# Refolk

> Refolk is a people search engine. Ask in plain English and get the right people, every time, across GitHub, LinkedIn, and the open web.

Ask for people the way you'd ask a colleague ("staff engineers in Berlin who maintain popular Rust crates") and I'll return a ranked list of real people with the evidence behind each match. Results draw on public GitHub activity, public LinkedIn and Crunchbase records, and the open web.

Key entry points: the landing page has a live demo, and every published search below is a real query with its full result list.

## Product
- [Refolk - find anyone, just ask](https://www.refolk.ai/): Landing page with a live search demo.
- [How Refolk works](https://www.refolk.ai/how-it-works): The full pipeline: query planning, live reads of public sources, and ranking with the evidence shown.
- [What is a people search engine?](https://www.refolk.ai/what-is-people-search): Plain-English guide to people search engines: what they are, how they work, and how AI changed them.
- [Docs](https://www.refolk.ai/docs): Canonical answers about the product: what it is, how search works, data sources, credits, privacy.
- [Published searches](https://www.refolk.ai/s): Real searches people ran, published with their full results.
- [Blog](https://www.refolk.ai/blog): Guides on sourcing, recruiting, and people search.
- [Open-source repositories](https://www.refolk.ai/repos): Trending and notable GitHub repositories, browsable by language and topic.
- [Company lists](https://www.refolk.ai/companies): Curated startup and company lists by industry, location, funding stage, and investor.

## Docs
- [What is Refolk?](https://www.refolk.ai/docs/what-is-refolk): Refolk is an AI sourcing agent: a people search engine you talk to in plain English. What it finds, who it's for, and how it differs from filter-based search.
- [How search works](https://www.refolk.ai/docs/how-search-works): What happens between typing one sentence and getting a ranked shortlist: planning, live source reading, cross-referencing, and per-result reasoning.
- [Where the data comes from](https://www.refolk.ai/docs/data-sources): The public sources behind every result: public GitHub activity, public LinkedIn and Crunchbase records, and live web search. Read at search time, not from a stale export.
- [Published searches](https://www.refolk.ai/docs/published-searches): Real searches users chose to share, published with their full prompt and results. How publishing and unpublishing work.
- [Company and repository lists](https://www.refolk.ai/docs/company-and-repo-lists): How the browsable company lists (by industry, city, stage, investor) and GitHub repository lists (by language, topic) are built and kept fresh.
- [Credits and pricing](https://www.refolk.ai/docs/credits-and-pricing): How credits are priced per search, what the free tier includes, and why an account can never be overdrafted.
- [Privacy and data removal](https://www.refolk.ai/docs/privacy-and-data-removal): What Refolk stores about accounts, how results about third parties are handled, and how to request removal or account deletion.

## Blog posts
- [Cisco's WARN Names 471. The 56 Engineers Have a 72-Hour Window.](https://www.refolk.ai/blog/cisco-warn-471-bay-area-engineers-july-13-2026): Cisco's California WARN filing cut 471 Bay Area workers on July 13, 2026, including 56 software engineers. Here's how to source them before Arista does.
- [Meta's ADO Will Bleed 1,900 Engineers by December. No WARN, No List.](https://www.refolk.ai/blog/meta-ado-gulag-1900-engineers-sourcing): Meta's Agent Data Optimization unit is forecast to shrink 30% by year-end without a layoff filing. Here's how to build the shortlist first.
- [Chamath's 8090 Needs 300 Hybrid Engineers. LinkedIn's "COBOL" Filter Won't Find Them.](https://www.refolk.ai/blog/8090-labs-cobol-ai-hybrid-engineer-sourcing): 8090 Labs raised $135M to translate 18M lines of COBOL into plain English. The engineer they actually need doesn't show up under any keyword filter.
- [Norm AI Just Hit $1.2B. The Global Legal Engineer Pool Is 198.](https://www.refolk.ai/blog/norm-ai-legal-engineer-sourcing-shortlist): Norm AI's July 7 unicorn round proves Legal Engineering as a category. Here's how to source the 198-person global pool before Harvey and Legora do.
- [Fluidstack's 197 Open Roles Map Anthropic's $50B Gigawatt Buildout](https://www.refolk.ai/blog/fluidstack-anthropic-50b-gigawatt-sourcing-map): Fluidstack doubled open roles to 197 in two months to deliver Anthropic's $50B gigawatt buildout. Here is the four-city sourcing map recruiters need.
- [Oracle's 10-K Just Dumped 8,000 Cerner Engineers Into Kansas City](https://www.refolk.ai/blog/oracle-health-cerner-kansas-city-layoffs-sourcing): Oracle Health's 8,000 to 10,000 Cerner layoffs are concentrated in Kansas City. Here is where EHR, HL7, and FHIR engineers actually live now.
- [Anthropic's $460K PM Band Is the Floor. The US Shortlist Is 12.](https://www.refolk.ai/blog/anthropic-claude-code-pm-460k-sourcing-playbook): Anthropic's Claude Code PM bands hit $305K to $460K base. The engineer-fluent PM pool is tiny. Here's the 2026 sourcing playbook before comp resets.
- [Even Realities Grew From 35 to 400. LINDBERG Is the Sourcing Lane You're Missing.](https://www.refolk.ai/blog/even-realities-unicorn-shenzhen-smart-glasses-sourcing): Even Realities hit a $1B valuation on July 6, 2026. Here's how to map its ex-Apple, LINDBERG, and Shenzhen optics bench for AI wearable roles.
- [1,200 Amazon Engineers Just Signed a Public Flight-Risk List](https://www.refolk.ai/blog/amazon-aecj-1200-engineers-sourcing-shortlist): The AECJ open letter and June 3 Seattle City Council testimony turned 1,200+ Amazon engineers into a self-declared sourcing shortlist. Move now.
- [TwelveLabs Tripled to 178. The Marengo Research Org Lives in Seoul.](https://www.refolk.ai/blog/twelvelabs-series-b-seoul-video-ai-talent): TwelveLabs closed a $100M Series B on July 1. The video-AI talent pool is in Seoul, not SF, and US-centric LinkedIn searches miss it entirely.
- [Ollama Just Raised $65M With 14 People. The llama.cpp Contributor Graph Is the Map.](https://www.refolk.ai/blog/ollama-series-b-docker-alumni-llama-cpp-sourcing-map): Ollama's $65M Series B funds a hiring sprint from 14 people. Here's the Docker alumni, llama.cpp, and vLLM sourcing map recruiters should build now.
- [Bungie's 292 WARN Hides 400. Tiger Engine's Netcode Is the Real Prize.](https://www.refolk.ai/blog/bungie-292-warn-tiger-engine-netcode-sourcing): Bungie's July 9, 2026 Bellevue WARN released the deepest live-service netcode bench in a decade. Here's the sourcing playbook, by title and surface.
- [Prime Intellect's 21 Angels Are a $1.25M-Per-Head Poach Map](https://www.refolk.ai/blog/prime-intellect-series-a-21-angels-sourcing-map): Prime Intellect's July 8 Series A named 21 operator-angels. Here is how to read that list as a sourcing map for RL, inference, and agent-infra talent.
- [SambaNova Just Doubled to $11B. The 77 It Cut in April 2025 Are the Prize.](https://www.refolk.ai/blog/sambanova-series-f-alumni-sourcing-playbook): SambaNova raised $1B on July 8 at $11B. The real sourcing list is the ~77 alumni cut in the 2025 training pivot, not the 397 still there.
- [Together AI's $800M Series C Needs 194 People. LinkedIn Shows 13.](https://www.refolk.ai/blog/together-ai-series-c-cuda-kernel-engineers-sourcing): Together AI raised $800M to grow GPU capacity 50x. The CUDA kernel engineers it needs live in vLLM and SGLang commits, not LinkedIn titles.
- [Cargo Robotics Emerged July 7 With an LOI for Hundreds of Units. Skip Tesla.](https://www.refolk.ai/blog/cargo-robotics-stealth-physical-ai-sourcing-map): Cargo Robotics revealed its stealth team on HN July 7, 2026. The 10 alma maters are a physical AI sourcing map, and the arbitrage isn't Tesla.
- [Warsh Put Xbox's Layoff Architect on the Fed. Source 1,600 Before June 30.](https://www.refolk.ai/blog/xbox-layoffs-fed-task-force-sourcing-timeline-2027): Asha Sharma cut 3,200 Xbox roles, then joined the Fed's AI jobs task force. Here is the sourcing timeline through FY27 for ZeniMax, id, and Obsidian talent.
- [Lucid Shed 1,819 in 2026. The Newark WARN Names Your Shortlist.](https://www.refolk.ai/blog/lucid-motors-layoffs-2026-newark-engineers): Lucid's two 2026 layoff rounds released ~1,819 engineers, including 319 in Newark. Here's how to source the ADAS, perception, and functional-safety talent.
- [Bespoke Labs Raised $40M on July 6. The RL Environment Shortlist Fits on One Page.](https://www.refolk.ai/blog/bespoke-labs-40m-rl-environment-engineers-sourcing): Bespoke Labs, Trase, and Sail Research raised $227M in two weeks for RL environments. Here is the sourcing map for a talent pool small enough to name.
- [The July 2026 MCP Audit: 2 ATS Vendors Shipped Real Servers. Source Both.](https://www.refolk.ai/blog/mcp-recruiting-tools-ashby-100hires-sourcing): A July 2026 audit found only Ashby and 100Hires ship first-party recruiter MCP servers. Here is how to source the tiny pool of engineers who built them.
- [Cognition's SWE-1.7 Named 4 Datacenters. That's Your RL Infra Shortlist.](https://www.refolk.ai/blog/cognition-swe-1-7-rl-infra-sourcing-map): Cognition's July 8 SWE-1.7 launch disclosed a globally distributed RL pipeline. Here's how to reverse-engineer the sourcing map before December vesting cliffs close it.
- [Ashby's July HN Post Quietly Killed the Junior Sourcing Pipeline](https://www.refolk.ai/blog/ashby-hn-july-2026-senior-only-sourcing): Ashby says 80%+ of its engineers are Senior-Staff+. The July 2026 HN thread proves it's the whole market now. Here's how to source for it.
- [Groupon's COO Walked With No Severance. Project Foundry's 400 Cuts Start Today.](https://www.refolk.ai/blog/groupon-project-foundry-400-cuts-sourcing-window): Groupon's COO exit today opens Project Foundry's 12-week engineering layoff window. Here's how to source the 400-role cut through Q3 2026.
- [Cloudflare Fired 1,100 Measurers. The 586 Engineers Aren't the Prize.](https://www.refolk.ai/blog/cloudflare-586-engineers-1100-measurers-sourcing): Cloudflare's May 2026 restructuring added ~586 engineers and displaced 1,100 measurers with paid runway through year-end. Here's the real sourcing list.
- [Sonos Just Released 82 Years of Design Tenure. Source Boston First.](https://www.refolk.ai/blog/sonos-design-ux-research-layoffs-2026-sourcing): Sonos cut its VP of Design, UX research lead, and hardware PM in a single week. Here is how to source the 10-to-15-year veterans now on the market.
- [Coinbase's Mux Has 197 Power Users. That's Your 2026 Shortlist.](https://www.refolk.ai/blog/coinbase-mux-power-users-shortlist): Coinbase's Mux power users ship 3.5x more PRs than baseline. Here's how to find their equivalents at Stripe, Block, and every AI-native company.
- [LinkedIn's Hiring Assistant Just Hit $450M ARR. 74% of Engineers Are Still Invisible to It.](https://www.refolk.ai/blog/linkedin-hiring-assistant-450m-arr-github-blind-spot): LinkedIn's Hiring Assistant cleared $450M ARR, but it can't see GitHub, HN, or 74% of passive engineers. Here's how to adjust your sourcing stack.
- [Microsoft's July 6 Cuts Freed 3,200 MCAPS Sellers. None Say "Engineer"](https://www.refolk.ai/blog/microsoft-july-2026-mcaps-layoffs-sourcing): Microsoft laid off 3,200 sales and consulting staff on July 6, 2026. Boolean strings miss them. Here is how to source the MCAPS cohort before Deloitte does.
- [Nvidia Took Ross. Groq Kept the Cloud. Source Both Sides of the $20B Split.](https://www.refolk.ai/blog/groq-nvidia-650m-lpu-talent-sourcing): Nvidia acquihired Groq's founder in December. Six months later Groq raised $650M. Here's how to source the two talent pools the split created.
- [DuckBill Gets 1,000 Applications a Day. Two Are Real. Source the Rest.](https://www.refolk.ai/blog/inbound-recruiting-dead-2026-pragmatic-engineer): Pragmatic Engineer's July 8 survey of 50+ hiring managers confirms inbound recruiting collapsed in H1 2026. Here's the outbound playbook per profile.

## Companies by industry
- [AI companies](https://www.refolk.ai/companies/ai): Companies building AI products, foundation models, and applied ML platforms.
- [SaaS companies](https://www.refolk.ai/companies/saas): Software-as-a-service vendors selling subscription cloud software to other businesses.
- [Fintech companies](https://www.refolk.ai/companies/fintech): Companies modernising banking, payments, lending, and financial infrastructure.
- [Developer tools companies](https://www.refolk.ai/companies/developer-tools): IDEs, runtimes, frameworks, and platforms built primarily for engineers.
- [Cybersecurity companies](https://www.refolk.ai/companies/cybersecurity): Companies defending or attacking software, networks, and cloud infrastructure.
- [Data infrastructure companies](https://www.refolk.ai/companies/data-infrastructure): Databases, warehouses, lakes, pipelines, and observability for production data.
- [Biotech companies](https://www.refolk.ai/companies/biotech): Companies applying biology, chemistry, and computation to therapeutics and tooling.
- [Healthtech companies](https://www.refolk.ai/companies/healthtech): Companies building software and devices for clinicians, patients, and payers.
- [Edtech companies](https://www.refolk.ai/companies/edtech): Companies building tools and platforms for K-12, higher-ed, and lifelong learners.
- [Robotics companies](https://www.refolk.ai/companies/robotics): Companies designing autonomous machines, manipulators, and the software that runs them.
- [Climate tech companies](https://www.refolk.ai/companies/climate-tech): Companies decarbonising power, transport, agriculture, and industry.
- [Gaming companies](https://www.refolk.ai/companies/gaming): Studios, engines, tooling, and platforms across console, PC, mobile, and web.
- [Ecommerce companies](https://www.refolk.ai/companies/ecommerce): Marketplaces, brands, and infrastructure for selling online.
- [Media companies](https://www.refolk.ai/companies/media): Companies producing or distributing news, video, audio, and creator tooling.
- [Logistics companies](https://www.refolk.ai/companies/logistics): Companies moving goods through warehouses, fleets, ports, and last-mile networks.
- [Real estate tech companies](https://www.refolk.ai/companies/real-estate-tech): Software, marketplaces, and finance for residential and commercial real estate.
- [Marketing tech companies](https://www.refolk.ai/companies/marketing-tech): Tools for marketers: CRM, attribution, content, ads, growth, and analytics.
- [HR tech companies](https://www.refolk.ai/companies/hr-tech): Software and services for hiring, payroll, performance, and workforce planning.
- [Legal tech companies](https://www.refolk.ai/companies/legal-tech): Companies building software and AI for law firms, in-house teams, and courts.
- [Consumer apps companies](https://www.refolk.ai/companies/consumer-apps): Direct-to-consumer mobile and web apps across social, productivity, and lifestyle.
- [Blockchain companies](https://www.refolk.ai/companies/blockchain): Companies building L1s, L2s, wallets, infra, and apps on public blockchains.
- [Hardware companies](https://www.refolk.ai/companies/hardware): Chips, devices, and physical products designed by venture-backed teams.

## Companies by location
- [Companies in San Francisco](https://www.refolk.ai/companies/in/san-francisco): The world's largest concentration of venture-backed software and AI companies.
- [Companies in New York](https://www.refolk.ai/companies/in/new-york): Home to fintech, media, healthtech, and a fast-growing AI scene.
- [Companies in Los Angeles](https://www.refolk.ai/companies/in/los-angeles): Media, gaming, consumer tech, and a fast-growing aerospace cluster.
- [Companies in Seattle](https://www.refolk.ai/companies/in/seattle): Cloud, ecommerce, gaming, and biotech anchored by Amazon and Microsoft.
- [Companies in Boston](https://www.refolk.ai/companies/in/boston): Biotech, robotics, and enterprise software clustered around MIT and Harvard.
- [Companies in Austin](https://www.refolk.ai/companies/in/austin): A fast-growing hub for software, semiconductors, and crypto.
- [Companies in Chicago](https://www.refolk.ai/companies/in/chicago): Logistics, fintech, and a sizable enterprise SaaS ecosystem.
- [Companies in Miami](https://www.refolk.ai/companies/in/miami): Crypto, fintech, and consumer tech with a strong Latin-American bridge.
- [Companies in Denver](https://www.refolk.ai/companies/in/denver): Aerospace, climate tech, and a growing software ecosystem.
- [Companies in London](https://www.refolk.ai/companies/in/london): Europe's largest fintech and AI hub by capital deployed and exits.
- [Companies in Berlin](https://www.refolk.ai/companies/in/berlin): A magnet for European startups across SaaS, climate tech, and consumer.
- [Companies in Paris](https://www.refolk.ai/companies/in/paris): France's centre of gravity for AI, deeptech, and luxury commerce.
- [Companies in Amsterdam](https://www.refolk.ai/companies/in/amsterdam): Fintech, ecommerce, and developer tools from Booking to Adyen.
- [Companies in Stockholm](https://www.refolk.ai/companies/in/stockholm): Sweden's tech capital - gaming, fintech, music, and climate tech.
- [Companies in Dublin](https://www.refolk.ai/companies/in/dublin): EMEA HQ city for major US tech firms and a growing native ecosystem.
- [Companies in Zurich](https://www.refolk.ai/companies/in/zurich): AI research, robotics, and enterprise software anchored by ETH.
- [Companies in Toronto](https://www.refolk.ai/companies/in/toronto): Canada's largest tech hub and a major AI research centre.
- [Companies in Vancouver](https://www.refolk.ai/companies/in/vancouver): Gaming, climate tech, and a sizable engineering talent pool.
- [Companies in Tel Aviv](https://www.refolk.ai/companies/in/tel-aviv): Israel's startup capital - cybersecurity, defence tech, and AI.
- [Companies in Singapore](https://www.refolk.ai/companies/in/singapore): Southeast Asia's HQ city for fintech, logistics, and Web3.
- [Companies in Tokyo](https://www.refolk.ai/companies/in/tokyo): Robotics, gaming, and enterprise software at scale.
- [Companies in Bangalore](https://www.refolk.ai/companies/in/bangalore): India's tech capital and a major hub for global engineering teams.
- [Companies in Sydney](https://www.refolk.ai/companies/in/sydney): Australia's largest tech hub across SaaS, fintech, and consumer.
- [Companies in São Paulo](https://www.refolk.ai/companies/in/sao-paulo): Latin America's largest tech ecosystem, anchored by fintech.
- [Companies in the United States](https://www.refolk.ai/companies/in/usa): The largest startup ecosystem on the planet by capital and exits.
- [Companies in the United Kingdom](https://www.refolk.ai/companies/in/uk): Europe's biggest tech market, with London the centre of gravity.
- [Companies in Germany](https://www.refolk.ai/companies/in/germany): Europe's industrial powerhouse turning out climate, mobility, and B2B SaaS firms.
- [Companies in France](https://www.refolk.ai/companies/in/france): Strong in AI, deeptech, and luxury - and the home of La French Tech.
- [Companies in the Netherlands](https://www.refolk.ai/companies/in/netherlands): Dense ecosystem of fintech, ecommerce, and developer-tool companies.
- [Companies in Sweden](https://www.refolk.ai/companies/in/sweden): Outsized share of unicorns per capita - gaming, fintech, music, climate.
- [Companies in Canada](https://www.refolk.ai/companies/in/canada): Major AI research hubs in Toronto and Montreal, plus growing SaaS.
- [Companies in Israel](https://www.refolk.ai/companies/in/israel): World leader in cybersecurity and one of the most active startup ecosystems.
- [Companies in India](https://www.refolk.ai/companies/in/india): Huge engineering base and rapidly maturing native startup ecosystem.
- [Companies in Singapore](https://www.refolk.ai/companies/in/singapore-country): Southeast Asia's capital-markets and HQ centre.
- [Companies in Australia](https://www.refolk.ai/companies/in/australia): Sydney and Melbourne anchor a SaaS-heavy startup ecosystem.
- [Companies in Japan](https://www.refolk.ai/companies/in/japan): Robotics, gaming, and a slowly opening enterprise software market.
- [Companies in Brazil](https://www.refolk.ai/companies/in/brazil): The largest tech market in Latin America, anchored by fintech.
- [Companies in Ireland](https://www.refolk.ai/companies/in/ireland): EMEA HQ for many US tech giants and a growing native ecosystem.
- [Companies in Switzerland](https://www.refolk.ai/companies/in/switzerland): Deeptech research, robotics, and enterprise software from ETH and EPFL.

## Companies by funding stage
- [Pre-seed companies](https://www.refolk.ai/companies/series/pre-seed): Companies that have raised friends-and-family or pre-seed capital.
- [Seed companies](https://www.refolk.ai/companies/series/seed): Companies on their seed round, typically the first priced equity raise.
- [Series A companies](https://www.refolk.ai/companies/series/series-a): Companies that have closed a Series A - product-market fit confirmed and scaling.
- [Series B companies](https://www.refolk.ai/companies/series/series-b): Companies that have closed a Series B - proven scaling motion, hiring aggressively.
- [Series C companies](https://www.refolk.ai/companies/series/series-c): Companies that have closed a Series C - growth-stage with significant revenue.
- [Series D companies](https://www.refolk.ai/companies/series/series-d): Late-stage venture: Series D companies often eyeing IPO or large strategic exits.
- [Late-stage venture companies](https://www.refolk.ai/companies/series/late-stage): Series E and beyond - pre-IPO scaleups with hundreds of employees and meaningful revenue.
- [Private equity companies](https://www.refolk.ai/companies/series/private-equity): Companies that have taken private-equity capital or large secondaries.
- [IPO companies](https://www.refolk.ai/companies/series/ipo): Public companies and recent post-IPO follow-on raises.
- [Angel-funded companies](https://www.refolk.ai/companies/series/angel): Companies whose latest disclosed round is an angel investment.
- [Convertible-note companies](https://www.refolk.ai/companies/series/convertible): Companies on convertible notes or debt-style financings.
- [Grant-funded companies](https://www.refolk.ai/companies/series/grant): Companies whose latest disclosed funding is grant or non-dilutive support.

## Companies by investor
- [Companies backed by Y Combinator](https://www.refolk.ai/companies/funded-by/y-combinator): The most prolific seed accelerator in the world, batch class twice a year.
- [Companies backed by Andreessen Horowitz](https://www.refolk.ai/companies/funded-by/a16z): Multi-stage venture firm investing across consumer, enterprise, fintech, and crypto.
- [Companies backed by Sequoia Capital](https://www.refolk.ai/companies/funded-by/sequoia): Storied venture firm backing seed through pre-IPO across software and infrastructure.
- [Companies backed by Accel](https://www.refolk.ai/companies/funded-by/accel): Global venture firm with a strong record in enterprise SaaS, security, and infra.
- [Companies backed by Benchmark](https://www.refolk.ai/companies/funded-by/benchmark): Concentrated, partner-led venture firm focused on Series A consumer and enterprise.
- [Companies backed by Founders Fund](https://www.refolk.ai/companies/funded-by/founders-fund): Contrarian venture firm investing in deeptech, defence, and breakthrough software.
- [Companies backed by Lightspeed Venture Partners](https://www.refolk.ai/companies/funded-by/lightspeed): Multi-stage venture firm with deep practices in enterprise, consumer, and fintech.
- [Companies backed by Kleiner Perkins](https://www.refolk.ai/companies/funded-by/kleiner-perkins): Sand Hill Road institution backing software, climate, and biotech.
- [Companies backed by Greylock](https://www.refolk.ai/companies/funded-by/greylock): Early-stage venture firm with a strong enterprise and AI footprint.
- [Companies backed by Khosla Ventures](https://www.refolk.ai/companies/funded-by/khosla-ventures): Vinod Khosla's firm - deeptech, climate, healthcare, and contrarian software bets.
- [Companies backed by General Catalyst](https://www.refolk.ai/companies/funded-by/general-catalyst): Multi-stage firm with a thesis-driven approach across software and healthcare.
- [Companies backed by Thrive Capital](https://www.refolk.ai/companies/funded-by/thrive-capital): Joshua Kushner's firm investing across consumer, fintech, and enterprise software.
- [Companies backed by Index Ventures](https://www.refolk.ai/companies/funded-by/index-ventures): Transatlantic venture firm with a deep bench of enterprise SaaS and fintech bets.
- [Companies backed by ICONIQ](https://www.refolk.ai/companies/funded-by/iconiq): Growth-stage firm combining venture, growth equity, and family-office capital.
- [Companies backed by Tiger Global](https://www.refolk.ai/companies/funded-by/tiger-global): Crossover firm that became one of the most prolific late-stage venture investors.
- [Companies backed by Bessemer Venture Partners](https://www.refolk.ai/companies/funded-by/bessemer): Long-running venture firm with a defining record in cloud and SaaS.
- [Companies backed by Battery Ventures](https://www.refolk.ai/companies/funded-by/battery-ventures): Multi-stage firm investing across infrastructure, application, and industrial software.
- [Companies backed by Spark Capital](https://www.refolk.ai/companies/funded-by/spark-capital): Boston- and NYC-based firm with a strong consumer and creator-economy footprint.
- [Companies backed by First Round Capital](https://www.refolk.ai/companies/funded-by/first-round): Concentrated seed-stage firm with high-touch portfolio support.
- [Companies backed by Initialized Capital](https://www.refolk.ai/companies/funded-by/initialized): Garry Tan's firm focused on early-stage technical founders.
- [Companies backed by Soma Capital](https://www.refolk.ai/companies/funded-by/soma-capital): Founder-led seed-stage firm investing globally with a strong YC overlap.
- [Companies backed by Felicis](https://www.refolk.ai/companies/funded-by/felicis): Aydin Senkut's firm investing across software, healthcare, and consumer.
- [Companies backed by Redpoint Ventures](https://www.refolk.ai/companies/funded-by/redpoint): Multi-stage firm with strong enterprise SaaS and infrastructure presence.
- [Companies backed by Menlo Ventures](https://www.refolk.ai/companies/funded-by/menlo-ventures): Sand Hill venture firm investing in consumer, enterprise, and infra.
- [Companies backed by Coatue](https://www.refolk.ai/companies/funded-by/coatue): Crossover firm investing across late-stage venture and public technology.
- [Companies backed by Insight Partners](https://www.refolk.ai/companies/funded-by/insight-partners): Growth equity firm with an extensive software and ScaleUp practice.
- [Companies backed by GV (Google Ventures)](https://www.refolk.ai/companies/funded-by/google-ventures): Alphabet's venture arm investing across enterprise, consumer, life sciences, and AI.
- [Companies backed by NEA](https://www.refolk.ai/companies/funded-by/nea): One of the largest US venture firms, multi-stage across software and healthcare.
- [Companies backed by SV Angel](https://www.refolk.ai/companies/funded-by/sv-angel): Ron Conway's network - high-volume seed investments across consumer and enterprise.
- [Companies backed by Techstars](https://www.refolk.ai/companies/funded-by/techstars): Global accelerator with city-based programs and large alumni network.

## Repositories by language
- [Rust repositories](https://www.refolk.ai/repos/lang/rust): Memory-safe systems programming with zero-cost abstractions.
- [Go repositories](https://www.refolk.ai/repos/lang/go): Statically typed, compiled language designed for cloud-native services.
- [TypeScript repositories](https://www.refolk.ai/repos/lang/typescript): JavaScript with a static type system, the lingua franca of modern web apps.
- [Python repositories](https://www.refolk.ai/repos/lang/python): The default language of data science, machine learning, and automation.
- [JavaScript repositories](https://www.refolk.ai/repos/lang/javascript): The browser's native language, also widely used on the server via Node.js.
- [Java repositories](https://www.refolk.ai/repos/lang/java): Enterprise-grade JVM language behind much of the world's backend infrastructure.
- [Kotlin repositories](https://www.refolk.ai/repos/lang/kotlin): Modern JVM language, the preferred way to build for Android.
- [Swift repositories](https://www.refolk.ai/repos/lang/swift): Apple's primary language for iOS, macOS, and server-side applications.
- [C++ repositories](https://www.refolk.ai/repos/lang/cpp): High-performance systems language behind databases, browsers, and game engines.
- [C repositories](https://www.refolk.ai/repos/lang/c): The lingua franca of operating systems, compilers, and embedded devices.
- [C# repositories](https://www.refolk.ai/repos/lang/csharp): Microsoft's flagship .NET language for desktop, web, and game development.
- [Ruby repositories](https://www.refolk.ai/repos/lang/ruby): Developer-friendly dynamic language behind Rails and many indie web apps.
- [PHP repositories](https://www.refolk.ai/repos/lang/php): Powers a substantial fraction of the web, including WordPress and Laravel.
- [Elixir repositories](https://www.refolk.ai/repos/lang/elixir): Functional language on the Erlang VM, prized for fault tolerance and concurrency.
- [Erlang repositories](https://www.refolk.ai/repos/lang/erlang): Battle-tested language for distributed, fault-tolerant telecom systems.
- [Haskell repositories](https://www.refolk.ai/repos/lang/haskell): Pure functional language with a powerful type system.
- [OCaml repositories](https://www.refolk.ai/repos/lang/ocaml): Functional language behind compilers, formal methods, and quantitative finance.
- [Scala repositories](https://www.refolk.ai/repos/lang/scala): JVM language blending object-oriented and functional paradigms.
- [Clojure repositories](https://www.refolk.ai/repos/lang/clojure): Lisp on the JVM, popular for data-centric backend services.
- [Zig repositories](https://www.refolk.ai/repos/lang/zig): Modern systems language aimed at being a better C.
- [Nim repositories](https://www.refolk.ai/repos/lang/nim): Statically typed compiled language with Python-like syntax.
- [Crystal repositories](https://www.refolk.ai/repos/lang/crystal): Statically typed compiled language with Ruby-like ergonomics.
- [Dart repositories](https://www.refolk.ai/repos/lang/dart): Google's language behind Flutter, used for cross-platform apps.
- [Lua repositories](https://www.refolk.ai/repos/lang/lua): Lightweight embeddable scripting language used in games and Neovim.
- [Julia repositories](https://www.refolk.ai/repos/lang/julia): High-performance language for scientific computing and numerical work.
- [R repositories](https://www.refolk.ai/repos/lang/r): Statistical computing language widely used in academia and analytics.
- [Solidity repositories](https://www.refolk.ai/repos/lang/solidity): Smart contract language for the Ethereum Virtual Machine.
- [Shell repositories](https://www.refolk.ai/repos/lang/shell): POSIX shell scripts powering CLIs, dotfiles, and DevOps tooling.
- [Gleam repositories](https://www.refolk.ai/repos/lang/gleam): Type-safe functional language on the BEAM virtual machine.
- [Mojo repositories](https://www.refolk.ai/repos/lang/mojo): Python-superset systems language built for AI workloads.

## Repositories by topic
- [LLM repositories](https://www.refolk.ai/repos/topic/llm): Large language model frameworks, agents, runtimes, and inference servers.
- [AI agents repositories](https://www.refolk.ai/repos/topic/ai-agents): Autonomous and tool-using agent frameworks built around LLMs.
- [RAG repositories](https://www.refolk.ai/repos/topic/rag): Retrieval-augmented generation pipelines, embeddings, and grounding tooling.
- [Vector databases repositories](https://www.refolk.ai/repos/topic/vector-database): Embedding stores and approximate nearest-neighbour search engines.
- [Embeddings repositories](https://www.refolk.ai/repos/topic/embeddings): Models, libraries, and infrastructure for vector representations of text and media.
- [Transformers repositories](https://www.refolk.ai/repos/topic/transformers): Transformer model implementations, training kits, and finetuning tooling.
- [Fine-tuning repositories](https://www.refolk.ai/repos/topic/fine-tuning): Recipes, frameworks, and tools for adapting foundation models.
- [Machine learning repositories](https://www.refolk.ai/repos/topic/machine-learning): Libraries, models, and end-to-end systems for traditional and modern ML.
- [Deep learning repositories](https://www.refolk.ai/repos/topic/deep-learning): Neural network frameworks, training utilities, and model zoos.
- [Computer vision repositories](https://www.refolk.ai/repos/topic/computer-vision): Image and video understanding: detection, segmentation, generation.
- [Natural language processing repositories](https://www.refolk.ai/repos/topic/nlp): Tokenizers, classical NLP, and modern language model tooling.
- [Speech recognition repositories](https://www.refolk.ai/repos/topic/speech-recognition): ASR models and pipelines for converting audio to text.
- [Text-to-speech repositories](https://www.refolk.ai/repos/topic/text-to-speech): TTS models and inference servers for generating natural speech.
- [Kubernetes repositories](https://www.refolk.ai/repos/topic/kubernetes): Operators, controllers, dashboards, and ecosystem tools for Kubernetes.
- [Docker repositories](https://www.refolk.ai/repos/topic/docker): Containers, images, and Docker-adjacent developer tooling.
- [DevOps repositories](https://www.refolk.ai/repos/topic/devops): CI/CD, infrastructure-as-code, observability, and platform engineering.
- [Terraform repositories](https://www.refolk.ai/repos/topic/terraform): Modules, providers, and tooling around HashiCorp Terraform.
- [Observability repositories](https://www.refolk.ai/repos/topic/observability): Tracing, metrics, logs, and debugging tools for production systems.
- [CLI repositories](https://www.refolk.ai/repos/topic/cli): Command-line tools, terminal UIs, and shell utilities.
- [Terminal UI repositories](https://www.refolk.ai/repos/topic/tui): Rich text-based UIs and TUI frameworks for the terminal.
- [Static site generators repositories](https://www.refolk.ai/repos/topic/static-site-generator): Tooling for generating static websites from content sources.
- [Web frameworks repositories](https://www.refolk.ai/repos/topic/web-framework): Server-side and full-stack web application frameworks.
- [GraphQL repositories](https://www.refolk.ai/repos/topic/graphql): GraphQL servers, clients, and developer tooling.
- [REST APIs repositories](https://www.refolk.ai/repos/topic/rest-api): REST API servers, generators, and client libraries.
- [Databases repositories](https://www.refolk.ai/repos/topic/database): Relational, document, key-value, and time-series storage engines.
- [PostgreSQL repositories](https://www.refolk.ai/repos/topic/postgresql): Extensions, drivers, and tooling for the Postgres ecosystem.
- [Blockchain repositories](https://www.refolk.ai/repos/topic/blockchain): Chains, smart contracts, wallets, and on-chain tooling.
- [Ethereum repositories](https://www.refolk.ai/repos/topic/ethereum): Smart contracts, clients, and developer tools for the Ethereum stack.
- [Game engines repositories](https://www.refolk.ai/repos/topic/game-engine): 2D and 3D game engines, runtimes, and authoring tools.
- [Game development repositories](https://www.refolk.ai/repos/topic/game-development): Engines, libraries, sample games, and tools for game makers.
- [Android repositories](https://www.refolk.ai/repos/topic/android): Android apps, libraries, and developer tooling.
- [iOS repositories](https://www.refolk.ai/repos/topic/ios): iOS apps, libraries, and developer tooling.
- [React repositories](https://www.refolk.ai/repos/topic/react): React libraries, hooks, component kits, and developer tools.
- [Next.js repositories](https://www.refolk.ai/repos/topic/nextjs): Next.js apps, starters, and ecosystem libraries.
- [Vue repositories](https://www.refolk.ai/repos/topic/vue): Vue.js component libraries, frameworks, and starters.
- [Svelte repositories](https://www.refolk.ai/repos/topic/svelte): Svelte and SvelteKit component kits, libraries, and apps.
- [Tailwind CSS repositories](https://www.refolk.ai/repos/topic/tailwindcss): Tailwind plugins, component libraries, and design systems.
- [Design systems repositories](https://www.refolk.ai/repos/topic/design-system): Tokens, component libraries, and tooling for cohesive UI.
- [Low-code repositories](https://www.refolk.ai/repos/topic/low-code): Builders and platforms for rapid app development.
- [Automation repositories](https://www.refolk.ai/repos/topic/automation): Workflow automation, RPA, and scripting frameworks.
- [Monitoring repositories](https://www.refolk.ai/repos/topic/monitoring): Tools for monitoring application health, infrastructure, and SLAs.
- [Security repositories](https://www.refolk.ai/repos/topic/security): Offensive and defensive security tools and libraries.
- [Cryptography repositories](https://www.refolk.ai/repos/topic/cryptography): Crypto primitives, protocols, and zero-knowledge tooling.
- [Compilers repositories](https://www.refolk.ai/repos/topic/compiler): Front-ends, back-ends, and language toolchains.
- [Operating systems repositories](https://www.refolk.ai/repos/topic/operating-system): Kernels, microkernels, and OS research projects.
- [Robotics repositories](https://www.refolk.ai/repos/topic/robotics): Control, perception, simulation, and ROS-ecosystem code.
- [Data science repositories](https://www.refolk.ai/repos/topic/data-science): Notebooks, analysis libraries, and data tooling.
- [Data engineering repositories](https://www.refolk.ai/repos/topic/data-engineering): Pipelines, orchestrators, and ELT/ETL tooling.
- [Self-hosted repositories](https://www.refolk.ai/repos/topic/self-hosted): Apps and services designed to be run on your own infrastructure.
- [Open source repositories](https://www.refolk.ai/repos/topic/open-source): Notable open-source projects across every category.

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## Optional
- [Sitemap](https://www.refolk.ai/sitemap.xml): Full URL inventory, including combined industry, stage, location, and investor pages.