Y Combinator portfolio SaaS companies

The most prolific seed accelerator in the world, batch class twice a year. Filtered to companies in SaaS.

Edit the query above, or pick a refinement. 500 free credits on sign-up, no card needed.

Built from a search like: “Y Combinator-backed SaaS companies”

Ranked by current headcount across Y Combinator-backed SaaS companies. Refreshed daily.

1
DoorDash· San Francisco, California, United States
At DoorDash, our mission to empower local economies shapes how our team members move quickly and always learn and reiterate to support merchants, Dashers and the communities we serve. We are a technology and logistics company that started with door-to-door delivery, and we are looking for team members who can help us go from a company that is known for delivering food to a company that people turn to for any and all goods. DoorDash is growing rapidly and changing constantly, which gives our team members the opportunity to share their unique perspectives, solve new challenges, and own their careers. Our leaders seek the truth and welcome big, hairy, audacious questions. We are grounded in our company values, and we make intentional decisions that are both logical and display empathy for our range of users—from Dashers to Merchants to Customers.
- Post-IPO debt
- 82.4k employees
- Founded 2013
2
Airbnb· San Francisco, California, United States
Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays, experiences and services that make it possible for guests to connect with communities in a more authentic way.
- Post-IPO debt
- 72.2k employees
- Founded 2007
3
Instacart· San Francisco, California, United States
Instacart is a leading grocery technology company that partners with more than 2,200 retail banners – representing nearly 100,000 stores – to transform how people shop for the groceries they need from the retailers they trust, while creating flexible earning opportunities for shoppers. Through the Instacart Marketplace, Instacart Enterprise platform, and Instacart Ads ecosystem, the company powers ecommerce, fulfillment, in-store technology, AI offerings, and advertising for partners. With Instacart Health, the company is providing tools to increase nutrition security, make healthy choices easier for consumers, and expand the role that food can play in improving health outcomes. For more information, visit www.instacart.com/company.
- Private equity
- 25.2k employees
- Founded 2012
Live search
This list is a starting point
I can run a natural-language search across LinkedIn, GitHub, and the open web. Fire one of these, or edit the box up top to match exactly who you're after.
- Y Combinator SaaS companies hiringRun
- Y Combinator SaaS foundersRun
500 free credits on sign-up, no card needed.
4
Meesho· Bengaluru, Karnataka, India
Meesho is India’s e-commerce marketplace, on a mission to democratise internet commerce. Our multi-sided technology platform connects four key stakeholders — consumers, sellers, logistics partners, and content creators — to power inclusive growth at scale. We enable individuals and small businesses to sell online with ease, offering access to a wide customer base, integrated logistics, payment solutions, and platform support. For customers, Meesho offers a broad and affordable selection, tailored for diverse needs across Bharat. We also empower creators to build commerce-driven content that drives discovery and engagement.Our logistics operations are powered by Valmo, Meesho’s asset-light logistics platform that works entirely through partner-led infrastructure to ensure cost-efficient and scalable deliveries.
- post ipo secondary
- 24.3k employees
- Founded 2015
5
Zepto· Greater Kolkata Area
Founded in 2021 by Aadit Palicha and Kaivalya Vohra, Zepto is on a mission to save you time —making every second count towards life's real joys. Our platform has revolutionised rapid commerce in India with cutting-edge technology and strategically optimised delivery hubs. Zepto offers an extensive range of 45,000+ products, from fresh groceries to electronics, beauty essentials, apparels, toys and more, delivering across 50+ cities in minutes*Zepto Café extends our commitment to convenience, featuring a curated menu of over 200 fresh items.
- Series H
- 19k employees
- Founded 2021

6
Stripe· South San Francisco, California, United States
Stripe builds programmable financial services. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Headquartered in San Francisco and Dublin, the company aims to increase the GDP of the internet.
- Secondary
- 17k employees
- Founded 2010
7
Twitch· San Francisco, California, United States
Twitch is where thousands of communities come together for whatever, every day. Together for streamers. Together for games we love. Together for each other.
- Series C
- 14.9k employees
- Founded 2011
8
Café (YC S21)· New York, New York, United States
Café helps enterprises drive collaboration, engagement, and cohesion through real-world interactions.Employees can discover colleagues, coordinate in-person meetings, and manage internal events — all in one platform.By connecting teams across locations and departments, Café boosts productivity, knowledge sharing, and organizational alignment.Make your workforce more connected, engaged, and collaborative ☕️
- Pre-seed
- 13.7k employees
- Founded 2020
9
Carvana· Tempe, Arizona, United States
Carvana (NYSE: CVNA) is an industry pioneer for buying and selling used vehicles online. As the fastest growing used automotive retailer in U.S. history, its proven, customer-first ecommerce model has positively impacted millions of people's lives through convenient, accessible and transparent experiences.Carvana allows customers to browse a nationwide inventory and purchase a vehicle from the comfort of their home entirely online, benefiting from a 7-day money back guarantee, home delivery and more. Customers also have the option to sell or trade-in their vehicle online in seconds. Carvana brings a continued focus on people-first values, industry-leading customer care, technology and innovation, and is the No. 2 automotive brand in the U.S. on the Forbes 2022 Most Customer-Centric Companies List. Carvana is one of the four fastest companies to make the Fortune 500. For more information, please visit www.carvana.com and follow us on LinkedIn, @gocarvana on Instagram, @Carvana on X, and @gocarvana on TikTok.Carvana also encourages investors to visit its Investor Relations website as financial and other company information is posted.
- Post-IPO debt
- 8.3k employees
- Founded 2012
10
Rippling· San Francisco, California, United States
Rippling is a workforce management system that eliminates the friction from running a business. Today, most companies struggle with everything from routine tasks, like running payroll, to cross-functional planning, like aligning on headcount. That’s because all their data related to people, processes, and systems is scattered in a hundred places. Rippling has every application you need to run your business—from applicant tracking and payroll to IT and expenses—in one place. But unlike other systems, Rippling sits on top of a unified platform. Data flows dynamically between Rippling’s applications, giving every team a shared source of truth, the power to automate processes, and access to the insights they need. This allows your business to execute better, faster.Based in San Francisco, CA, Rippling has raised $1.2B from the world’s top investors—including Kleiner Perkins, Founders Fund, Sequoia, Greenoaks, and Bedrock.Get help: rippling.com/contactLicensing details: https://app.rippling.com/licensing
- Series G
- 7.8k employees
- Founded 2016

Reveal 1,914 more·500 free credits, no card

Y Combinator’s SaaS portfolio

The list above ranks Y Combinator-backed SaaS companies by current headcount, drawn from public LinkedIn and Crunchbase records. 1,919 matching companies in Refolk’s index give you a quick read on where Y Combinator has gone deepest in the SaaS space.

Y Combinator’s SaaS bets tend to share a thesis. The engineers, ML researchers, and founders inside these companies are often building the same primitives - and they show up in SaaS talent pools across the next decade.

Refolk converts this list into a live search. Ask for “Y Combinator SaaS companies hiring senior engineers” or “founders of Y Combinator-backed SaaS companies” and Refolk returns a fresh ranked shortlist.

How this list is built

Refolk pulled SaaS companies whose disclosed Crunchbase investor list includes Y Combinator, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 11:04:21 GMT

Need a more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

Related lists

See all company lists.

Or zoom out

Common questions

How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

How fresh is the data?

The underlying index updates continuously and this page re-renders at least daily. Last refreshed: Wed, 05 Aug 2026 11:04:21 GMT.

Can I get the full list of 1,919 companies?

Yes. This page shows the top of the ranking; sign up and I'll run the search live for the complete, current list. You start with 500 free credits, no card required.

Can I find the people inside these companies?

Yes. Ask in plain English - for example "engineering leaders at these companies who joined in the last year" - and I return the specific people, with context on each.

This list is a starting point