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Top Crystal repositories on GitHub

Statically typed compiled language with Ruby-like ergonomics.

Ranked by stars across 149 Crystal repositories on GitHub. Refreshed daily.

  1. 1
    iv-org/invidious★ 24,477 · ⑂ 2,748

    Invidious is an alternative front-end to YouTube

    • invidious
    • watch
    • agplv3
    • youtube
    • video
    • youtube-video
  2. 2
    crystal-lang/crystal★ 20,412 · ⑂ 1,702

    The Crystal Programming Language

    • crystal
    • hacktoberfest
    • compiler
    • crystal-language
    • programming-language
  3. 3
    mint-lang/mint★ 4,266 · ⑂ 153

    🍃 A refreshing programming language for the front-end web.

    • mint-lang
    • language
    • compiler
    • programming-language
    • compile-to-js
    • crystal
  4. 4
    kemalcr/kemal★ 3,917 · ⑂ 205

    Fast, Effective, Simple Web Framework

    • crystal
    • kemal
    • web-framework
    • websocket
    • api
    • fast
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  6. 5
    vitobotta/hetzner-k3s★ 3,679 · ⑂ 233

    The easiest and fastest way to create production-ready Kubernetes clusters on Hetzner Cloud

    • kubernetes
    • k8s
    • devops
    • hetzner
    • hetzner-cloud
    • hetzner-api
  7. 6
    veelenga/awesome-crystal★ 3,561 · ⑂ 328

    :gem: A collection of awesome Crystal libraries, tools, frameworks and software

    • awesome
    • crystal
    • shards
    • list
    • awesome-list
  8. 7
    luckyframework/lucky★ 2,727 · ⑂ 172

    A full-featured Crystal web framework that catches bugs for you, runs incredibly fast, and helps you write code that lasts.

    • crystal
    • web
    • web-framework
    • lucky-framework
    • hacktoberfest
  9. 8
    amberframework/amber★ 2,604 · ⑂ 206

    A Crystal web framework that makes building applications fast, simple, and enjoyable. Get started with quick prototyping, less bugs, and blazing fast performance.

    • crystal
    • web
    • cohesive
    • efficient
    • fast
    • framework
  10. 9
    getmango/Mango★ 1,777 · ⑂ 128

    Mango is a self-hosted manga server and web reader

    • manga-reader
    • self-hosted
    • manga
    • manga-server
    • crystal-lang
    • web-application
  11. 10
    hendisantika/List-All-Programming-Telegram-Group★ 1,487 · ⑂ 362

    List of All Programming Telegram Group

    • telegram-group
    • programming-language
    • kotlin
    • android
    • java
    • user
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  13. 11
    Morantron/tmux-fingers★ 1,472 · ⑂ 75

    copy pasting in terminal with vimium/vimperator like hints.

    • tmux
    • tmux-plugins
    • vimium
    • vimperator
    • hint
    • productivity
  14. 12
    owasp-noir/noir★ 1,429 · ⑂ 151

    Hunt every Endpoint in your code, expose Shadow APIs, map the Attack Surface.

    • attack-surfaces
    • pentesting
    • security
    • devsecops
    • hacktoberfest
    • owasp
  15. 13
    ffwff/lilith★ 1,172 · ⑂ 27

    x86-64 os made in crystal

    • crystal
    • operating-system
  16. 14
    phil294/AHK_X11★ 1,024 · ⑂ 28

    AutoHotkey for Linux (X11-based systems)

  17. 15
    cloudamqp/lavinmq★ 1,014 · ⑂ 62

    Ultra quick message queue and streaming server

    • message-queue
    • server
    • amqp
    • background-jobs
    • job-queue
    • message-broker
  18. 16
    oprypin/nightly.link★ 1,006 · ⑂ 41

    Downloads the latest "nightly" build/artifact from a continuous testing workflow

    • github
    • github-actions
    • continuous-delivery
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  20. 17
    crystal-lang/shards★ 796 · ⑂ 111

    Dependency manager for the Crystal language

  21. 18
    hugopl/sidekiq.cr★ 780 · ⑂ 74

    Simple, efficient job processing for Crystal

  22. 19
    amethyst-framework/amethyst★ 650 · ⑂ 42

    Amethyst is a Rails inspired web-framework for Crystal language

    • crystal
    • middleware
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Find Crystal engineers and maintainers

The list above ranks the most-starred public Crystal repositories, drawn from the public GitHub graph. Across 149 Crystal repositories in the public graph, the maintainers, top contributors, and recurring committers are a powerful signal for where Crystal expertise lives.

Behind every popular Crystal project is a small group of people who actually shipped it. They’re the Crystal engineers, library authors, and infrastructure builders worth knowing - whether you’re hiring, partnering, or doing technical research.

Refolk turns this list into a search. Ask for “Crystal maintainers hiring”, “contributors to Crystal repos based in Europe”, or “companies whose engineers ship Crystal” and Refolk returns a ranked shortlist with the commits, repos, and profiles that earned each person a spot.

How this list is built

Refolk searched GitHub for public repositories whose primary language is Crystal, ranked them by stargazer count, and kept those with at least 100 stars. The list refreshes once a day.

Last refreshed: Fri, 18 Sep 2026 07:59:28 GMT

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Top repositories in other languages

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Common questions

How are these repositories ranked?

By stars, with forks and recent activity as tiebreakers, read from the public GitHub API. The methodology section above has the details.

How fresh is the data?

The ranking re-renders at least daily. Last refreshed: Fri, 18 Sep 2026 07:59:28 GMT.

Can I find the maintainers and contributors behind these repos?

Yes. Stars rank the projects; I can rank the engineers - maintainers, top contributors, and the people they work with. You start with 500 free credits, no card required.

Can I use this list for hiring?

That's the point. I read hiring signals across GitHub, LinkedIn, and the open web, so a repo list turns into a shortlist of engineers worth talking to.

Try it on the search you came here for

Stop building boolean strings. Just describe the person.

Type one sentence. I plan the search, read GitHub, public LinkedIn and Crunchbase records, and the open web as it is right now, and hand back a ranked list with the reason next to every name.

  1. 01Describe them

    One plain sentence. Role, city, stack, stage, whatever matters to you.

  2. 02I read the web live

    GitHub, public LinkedIn and Crunchbase records, the open web. Not a database that went stale last quarter.

  3. 03You read the shortlist

    Ranked, with the reasoning under every name. Open a profile, ask a follow-up, narrow it down.

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