Ruby Gems

Open-source Ruby projects categorized as Gems
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Top 13 Ruby Gem Projects

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  1. RubyGems

    The Ruby community's gem hosting service.

    Project mention: Contributing to RubyGems (.org) | dev.to | 2026-01-28

    I found https://github.com/rubygems/rubygems.org/issues/4294 from 2023. No one had fixed it, yet.

  2. Kargo

    Stop Scripting Promotions. Start Shipping with Kargo. Kargo automates promotion across dev, staging, and prod with approval gates and verification. Open source, built by the team behind Argo CD. Download now.

    Kargo logo

  3. Gem in a Box

    Really simple rubygem hosting

  4. gemstash

    A RubyGems.org cache and private gem server

  5. sport.db

    sport.db - open sports database (e.g. football.db, formula1.db etc.) command line tool and libraries

  6. blockchain

    blockchain (crypto) tools, libraries & scripts in ruby (by rubycocos)

  7. gemdiff

    Find source repositories for ruby gems. Open, compare, and update outdated gem versions

  8. ocran

    Turn ruby files into executables. pack into directories and zip files files on windows, macOS, Linux (supported safe fork of ocran)

  9. AppSignal

    AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.

    AppSignal logo

  10. jwl

    jewel likes gems

    Project mention: Jwl – A Build and Release Tool for Pure-Ruby Gems | news.ycombinator.com | 2026-02-01

  11. cocos

    cocos (code commons) - auto-include quick-starter prelude & prolog

  12. dsu

    dsu is little gem that helps manage your Agile DSU (Daily Stand Up) participation. How? by providing a simple command line interface (CLI) which allows you to create, read, update, and delete (CRUD) noteworthy activities that you performed during your day. During your DSU, you can then easily recall and share these these activities with your team.

    Project mention: Show HN: Dsu (daily stand-up gem) | news.ycombinator.com | 2025-10-15

    dsu is a ruby gem that enables anyone practicing Agile methodology to record, keep track of and manage their daily standup (DSU) activities. Give it a download and a GitHub star. Lots of fun to use - whether or not you hate daily stand-ups :)

    - dsu uses no network connections whatsoever. - dsu stores all of its data locally, in .json files. - dsu is a simple (but powerful) command-line tool for users who love to work within the terminal. - dsu versioning follows the semantic versioning standard (MAJOR.MINOR.PATCH).

    - View the wiki: https://github.com/gangelo/dsu/wiki

  13. git

    git (and github) & monorepo / mono source tree command line tools, libraries & scripts (by rubycocos)

  14. more

    more tools, libraries & scripts

  15. simple-icons-rails

    A gem to easily use SimpleIcons.org in your Rails application

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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Index

What are some of the best open-source Gem projects in Ruby? This list will help you:

# Project Stars
1 RubyGems 2,441
2 Gem in a Box 1,545
3 gemstash 792
4 sport.db 241
5 blockchain 238
6 gemdiff 124
7 ocran 104
8 jwl 67
9 cocos 53
10 dsu 49
11 git 19
12 more 4
13 simple-icons-rails 4

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