Hand-picked for you by me, and made popular by someone else.
Open source IFTTT
Track your finances and plan your future.
next-generation discussion platform
The modern, open source, self-hosted customer support platform. An alternative to Intercom and Zendesk
self hosted Git management
A fully featured open source mail delivery platform for incoming & outgoing e-mail
a flexible e-commerce platform
community-run, distributed social-network
OpenProject is the leading open source project management software.
project management system
Dawarich: Your Self-Hosted Location History Tracker
Solidus, the open-source eCommerce framework.
Zammad is a web based open source helpdesk/customer support system
Octobox helps you manage your GitHub notifications efficiently so you can spend less time managing and more time getting things done
link-aggregation site, inspired by Hacker News
open source, self-hosted error catcher
Main website for "The Odin Project"
a modular and extendable CMS
a clean, customizable CRM
roll your own crowdfunding
web based team chat
web based project management
make decisions together
Marketplace platform
crowd-sourced map of the world
The Ruby community's gem hosting service
a multisite CMS with liquid templating
Your code, always in style.
Transactional email server with a lovely web interface
a pluggable forum
The Organization for Transformative Works (OTW) - Archive Of Our Own (AO3) Project
agile project planning, clone of Pivotal Tracker
Web interface for deployments
simple markdown-powered blog platform
Automate, optimize, and control your cloud and virtualization services
Monitor performance of your Rails applications (self-hosted and free)
Time registration that doesn't suck.
exception reporting and bug analysis by Square
A learning management system (LMS)
Professional network for software engineers
CMS for Rails
Beautifully Simple Billing Software
open standards microblogging platform
let your clients do the copy writing
web based project management (forked from redmine)
makes time tracking and project management easy
This project provides common APIs for applications that live on VA.gov (formerly vets.gov APIs).
learn the basics of programming with Ruby
your personal cloud and media server
mixes for the masses
This project is part of Ecosyste.ms: Tools and open datasets of critical open source software.
Open311 Status monitors and aggregates the status of dozens of Open311 API endpoints, providing benchmarks and comparative insights.
A collaborative database of all public, private, and unmapped airports in the US.
A beautiful CMS for Rails developers