24pullrequests
Give back to open-source
Abalone
data tracking and analytics for conservation efforts
Action Center
EFF Action Center platform
ActiveWorkflow.org
turn complex requirements to workflows
AgileVentures
source code to agileventures.org
AirCasting
platform for gathering, visualization and sharing of environmental data
Airesis
eDemocracy
Alaveteli
easy FOIA requests for any jurisdiction
alonetone
home for musicians, their tracks and albums
Amahi
your personal cloud and media server
Annict.com
anime website
AppPerf
application and performance monitoring tool
AskThem
monitor and interact with local government
Astuto
customer feedback tool
Autolab
course management and auto-grading of assignments
Barong
auth server
Bike Index
the internet's bike registry
Binda CMS
headless CMS
brief-ideas
journal for brief ideas
C2
approval process automation
Caffeinate
a framework for easily creating and scheduling email campaigns
Calls For Proposal App
manage a conference CFP
Canvas LMS
enterprise-grade learning management system
Carto
location intelligence and data visualization
Case File Editor
editor for digital case files
Catarse
open-source crowdfunding platform
Central
Fulcrum project planning tool fork
Chaskiq
full-featured live chat, support, and marketing platform
Chatwoot
customer engagement platform
CircuitVerse.org
circuit simulator
Clain for Crown Court Defense
advocacy for defense payments
Classroom
automates repository creation and access control for teachers
consul
open government and participation software
Convene
digital spaces
Coursemology
open-source gameified learning platform
Covidlist
connect vaccinations with those who need to be vaccinated
Coyote
image annotation
CrimeThinc.com
the app that powers this website
CSVLint.io
validate CSV files
Cuttlefish
a good-enough SMTP server so you can ditch SMTP providers
Datoji
easy JSON mocking for developers
datorss.com
RSS search
Diaspora
community-run, distributed social-network
Discourse
next-generation discussion platform
Do Continuous Integration Yourself
open-source CI server
Dog API
an API for doggo info
dokno
Rails Engine for storing and managing an app's domain knowledge
Drug Gene Interaction Database
The Genome Institute's drug gene interaction database
Duckrails
tool to mock API endpoints
EasyRaceLapTimer
open-source IR lap time tracker
ebwiki.org
database of police abuse cases against people of color
Email Dashboard
email suite for marketing and CRM
Errbit
open source, self-hosted error catcher
Expertiza
peer-reviews app, supported by the National Science Foundation
Fae CMS
another CMS
Fat Free CRM
a clean, customizable CRM
Fat Free CRM
the original Rails-based CRM
FederalRegister.gov
daily journal for the United States Government
FeedBunch
simple and elegant reader
FleetYards
A Ship Database and Web API based on the official Star Citizen Ship Matrix
FoodSoft
manage food coop
forem
the platform that powers dev.to
fromthepage.com
crowdsource handwritten documents
Fulcrum
Original project planning
getsiteinspector.com
a tool for developers to check their pages
Ghostlight Folio
theatrical production management
GitLab
self hosted Git management
GitLab CI
continuous integration server
GitReports.com
allow anonymous users to submit bugs to GitHub repos
Growstuff
tool for small-scale food growers
Heaven
github flow orchestrator
Helpful
simple and elegant support system
Hitobito
full-scale group hierarchy management
Hound
Your code, always in style.
Hours
Time registration that doesn't suck.
HRMS
HR management
huginn
open-source IFTTT
Human Essentials
management system for essentials banks
icare
carpooling platform
if-me.org
mental health communication
iNaturalist.org
social network for nature stuff
JobsWorth
Project management, time tracking, billing
Juvia
commenting server of the likes of Discus or IntenseDebate
kitsu
kitsu.io API server
Klaxon
get emailed when a website changes
Lale Help
collaborative platform for refugee support
Lewsnetter
email marketing application
libraries.io
open-source discovery service
lobsters
link-aggregation site, inspired by Hacker News
LocalOrbit
local food management stuff
Locomotive CMS
a multisite CMS with liquid templating
Loomio
make decisions together
LumenDatabase
database of legal complaints and requests for removals
MarkUs
submission and grading for student assignments
Mastodon
distributed, interconnected microblogging
Morph.io
web scraping tool
Motor Admin
if ActiveAdmin and Blazer had a baby
nindika.com
nintendo switch e-shop
OneBody
church management software
OnRuby
whitelabel for ruby community management
Open Build Service
build service for Linux packages
OpenFarm
open database for farming and gardening knowledge
OpenFoodNetwork
software to manage the lifecycle of food
OpenProject
project management system
openSNP
annotate your SNP-set
Open Source Billing
Beautifully Simple Billing Software
Open-Source Event Manager
event management tool tailored to conferences
OpenSourceRails.org
the codebase to this site
Open Split Time
endurance event data management
Organization for Transformative Works Archive
archives of fanworks, including fanfic, fanart, and fan vids
Orientation.io
Wage war against outdated documentation
Outpost
service directories platform
Panoptes
API to support user-defined research projects
Peatio
crypto currency exchange software
Pig CI
Rails performance monitoring, plus CI
pinballmap.com
source code to pinballmap.com
planningalerts.org.au
planning alerts for Australians
Podify
make podcasts from youtube-dl
Pokr
agile estimating and planning
Postal
mail delivery platform for incoming and outgoing e-mail
Punchclock
simple electronic punch clock
Pupilfirst
everything you need for an online school
RailsCasts
RailsCasts.com source code (thanks Ryan)
RebelsManager
a platform for social good
Recipy.fr
defunct website of a recipe site
Rescue
save cute cuddly puppies
Reservations
equipment loans and reservations software
RubyTogether.org
RubyTogether.org
rubytoolbox.com
catalog of all Rubygems that keeps track of popularity and health metrics
Sanataro
household accounting software
sharetribe
Marketplace platform
ShinyCMS
plugin-based CMS
Skyderby
flight analysis and competition scoring
SmartVPN Billing
billing management for hosting
Snippet Manager
manage your snippets
Splits.io
speedrunning data and analysis
Squash
exception reporting and bug analysis by Square
StockAid
manages inventory for the Grateful Garment Project
Storytime
another CMS
sumofus.org
source code to sumofus.org
TagTeam
social tagging for academics
TalentProtocol.com
be your own NFT
TaxonWorks
workbench for biodiversity informatics
Teambox
the original teambox.com
Terrastories
geostorytelling
Texterify.com
translation and localization management
TheOdinProject.com
free web development courses
TheyVoteForYou
Holding politicians accountable
TimeOverflow
time banking system
tip4commit.com
reward contributors
Trado
simple e-commerce platform for developers
Trailmix
A place to write.
Twist
book review application
Upcase.com
learning platform for programming
va.gov
API for va.gov
Verboice
Toolkit for people who literally "need a voice"
vglist.co
video game library tracking
weg.li
report bad german parkers
WikiEduDashboard
course dashboard system
World Cube Association
everything for the World Cube Association
Xrono
asset and time-tracking
zammad
enterprise-ready helpdesk and customer support system