Abalone
data tracking and analytics for conservation efforts
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
AppPerf
application and performance monitoring tool
Astuto
customer feedback tool
Barong
auth server
Bike Index
the internet's bike registry
Black Candy
self-hosted music streaming server
Bluedoc
document management tool
Brainstormer.online
collaborative brainstorming
Calls For Proposal App
manage a conference CFP
Canvas LMS
enterprise-grade learning management system
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
CodeTriage
directory of open-source projects with open issues
Coinfi
crypto market intelligence platform
Convene
digital spaces
Covidlist
connect vaccinations with those who need to be vaccinated
Coyote
image annotation
Danbooru
taggable image board
Datoji
easy JSON mocking for developers
datorss.com
RSS search
DCAF Case Management
case management system
Decidim
a framework for democracy
Discourse
next-generation discussion platform
Droptune
music notifications for Spotify and Apple Music
ebwiki.org
database of police abuse cases against people of color
Ecosystem Dashboard
open-source ecosystem monitoring
Ekylibre
farm management information system
exercism.io
code practice and mentorship
Fat Free CRM
a clean, customizable CRM
FederalRegister.gov
daily journal for the United States Government
Feedbin
open-source feed reader for multiple platforms
FeedBunch
simple and elegant reader
FleetYards
A Ship Database and Web API based on the official Star Citizen Ship Matrix
forem
the platform that powers dev.to
fromthepage.com
crowdsource handwritten documents
Gem.sh
Beautiful documentation for any RubyGem
getsiteinspector.com
a tool for developers to check their pages
Ghostlight Folio
theatrical production management
GitLab
self hosted Git management
Gwaphics
graphic design tool
Hackathon Manager
hackathon registration and logistics
Hackershare
social bookmarking and knowledge-sharing
Haven
self-hostable private blogging
Hitobito
full-scale group hierarchy management
huginn
open-source IFTTT
icare
carpooling platform
LearnAwesome.org
social network of learners
libraries.io
open-source discovery service
Loomio
make decisions together
LumenDatabase
database of legal complaints and requests for removals
Mastodon
distributed, interconnected microblogging
Morph.io
web scraping tool
Motor Admin
if ActiveAdmin and Blazer had a baby
nindika.com
nintendo switch e-shop
nokul
solution for universities to manage all the complex procedures of a university online
Notebook Gallery
enterprise Jupyter notebook sharing and collaboration platform
Octobox
GitHub notification manager
OpenFoodNetwork
software to manage the lifecycle of food
OpenProject
project management system
OpenSourceRails.org
the codebase to this site
Open Split Time
endurance event data management
openstreetmap.org
crowd-sourced map of the world
Outpost
service directories platform
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
Plylst
Spotify playlist tool
Punchclock
simple electronic punch clock
Racing On Rails
bike racing association management
RebelsManager
a platform for social good
Recipy.fr
defunct website of a recipe site
Registry
TLD management software
Reservations
equipment loans and reservations software
rubygems.org
The Ruby community's gem hosting service
rubytoolbox.com
catalog of all Rubygems that keeps track of popularity and health metrics
samson
Web interface for deployments
sharetribe
Marketplace platform
Skyderby
flight analysis and competition scoring
Snippet Manager
manage your snippets
Splits.io
speedrunning data and analysis
StockAid
manages inventory for the Grateful Garment Project
sumofus.org
source code to sumofus.org
TagTeam
social tagging for academics
TalentProtocol.com
be your own NFT
Texterify.com
translation and localization management
TheOdinProject.com
free web development courses
TimeOverflow
time banking system
Upcase.com
learning platform for programming
va.gov
API for va.gov
vglist.co
video game library tracking
Vinifera
tool to monitor leaked secrets
visualizer.coffee
visualize hipster coffee machines
weg.li
report bad german parkers
whitehall
government content publishing for gov.uk
WikiEduDashboard
course dashboard system
zammad
enterprise-ready helpdesk and customer support system