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
Alaveteli
easy FOIA requests for any jurisdiction
Alchemy CMS
popular content management engine
alonetone
home for musicians, their tracks and albums
Annict.com
anime website
AppPerf
application and performance monitoring tool
Astuto
customer feedback tool
Barong
auth server
Binda CMS
headless CMS
Black Candy
self-hosted music streaming server
Bluedoc
document management tool
Brainstormer.online
collaborative brainstorming
Calls For Proposal App
manage a conference CFP
Chaskiq
full-featured live chat, support, and marketing platform
Chatwoot
customer engagement platform
Ciao
uptime monitoring
CircuitVerse.org
circuit simulator
Clain for Crown Court Defense
advocacy for defense payments
Classroom
automates repository creation and access control for teachers
CodeCuriosity.org
platform to reward OSS contributors
CodeTriage
directory of open-source projects with open issues
Coinfi
crypto market intelligence platform
Convene
digital spaces
Coursemology
open-source gameified learning platform
Covidlist
connect vaccinations with those who need to be vaccinated
CrimeThinc.com
the app that powers this website
Danbooru
taggable image board
Datoji
easy JSON mocking for developers
datorss.com
RSS search
Decidim
a framework for democracy
Discourse
next-generation discussion platform
Dog API
an API for doggo info
Droptune
music notifications for Spotify and Apple Music
Drug Gene Interaction Database
The Genome Institute's drug gene interaction database
E621.net
an art image board
ebwiki.org
database of police abuse cases against people of color
Ekylibre
farm management information system
Email Dashboard
email suite for marketing and CRM
Errbit
open source, self-hosted error catcher
exercism.io
code practice and mentorship
Feedbin
open-source feed reader for multiple platforms
FoodSoft
manage food coop
foreman
server lifecycle automation
Ghostlight Folio
theatrical production management
GitReports.com
allow anonymous users to submit bugs to GitHub repos
Growstuff
tool for small-scale food growers
Gwaphics
graphic design tool
Hackathon Manager
hackathon registration and logistics
Hackershare
social bookmarking and knowledge-sharing
Haven
self-hostable private blogging
Helpful
simple and elegant support system
Helpy
A Modern Helpdesk Alternative
Hitobito
full-scale group hierarchy management
Homeland
homeland.ruby-china.org
Hound
Your code, always in style.
Huboard.com
better GitHub issues
huginn
open-source IFTTT
Human Essentials
management system for essentials banks
HyperCable
analytics
icare
carpooling platform
Intercity
web-based Dokku deployment
LearnAwesome.org
social network of learners
Listed.to
online publications with automatic newsletters
LocalOrbit
local food management stuff
Locomotive CMS
a multisite CMS with liquid templating
MarkUs
submission and grading for student assignments
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.ai
structured writing tool
Notebook Gallery
enterprise Jupyter notebook sharing and collaboration platform
OneBody
church management software
OpenFarm
open database for farming and gardening knowledge
OpenFoodNetwork
software to manage the lifecycle of food
Open-Source Event Manager
event management tool tailored to conferences
Open Split Time
endurance event data management
openstreetmap.org
crowd-sourced map of the world
Organization for Transformative Works Archive
archives of fanworks, including fanfic, fanart, and fan vids
Outpost
service directories platform
Pageflow
multimedia storytelling
Pay
payments engine
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
Podify
make podcasts from youtube-dl
Pokr
agile estimating and planning
Postal
mail delivery platform for incoming and outgoing e-mail
PublicLab.org
collaborative knowledge-exchange platform
Punchclock
simple electronic punch clock
Pupilfirst
everything you need for an online school
Racing On Rails
bike racing association management
RailsDevs.com
the RailsDevs.com board
RebelsManager
a platform for social good
Recipy.fr
defunct website of a recipe site
Registry
TLD management software
Rescue
save cute cuddly puppies
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
Simple Discussion
simple and extensible Rails forum
Skyderby
flight analysis and competition scoring
Solidus
e-commerce system
Spina
A beautiful CMS for Rails developers
Splits.io
speedrunning data and analysis
Spree
a flexible e-commerce platform
StockAid
manages inventory for the Grateful Garment Project
TagTeam
social tagging for academics
TalentProtocol.com
be your own NFT
TaxonWorks
workbench for biodiversity informatics
Terrastories
geostorytelling
Texterify.com
translation and localization management
TheOdinProject.com
free web development courses
TheyVoteForYou
Holding politicians accountable
TimeOverflow
time banking system
Trado
simple e-commerce platform for developers
Upcase.com
learning platform for programming
vglist.co
video game library tracking
Vinifera
tool to monitor leaked secrets
Violet
automation, CMS, blog, forum and email thing.
visualizer.coffee
visualize hipster coffee machines
weg.li
report bad german parkers
World Cube Association
everything for the World Cube Association
Wreeto
note-taking, knowledge management, and wiki
zammad
enterprise-ready helpdesk and customer support system