Abalone
data tracking and analytics for conservation efforts
AirCasting
platform for gathering, visualization and sharing of environmental data
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
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
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
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
Cuttlefish
a good-enough SMTP server so you can ditch SMTP providers
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
Diaspora
community-run, distributed social-network
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
Email Dashboard
email suite for marketing and CRM
Envizon
network visualization and pentest reporting
Errbit
open source, self-hosted error catcher
exercism.io
code practice and mentorship
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
Gamocosm.com
Minecraft server hosting
getsiteinspector.com
a tool for developers to check their pages
Ghostlight Folio
theatrical production management
GitLab
self hosted Git management
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
Hitobito
full-scale group hierarchy management
Hound
Your code, always in style.
huginn
open-source IFTTT
Human Essentials
management system for essentials banks
Intercity
web-based Dokku deployment
LearnAwesome.org
social network of learners
libraries.io
open-source discovery service
Listed.to
online publications with automatic newsletters
lobsters
link-aggregation site, inspired by Hacker News
Loomio
make decisions together
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
Octobox
GitHub notification manager
OpenFoodNetwork
software to manage the lifecycle of food
OpenProject
project management system
Open Source Billing
Beautifully Simple Billing Software
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
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
Plylst
Spotify playlist tool
Podify
make podcasts from youtube-dl
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
RebelsManager
a platform for social good
Recipy.fr
defunct website of a recipe site
rubygems.org
The Ruby community's gem hosting service
rubytoolbox.com
catalog of all Rubygems that keeps track of popularity and health metrics
sharetribe
Marketplace platform
ShinyCMS
plugin-based CMS
Snippet Manager
manage your snippets
Splits.io
speedrunning data and analysis
StockAid
manages inventory for the Grateful Garment Project
TagTeam
social tagging for academics
TalentProtocol.com
be your own NFT
Terrastories
geostorytelling
Texterify.com
translation and localization management
TimeOverflow
time banking system
Tracks
software for implementing David Allen's Getting Things Done™ methodology
vglist.co
video game library tracking
Vinifera
tool to monitor leaked secrets
weg.li
report bad german parkers
Wreeto
note-taking, knowledge management, and wiki
zammad
enterprise-ready helpdesk and customer support system