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
AppPerf
application and performance monitoring tool
AskThem
monitor and interact with local government
BareMetrics.com
v1 of baremtrics.com
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
brief-ideas
journal for brief ideas
Calls For Proposal App
manage a conference CFP
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
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
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
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
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
EasyRaceLapTimer
open-source IR lap time tracker
Ecosystem Dashboard
open-source ecosystem monitoring
Ekylibre
farm management information system
Email Dashboard
email suite for marketing and CRM
Envizon
network visualization and pentest reporting
exercism.io
code practice and mentorship
Expertiza
peer-reviews app, supported by the National Science Foundation
FabManager
FabLab management tool
Fairmondo
free market place in the hand of the users
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
Gamocosm.com
Minecraft server hosting
getsiteinspector.com
a tool for developers to check their pages
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
Hackathon Manager
hackathon registration and logistics
Hackershare
social bookmarking and knowledge-sharing
HellRaiser
vulnerability scanner
Helpful
simple and elegant support system
Homeland
homeland.ruby-china.org
Hound
Your code, always in style.
Huboard.com
better GitHub issues
HyperCable
analytics
if-me.org
mental health communication
Intercity
web-based Dokku deployment
kitsu
kitsu.io API server
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
Loomio
make decisions together
Mastodon
distributed, interconnected microblogging
Morph.io
web scraping tool
nokul
solution for universities to manage all the complex procedures of a university online
Notebook.ai
structured writing tool
Octobox
GitHub notification manager
OpenFoodNetwork
software to manage the lifecycle of food
openSNP
annotate your SNP-set
Open Source Billing
Beautifully Simple Billing Software
OpenSourceRails.org
the codebase to this site
Open Split Time
endurance event data management
Orientation.io
Wage war against outdated documentation
Panoptes
API to support user-defined research projects
Pig CI
Rails performance monitoring, plus CI
planningalerts.org.au
planning alerts for Australians
Plylst
Spotify playlist tool
Podify
make podcasts from youtube-dl
Pokr
agile estimating and planning
PublicLab.org
collaborative knowledge-exchange platform
Punchclock
simple electronic punch clock
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
rubytoolbox.com
catalog of all Rubygems that keeps track of popularity and health metrics
Skyderby
flight analysis and competition scoring
SmartVPN Billing
billing management for hosting
StockAid
manages inventory for the Grateful Garment Project
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
Trado
simple e-commerce platform for developers
Trailmix
A place to write.
Twist
book review application
va.gov
API for va.gov
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
WikiEduDashboard
course dashboard system
World Cube Association
everything for the World Cube Association
Wreeto
note-taking, knowledge management, and wiki