AgileVentures
source code to agileventures.org
Bluedoc
document management tool
Calls For Proposal App
manage a conference CFP
CircuitVerse.org
circuit simulator
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
Discourse
next-generation discussion platform
Ecosystem Dashboard
open-source ecosystem monitoring
Errbit
open source, self-hosted error catcher
exercism.io
code practice and mentorship
forem
the platform that powers dev.to
GitLab
self hosted Git management
Hackershare
social bookmarking and knowledge-sharing
Helpy
A Modern Helpdesk Alternative
Hound
Your code, always in style.
libraries.io
open-source discovery service
Morph.io
web scraping tool
Notebook Gallery
enterprise Jupyter notebook sharing and collaboration platform
Octobox
GitHub notification manager
Open-Source Event Manager
event management tool tailored to conferences
openstreetmap.org
crowd-sourced map of the world
Pig CI
Rails performance monitoring, plus CI
Pokr
agile estimating and planning
PublicLab.org
collaborative knowledge-exchange platform
Pupilfirst
everything you need for an online school
rubygems.org
The Ruby community's gem hosting service
samson
Web interface for deployments
TheOdinProject.com
free web development courses
tip4commit.com
reward contributors
Upcase.com
learning platform for programming
weg.li
report bad german parkers
zammad
enterprise-ready helpdesk and customer support system