ActiveWorkflow.org
turn complex requirements to workflows
Alaveteli
easy FOIA requests for any jurisdiction
Annict.com
anime website
Bike Index
the internet's bike registry
Bluedoc
document management tool
Canvas LMS
enterprise-grade learning management system
Catarse
open-source crowdfunding platform
Chaskiq
full-featured live chat, support, and marketing platform
Coderwall
Professional network for software engineers
consul
open government and participation software
Coursemology
open-source gameified learning platform
Diaspora
community-run, distributed social-network
EasyRaceLapTimer
open-source IR lap time tracker
ebwiki.org
database of police abuse cases against people of color
Envizon
network visualization and pentest reporting
exercism.io
code practice and mentorship
Fat Free CRM
a clean, customizable CRM
FleetYards
A Ship Database and Web API based on the official Star Citizen Ship Matrix
GitLab
self hosted Git management
Helpful
simple and elegant support system
Helpy
A Modern Helpdesk Alternative
Hitobito
full-scale group hierarchy management
huginn
open-source IFTTT
Lewsnetter
email marketing application
OneBody
church management software
OpenProject
project management system
Open-Source Event Manager
event management tool tailored to conferences
Racing On Rails
bike racing association management
Recipy.fr
defunct website of a recipe site
Reservations
equipment loans and reservations software
sharetribe
Marketplace platform
Trado
simple e-commerce platform for developers
va.gov
API for va.gov
visualizer.coffee
visualize hipster coffee machines
weg.li
report bad german parkers
whitehall
government content publishing for gov.uk
World Cube Association
everything for the World Cube Association
Wreeto
note-taking, knowledge management, and wiki