AgileVentures
source code to agileventures.org
Amahi
your personal cloud and media server
Autolab
course management and auto-grading of assignments
Barong
auth server
Bike Index
the internet's bike registry
Binda CMS
headless CMS
Calls For Proposal App
manage a conference CFP
Catarse
open-source crowdfunding platform
Central
Fulcrum project planning tool fork
Chatwoot
customer engagement platform
Clain for Crown Court Defense
advocacy for defense payments
Classroom
automates repository creation and access control for teachers
Coinfi
crypto market intelligence platform
Cuttlefish
a good-enough SMTP server so you can ditch SMTP providers
Datoji
easy JSON mocking for developers
Drug Gene Interaction Database
The Genome Institute's drug gene interaction database
Duckrails
tool to mock API endpoints
EasyRaceLapTimer
open-source IR lap time tracker
Ekylibre
farm management information system
Expertiza
peer-reviews app, supported by the National Science Foundation
Fae CMS
another CMS
Fat Free CRM
a clean, customizable CRM
FeedBunch
simple and elegant reader
fromthepage.com
crowdsource handwritten documents
GitLab
self hosted Git management
GitReports.com
allow anonymous users to submit bugs to GitHub repos
Growstuff
tool for small-scale food growers
Helpful
simple and elegant support system
Hitobito
full-scale group hierarchy management
Hours
Time registration that doesn't suck.
Human Essentials
management system for essentials banks
if-me.org
mental health communication
iNaturalist.org
social network for nature stuff
Intercity
web-based Dokku deployment
Juvia
commenting server of the likes of Discus or IntenseDebate
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
LumenDatabase
database of legal complaints and requests for removals
Morph.io
web scraping tool
Notebook.ai
structured writing tool
OpenFarm
open database for farming and gardening knowledge
OpenFoodNetwork
software to manage the lifecycle of food
openSNP
annotate your SNP-set
Open-Source Event Manager
event management tool tailored to conferences
Organization for Transformative Works Archive
archives of fanworks, including fanfic, fanart, and fan vids
Outpost
service directories platform
Panoptes
API to support user-defined research projects
Peatio
crypto currency exchange software
pinballmap.com
source code to pinballmap.com
Postal
mail delivery platform for incoming and outgoing e-mail
RebelsManager
a platform for social good
Registry
TLD management software
Reservations
equipment loans and reservations software
Sanataro
household accounting software
sharetribe
Marketplace platform
SmartVPN Billing
billing management for hosting
Snippet Manager
manage your snippets
sumofus.org
source code to sumofus.org
TagTeam
social tagging for academics
TaxonWorks
workbench for biodiversity informatics
Teambox
the original teambox.com
Texterify.com
translation and localization management
TimeOverflow
time banking system
tip4commit.com
reward contributors
Tracks
software for implementing David Allen's Getting Things Done™ methodology
Trado
simple e-commerce platform for developers
uk-postcodes
postcodes application
Upcase.com
learning platform for programming
va.gov
API for va.gov
vglist.co
video game library tracking
World Cube Association
everything for the World Cube Association