Amahi
your personal cloud and media server
BareMetrics.com
v1 of baremtrics.com
brief-ideas
journal for brief ideas
Brimir
an email helpdesk
Chatwoot
customer engagement platform
Clain for Crown Court Defense
advocacy for defense payments
Cuttlefish
a good-enough SMTP server so you can ditch SMTP providers
datorss.com
RSS search
Do Continuous Integration Yourself
open-source CI server
Duckrails
tool to mock API endpoints
Ekylibre
farm management information system
exercism.io
code practice and mentorship
Expertiza
peer-reviews app, supported by the National Science Foundation
FeedBunch
simple and elegant reader
Helpful
simple and elegant support system
Hitobito
full-scale group hierarchy management
iNaturalist.org
social network for nature stuff
Morph.io
web scraping tool
OpenProject
project management system
Open Source Billing
Beautifully Simple Billing Software
Open Split Time
endurance event data management
Organization for Transformative Works Archive
archives of fanworks, including fanfic, fanart, and fan vids
planningalerts.org.au
planning alerts for Australians
PublicLab.org
collaborative knowledge-exchange platform
Pupilfirst
everything you need for an online school
Racing On Rails
bike racing association management
RebelsManager
a platform for social good
Registry
TLD management software
sharetribe
Marketplace platform
Splits.io
speedrunning data and analysis
Texterify.com
translation and localization management
tip4commit.com
reward contributors
World Cube Association
everything for the World Cube Association