Diaspora
community-run, distributed social-network
Ekylibre
farm management information system
exercism.io
code practice and mentorship
GitLab
self hosted Git management
Growstuff
tool for small-scale food growers
Mastodon
distributed, interconnected microblogging
Open Build Service
build service for Linux packages
Open-Source Event Manager
event management tool tailored to conferences
planningalerts.org.au
planning alerts for Australians
Sanataro
household accounting software
TagTeam
social tagging for academics