AgileVentures
source code to agileventures.org
Amahi
your personal cloud and media server
Catarse
open-source crowdfunding platform
Expertiza
peer-reviews app, supported by the National Science Foundation
Haven
self-hostable private blogging
Helpy
A Modern Helpdesk Alternative
HRMS
HR management
libraries.io
open-source discovery service
Listed.to
online publications with automatic newsletters
lobsters
link-aggregation site, inspired by Hacker News
PublicLab.org
collaborative knowledge-exchange platform