AppPerf
application and performance monitoring tool
Chaskiq
full-featured live chat, support, and marketing platform
Chatwoot
customer engagement platform
Classroom
automates repository creation and access control for teachers
CodeTriage
directory of open-source projects with open issues
Coyote
image annotation
Discourse
next-generation discussion platform
EasyRaceLapTimer
open-source IR lap time tracker
ebwiki.org
database of police abuse cases against people of color
Ekylibre
farm management information system
Email Dashboard
email suite for marketing and CRM
Expertiza
peer-reviews app, supported by the National Science Foundation
Fairmondo
free market place in the hand of the users
GitLab
self hosted Git management
Mastodon
distributed, interconnected microblogging
Organization for Transformative Works Archive
archives of fanworks, including fanfic, fanart, and fan vids
TagTeam
social tagging for academics
va.gov
API for va.gov
Vinifera
tool to monitor leaked secrets