Abalone
data tracking and analytics for conservation efforts
AirCasting
platform for gathering, visualization and sharing of environmental data
alonetone
home for musicians, their tracks and albums
Autolab
course management and auto-grading of assignments
BareMetrics.com
v1 of baremtrics.com
brief-ideas
journal for brief ideas
Catarse
open-source crowdfunding platform
Central
Fulcrum project planning tool fork
Chatwoot
customer engagement platform
CircuitVerse.org
circuit simulator
Classroom
automates repository creation and access control for teachers
Cuttlefish
a good-enough SMTP server so you can ditch SMTP providers
ebwiki.org
database of police abuse cases against people of color
Fairmondo
free market place in the hand of the users
fromthepage.com
crowdsource handwritten documents
GitReports.com
allow anonymous users to submit bugs to GitHub repos
Helpful
simple and elegant support system
Hours
Time registration that doesn't suck.
Huboard.com
better GitHub issues
Human Essentials
management system for essentials banks
icare
carpooling platform
iNaturalist.org
social network for nature stuff
Lewsnetter
email marketing application
Notebook.ai
structured writing tool
OneBody
church management software
OpenFoodNetwork
software to manage the lifecycle of food
Organization for Transformative Works Archive
archives of fanworks, including fanfic, fanart, and fan vids
Panoptes
API to support user-defined research projects
Pupilfirst
everything you need for an online school
Racing On Rails
bike racing association management
Registry
TLD management software
sharetribe
Marketplace platform
SmartVPN Billing
billing management for hosting
Splits.io
speedrunning data and analysis
StockAid
manages inventory for the Grateful Garment Project
sumofus.org
source code to sumofus.org
TalentProtocol.com
be your own NFT
TheOdinProject.com
free web development courses
uk-postcodes
postcodes application
WikiEduDashboard
course dashboard system
World Cube Association
everything for the World Cube Association