AirCasting
platform for gathering, visualization and sharing of environmental data
Bike Index
the internet's bike registry
brief-ideas
journal for brief ideas
Catarse
open-source crowdfunding platform
Chatwoot
customer engagement platform
Concerto
digital signage system
consul
open government and participation software
Danbooru
taggable image board
Diaspora
community-run, distributed social-network
Fairmondo
free market place in the hand of the users
Fat Free CRM
a clean, customizable CRM
Feedbin
open-source feed reader for multiple platforms
FeedBunch
simple and elegant reader
FleetYards
A Ship Database and Web API based on the official Star Citizen Ship Matrix
Ghostlight Folio
theatrical production management
GitLab
self hosted Git management
Growstuff
tool for small-scale food growers
Huboard.com
better GitHub issues
OneBody
church management software
OpenFoodNetwork
software to manage the lifecycle of food
OpenProject
project management system
Open Source Billing
Beautifully Simple Billing Software
Open-Source Event Manager
event management tool tailored to conferences
PublicLab.org
collaborative knowledge-exchange platform
Pupilfirst
everything you need for an online school
Reservations
equipment loans and reservations software
Sanataro
household accounting software
Squash
exception reporting and bug analysis by Square
TaxonWorks
workbench for biodiversity informatics
Upcase.com
learning platform for programming
visualizer.coffee
visualize hipster coffee machines
whitehall
government content publishing for gov.uk