OpenStreetMap is a free, editable map of the whole world that is being built by volunteers and released with an open-content license. The map contains data about roads, trails, cafes, railway stations, and more.
A collaborative learning platform for software developers.
Discourse is the open source discussion platform built for the next decade of the Internet.
Loomio is an app for collaborative decision-making. It empowers groups to come together, build shared understanding, and agree on a clear course of action.
Hound is an automated review for code style.
Sharetribe is an open source platform wich provides the easiest way to create peer-to-peer marketplace website in the spirit of Airbnb, Fiverr or Etsy.
Spree is a complete open source e-commerce solution for Ruby on Rails.
OpenProject is free and open source web-based project collaboration software. It supports project teams throughout the whole project life-cycle.
Selfstarter is an open source starting point for building your own ad-hoc crowdfunding site.