TrackDuck - Visual feedback for web design and development.
Due.work - Simplify your work, to-do's and communications
zipBoard - ZipBoard is a web-based visual bug tracking & issue tracking tool that helps developers, testers and project managers collaborate during website and elearning development.
360Katas - Open source Slack app for self development.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Kaapi - Build happy, high-performing remote teams