Due.work - Simplify your work, to-do's and communications
Usersnap - Usersnap is a customer feedback software for SaaS companies that need to constantly improve and grow their products.
360Katas - Open source Slack app for self development.
Redmine - Flexible project management web application
Kaapi - Build happy, high-performing remote teams
Jira - The #1 software development tool used by agile teams. Jira Software is built for every member of your software team to plan, track, and release great software.