Open-source Project Planning Tool
"A project planning tool you will fall in love with: Plane helps you track your issues, epics, and product roadmaps in the simplest way possible.
With its intuitive UI and powerful features, Plane makes it easy to plan and track projects, assign tasks to team members, and monitor progress.
Plane is open-source and built with React, TypeScript, NextJS and Python. Host it on your own servers and easily extend it with custom integrations using a rich set of developer APIs. This allows you to tailor Plane to your specific needs and avoid being limited by platform features."