Mantis Bug Tracker (MantisBT) is a Web-based issue tracking system that is both simple to use and highly customisable. A plugin system allows users to easily create and add new features. MantisBT is over 10 years old and is actively developed.
SeedDMS is a powerful, easy to use document management system forked from and fully compatible with LetoDMS. Many years of development has made it a mature and enterprise-ready plattform for sharing and storing documents.