makeplane
🔥🔥🔥 Open-source Jira, Linear, Monday, and ClickUp alternative. Plane is a modern project management platform to manage tasks, sprints, docs, and triage.
opf
OpenProject is the leading open source project management software.
easysoft
Zentao is an agile(scrum) project management system/tool, Free Upgrade Forever!
bestpractical
Request Tracker, an enterprise-grade issue tracking system
edgewall
Trac is an enhanced wiki and issue tracking system for software development projects (mirror)