Bugzilla
Bugzilla is a long-standing open-source bug tracking system used by many open-source projects. It manages issues or incidents, providing robust search, email notifications, and custom fields. Access control and saved searches help teams prioritize urgent bugs. While aimed at software bug management, it can be repurposed for general incident tracking. Bugzilla suits dev teams wanting a stable, free solution with proven workflows for logging, tracking, and resolving issues over time.