MantisBT

MantisBT is a web‑based issue tracking system written in PHP that stores data in MySQL, PostgreSQL, or MS SQL databases. It runs on common web servers such as Apache or IIS and can be installed on Windows, Linux, macOS, OS/2 and other platforms. The software is released under GPL‑2.0, allowing free self‑hosting without subscription fees.

The tool provides core bug‑tracking features including email notifications, per‑project role‑based access control, and customizable issue fields and workflows. Users can manage projects, track defects, and collaborate with teammates and clients through a web interface that supports modern views of issue lists and details. Documentation is supplied in multiple formats and the code follows a modular structure with clear naming conventions for configuration and API files.

MantisBT targets software development teams that need a stable, open‑source tracker that balances simplicity with extensibility. Its straightforward installation and upgrade procedures, combined with the ability to tailor notifications and access rules, make it suitable for both small projects and larger, multi‑team environments.