Mantis Bug Tracker is a free and open source, web-based bug tracking system. The most common use of MantisBT is to track software defects.
License: Open Source
Mantis Bug Tracker is a lightweight tool primarily designed for bug tracking with a focus on simplicity, whereas Tuleap Open ALM offers a comprehensive suite of tools for managing the entire application lifecycle, including project management and collaboration features. This makes Tuleap more suitable for larger and more complex projects.