MantisBT is a popular open source web-based bug tracking system. Built on PHP and supports Linux, Windows and macOS on the server side. Compatible with Chrome, Firefox, Safari, Opera and IE 10+. Released under the terms of the GNU General Public License (GPL).
MantisBT makes collaboration with team members & clients easy, fast, and professional.
MantisBT is an open source issue tracker that provides a delicate balance between simplicity and power. Users are able to get started in minutes and start managing their projects while collaborating with their teammates and clients effectively. Once you start using it, you will never go back!