Mantis2Go is an out of the box installation of MantisBT (a free popular web-based bugtracking system) for Windows.
Do not use for production purposes!
Maybe the easiest way to try MantisBT on Windows:
1. Start Mantis2Go installer
2. Choose directory where you want to install Mantis2Go (USB stick if you want)
3. Click "Yes" to start Mantis2Go