BMT is a file format used by Alpha Five development environment. Alpha Software, developer of Alpha Five, discontinued the project and launched a new programming platform in 2013, called Alpha Anywhere, which offered better compatibility and support for mobile solutions.

BMT files were used for storing image libraries. BMT is not, however, an image format, but a database format. BMT could not be converted to other formats. Alpha Five was a paid software and had a free trial version.