BSP builder that generates BSP source files containing XOR or IPS patches, as well as compiling BSP source files (based on the BSP compiler found in https://github.com/aaaaaa123456789/bsp)
Pre-compiled binaries contain code from GCC, which is copyrighted by the FSF via GPLv3+ with the famous GCC exception. This is essentially a "do whatever the hell you want" license, but it's not public domain.