Code development
The code is released under GNU GPL3 license and it's accessible through Subversion repository. For recent changes, see SVN log.
Main project language is Object Pascal, compiled through the multi-platform FreePascal compiler (version 2.6.0 and higher recommended). Code also contains optional SIMD assembly optimized functions (32/64-bit x86 MMX+SSE2), so you are going to need an assembler like Yasm, too.