> But I can't compile the codec because I don't own any Microsoft software. I don't even remember who compiled my patch for 7zip. You can compile them for Linux as in examples in the same thread: encode.su encode.su/threads/3824-7z-xorfilter-7z-plugin-example?p=81391&viewfull=1#post81391 . I can manage mingw compilation, no problem. Linux sources are on 7zip sourceforge site or, better in this repo I alredy recommended: github.com github.com/cielavenir/p7zip . > If Igor Pavlov sees lzip as a competitor to xz and 7zip, then I don't know what he thinks but he openly refused it numerous times. ( sourceforge.net sourceforge.net/p/sevenzip/discussion/search/?q=lzip ) I can only guess, from what I see. All the best