balrogg: lossless Vorbis/Opus recompressor
 

balrogg losslessly recompresses Ogg Vorbis and Opus files. Archives are typically 8-12% smaller than .ogg files and 3-8% smaller than .opus files. After decompression they are reconstructed identically.

The source code (GPLv3) and binaries are available here: https://github.com/iczelia/balrogg.

Hopefully some find this useful. The Windows binaries are attached to the thread (64-bit, 32-bit modern Windows, 32-bit Windows 95 and newer).