DwarFS is a high-compression read-only file system designed for Linux and Windows, focusing on achieving very high compression ratios for redundant data. It outperforms other compressed file systems like SquashFS in terms of compression, build speed, and access speed. DwarFS implements features like file clustering, segmentation analysis, and a categorization framework to efficiently utilize redundancy across files. The author started working on DwarFS in 2013 to compress multiple versions of Perl. With easy building and installation, prebuilt binaries are available for Linux and Windows. Windows and macOS support is experimental. DwarFS is multi-threaded and offers exceptional compression capabilities, making it a valuable tool for various use cases.
https://github.com/mhx/dwarfs