Description:

wimlib is an open source, cross-platform library for creating,
extracting, and modifying Windows Imaging (WIM) archives. WIM is a
file archiving format, somewhat comparable to ZIP (and many other file
archiving formats); but unlike ZIP, it allows storing various
Windows-specific metadata, allows storing multiple "images" in a
single archive, automatically deduplicates all file contents, and
supports optional solid compression to get a better compression ratio.
wimlib and its command-line frontend wimlib-imagex provide a free and
cross-platform alternative to Microsoft's WIMGAPI, ImageX, and DISM.