7-Zip 24.05 file archiver introduces speed optimizations for decompression, support for new archive types, and enhanced hash algorithm capabilities. https://linuxiac.com/7-zip-24-05-file-archiver/
I put together a timeline of the xz attack, dating back to 2021. Corrections or additions welcome here on Mastodon. https://research.swtch.com/xz-timeline
@rsc Thanks. Going even further back, I seem to recall some heated discussions about multi-threaded compression support in #XZ. A quick search only turns up https://sourceforge.net/p/lzmautils/discussion/708858/thread/d37155d1/ which is rather civil. Perhaps they were elsewhere in SourceForge (directed at Igor Pavlov?).
I'm impressed by #7zip's compression abilities when it comes to PDF files. Use case: I have 260 PDF files (each around 90 KiB), but only 60 of them are unique (scroll down for why). Not only does it compress the unique files very well, it also detects the redundancy and duplicates.
The whole archive has 148 KiB, that's less than 2 PDF files. By comparison, the best result I get with #zip is 18 MiB (maybe I have missed some magic options).