The only one I know is 7za but it shows speed similar to zip.
I made a quick test for zip, 7za (with -mmt8) and jar. Results are almost same, and 7za is lowest one (what is strange 'cos it should run in 8 threads)
Is there any multithread impleemntations?
P.S. I need only zip/gzip implementation. Unfortunatly I can't use other archivers.