I've tried a number of ZPAQ implementations for Linux, but I don't like that they are all command-line programs, and thus require a lot of typing to get simple things done. My file browser supports compression of files and folders with a "compress..." option in the context menu, but the formats I can choose from are less effective than ZPAQ. The only program with ZPAQ support that showed up on this list was lrzip, but lrzip uses the LZMA algorithm when used this way.
Is there a program that I can install to allow ZPAQ compression from the context menu, or a way to make my File-Roller clone (Engrampa) run lrzip in ZPAQ mode?