I'm glad to inform you that I've released PeaZip for BSD yesterday, compiled and tested on PC-BSD 9:
The package is a portable application (no installation is required), and contains natively compiled peazip, pea, pealauncher, and p7zip, providing most of the program's functions from native BSD binaries.
Linux binaries are used for other backends, due to compatibility provided by BSD systems to Linux binaries.
Alternatively, PeaZip Portable for Linux (GTK2, Qt) can be used on BSD systems.
Any help and suggestion is welcome to build Ports, PBI and other types of packages for BSD communities.