Perforce is a commercial revision control system. This is the command
line client which works with servers remotely or locally.
The clients and the api for Perforce is freely available.

This build does not support the "Extensions" feature.

The server is no longer available for FreeBSD but the Linux version
should work. There is a limited free use level and non-profit
organizations might qualify for free licencing.

See "p4 -V" for more licensing and version information.
See https://ftp.perforce.com/perforce/r22.2/doc/user/ for release notes.