gpass is a secure passphrase generator, written in C. The generated
passphrases look like so:

chirping landing luckily dollar gnat expert

By default, passphrases are generated with pretty high entropy of 70,
and the EFF long dictionary [0] is used, but that's configurable at run
time.

The program uses arc4random(3), so it should work on BSD and GNU
systems.

You can download one of the releases at [1], clone the git repository
via [2], or browse it at [3].

[0] https://www.eff.org/files/2016/07/18/eff_large_wordlist.txt
[1] {ftp,rsync,https}://manpager.org/pub/usr/aa/gpass/
[2] ssh://anon@git.manpager.org/gpass
[3] https://git.manpager.org/?action=summary&path=gpass.git