Kryptor

Kryptor takes a principled stance on cryptographic agility by offering exactly one algorithm suite with no config knobs, which is how modern tools should work. The protocol is documented in enough detail to audit independently, and the encrypted output is indistinguishable from random, which limits metadata leakage. It is a solo-maintained project rather than a large community effort, so the pace of updates is unhurried. If you want a leaner, more modern alternative to GnuPG for file encryption and signing on the command line and you are not tied to the OpenPGP ecosystem, Kryptor is a thoughtful choice.