What I'm using is encfs. The advantage is that it's portable: just a folder. The disadvantage, I think, is that it is slow. I would actually prefer an encrypted partition.

Some choices of encrypted partitions are:

• cryptsetup & LUKS
  • https://gitlab.com/cryptsetup/cryptsetup
• eCryptFS is an alternative?

Trash

• VeraCrypt - appears to be a windows thing?
  • https://veracrypt.eu/en/Beginner%27s%20Tutorial.html