It can create PLAIN dm-crypt, LUKS, TrueCrypt and VeraCrypt volumes.
It can unlock PLAIN dm-crypt, LUKS, TrueCrypt, VeraCrypt and Bitlocker volumes.
It can create PLAIN dm-crypt, LUKS, TrueCrypt and VeraCrypt volumes.
It can unlock PLAIN dm-crypt, LUKS, TrueCrypt, VeraCrypt and Bitlocker volumes.
It also doesn't hurt if you hash it into or xor with existing randomness, it will still be as strong as the best source of entropy you have even if it's all 0's being mixed in.
Bitlocker and FireVault are very easy to use compared to VeraCrypt or LUKS, and they are much more common. So many Linux installations don't have disk encryption…
The big plus for VeraCrypt (and TrueCrypt before that), however, is that it works on Windows, macOS, and Linux. If you need an encrypted flash drive for sharing data between different systems, it's the only option that I know of. Which is unfortunate.