Krypta 2.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. Krypta for Mac lies within Security Tools, more precisely Personal Security. We recommend checking the downloaded files with any free antivirus. The actual developer of this Mac application is Mirage Software.
From the developer:
Krypta uses three layers of multiple encryption. Each file or volume is encrypted with one layer (800,000 iterations) of 256-bit AES, one layer (800,000 iterations) of 256-bit Twofish, and then one layer (800,000 iterations) of 256-bit Serpent ciphers. Each layer of encryption uses an independent SALT (Random hash) an independent password, and independent hashing functions.
You may want to check out more software for Mac, such as Krypter X or AutoKrypt, which might be similar to Krypta.