TrueCrypt
Open Source
TrueCrypt is an open source software to encrypt volumes of data. It even supports the creation of virtual encrypted volumes which is portable.
Cryptomator
Open Source
Cryptomator is a multi-platform transparent client-side encryption of your files in the cloud.
VeraCrypt
Open Source
VeraCrypt is an open-source utility used for on-the-fly encryption (OTFE). It can create a virtual encrypted disk within a file or encrypt a partition.
Compare BoxCryptor Classic with alternatives
Compare TrueCrypt and BoxCryptor Classic and decide which is most suitable for you.
Compare VeraCrypt and BoxCryptor Classic and decide which is most suitable for you.
Compare Cryptomator and BoxCryptor Classic and decide which is most suitable for you.