Cryptainer

BestCrypt Container Encryption

BestCrypt Container Encryption, made by Finnish security vendor Jetico, creates encrypted virtual containers that behave like normal drives or folders for storing sensitive files. It is built to protect data placed in cloud-sync folders such as Dropbox: because the container is encrypted before it syncs, the underlying cloud provider and anyone who compromises the cloud account only ever sees encrypted bytes. The product works across Windows, macOS, Linux, and Android, and includes a portable BCTraveller tool for accessing encrypted containers on machines without BestCrypt installed. Jetico has built encryption and secure-wiping software for over 30 years and markets BestCrypt alongside its BestCrypt Volume Encryption and data-wiping product lines for endpoint data protection.

VeraCrypt

VeraCrypt is a free, open-source disk encryption utility developed by IDRIX and based on the original TrueCrypt 7.1a codebase. It lets users create encrypted virtual disks (containers) that mount as real drives, encrypt entire partitions or storage devices such as USB drives, and even encrypt the system partition with pre-boot authentication, all using AES, Serpent, and Twofish ciphers individually or cascaded together. VeraCrypt strengthens TrueCrypt's original design by using far more key-derivation iterations (200,000 for system partitions versus TrueCrypt's 1,000), making brute-force attacks significantly harder, and it adds hidden volumes and hidden operating systems for plausible deniability. It runs on Windows, macOS, and Linux, and the source code is fully auditable, making it a favorite among security researchers and privacy-conscious users who need local, offline encryption without any cloud dependency.