Castlefile is described as 'CastleFile is an innovative file encryption tool that uses chess moves as unique keys for secure, client-side file encryption. It uses the SHA-256 hashing algorithm and AES encryption to ensure top-notch data protection, combining chess with cryptography' and is a file encryption software in the security & privacy category. There are more than 25 alternatives to Castlefile, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best Castlefile alternative is VeraCrypt, which is both free and Open Source. Other great sites and apps similar to Castlefile are Cryptomator, TrueCrypt, Picocrypt and DroidFS.
Ensure your data's security by encrypting entire partitions, storage devices, or system drives with VeraCrypt. Benefit from transparent and automatic real-time encryption, hardware acceleration on modern processors, and robust security algorithms that are resistant to brute-force attacks.
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Cryptomator provides transparent, client-side encryption for your cloud. Protect your documents from unauthorized access. Cryptomator is free and open source software, so you can rest assured there are no backdoors.
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[TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.]
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Picocrypt is a very small (hence Pico), very simple, yet very secure encryption tool that you can use to protect your files. It's designed to be the go-to tool for encryption, with a focus on security, simplicity, and reliability.
DroidFS is an alternative way to use encrypted overlay filesystems on Android that uses its own internal file explorer instead of mounting virtual volumes. It currently works with gocryptfs and CryFS.
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LUKS is the standard for Linux hard disk encryption. By providing a standard on-disk-format, it does not only facilitate compatibility among distributions, but also provides secure management of multiple user passwords.
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Picocrypt NG (new generation) is a very small (hence Pico), very simple, yet very secure encryption tool that you can use to protect your files. It's designed to be the go-to tool for file encryption, with a focus on security, simplicity, and reliability.
zuluCrypt is a free hard drives encryption, supports PLAIN dm-crypt, LUKS, TrueCrypt, VeraCrypt, and Microsoft’s BitLocker volumes. Currently Linux only.
BitLocker Drive Encryption is a data protection feature that integrates with the operating system and addresses the threats of data theft or exposure from lost, stolen, or inappropriately decommissioned computers.
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Arcanum is built directly on VeraCrypt's cryptographic C sources — the same AES, XTS, PBKDF2, and cascade cipher implementations used in the desktop application. Containers created in Arcanum open in VeraCrypt on desktop and vice versa, with no conversion or export needed.
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