LibreCrypt is described as '(formerly DoxBox) is an open-source disk encryption for Windows and the successor of FreeOTFE' and is a Disk Encryption tool in the security & privacy category. There are more than 50 alternatives to LibreCrypt for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best LibreCrypt alternative is VeraCrypt, which is both free and Open Source. Other great apps like LibreCrypt are TrueCrypt, DroidFS, LUKS and Windows BitLocker.
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.
[TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.]
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.
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.
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.
Not open source. Proven vulnerabilities.
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.
Seaborg Vault is a desktop application for Windows and Linux that lets you encrypt and decrypt files using multiple algorithms including AES-256 and ChaCha20, scan files for hidden metadata, securely delete files so they cannot be recovered, generate strong passwords, and create...
Tella is a mobile app designed to protect human rights defenders, advocates, and journalists by encrypting and hiding their sensitive data and safely uploading it to their organization's server.
Encrypto lets you encrypt files before sending them to friends or coworkers. Just drop a file into Encrypto, set a password, and then send it however you normally would — but this time with added security. It’s free for both Mac and Windows.
A simple right-click, you can encrypt files in seconds - without any prior technical knowledge.
With EDS (Encrypted Data Store) you can store your files in the encrypted container to prevent unauthorized access to sensitive information.
FreeOTFE is a free, open source, "on-the-fly" (OTFE) disk encryption program for PCs running MS Windows and Windows Mobile PDAs (FreeOTFE4PDA).
Discontinued per Wikipedia page (https://en.wikipedia.org/wiki/FreeOTFE)
Although discontinued, will work on older versions of Windows. Basis of all current OTFE Windows programs. Primary issues were disappearance of developer, lack of signed drivers.
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DroidFS isn't OTFE encryption.