Apps similar to Tella include VeraCrypt, which is free and open source. Other options are Cryptomator, TrueCrypt, Axcrypt and LUKS. There's no shortage of Disk Encryption Tools like Tella, with more than 50 alternatives for Windows, Mac, Linux, Android and iPhone.
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.
France
EU
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.
GermanyEU
[TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.]
United States
Offers robust file encryption with AES-256 for premium and AES-128 for free users, integrated password manager, intuitive interface, support for cloud storage, multilingual options, offline security, group management tools, and secure file deletion features.
SwedenEU
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.
AustriaEU
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.
United States
AstraCrypt - is a free, powerful and open-source encryption app that has everything you need to keep your data safe and secure.
Ukraine
Local-first password manager and secure digital vault for encrypted passwords, notes, files, passkeys, and recovery data.
United States
Native screen recorder for Mac and Windows with auto-zoom, segment recording, multilingual captions, and a one-time license.
Serbia
With EDS (Encrypted Data Store) you can store your files in the encrypted container to prevent unauthorized access to sensitive information.
Russia
An open-source system tray utility for Windows, giving you quick access to your GnuPG keyring at any time with the ability to encrypt, decrypt and sign files on the fly.
United Kingdom
United Arab Emirates
