S.S.E. File Encryptor is described as 'Cross-platform encrypter/decrypter of files and folders' and is an app in the security & privacy category. There are more than 50 alternatives to S.S.E. File Encryptor for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best S.S.E. File Encryptor alternative is VeraCrypt, which is both free and Open Source. Other great apps like S.S.E. File Encryptor are Cryptomator, TrueCrypt, Picocrypt and LUKS.
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.
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.
Cryptomator gears up toward cloud encryption, while S.S.E is for local encryption.
[TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.]
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.
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.
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 only works with gocryptfs but support for CryFS could be added in the future.
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.
Easily encrypt files with user-friendly software using the powerful AES standard for security on Windows, macOS, and Linux, featuring robust 256-bit encryption for safeguarding sensitive data from unauthorized access, ideal for secure data storage, email transmission, and internet uploads.
AstraCrypt - is a free, powerful and open-source encryption app that has everything you need to keep your data safe and secure.
Multron File Guardian - A File Encrypter/Decrypter With Many Encryption Algorithm.
A simple right-click, you can encrypt files in seconds - without any prior technical knowledge.
zuluCrypt is a free hard drives encryption, supports PLAIN dm-crypt, LUKS, TrueCrypt, VeraCrypt, and Microsoft’s BitLocker volumes. Currently Linux only.
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Easy to use, open source, strong cryptography, works on Mac, Windows, Linux. Excellent project. And it's free.