|Image Source: https://www.eff.org/secure-messaging-scorecard|
- Telegram: Fails audited code--they've announced a hacking contest, though--and past communications are not secure if your encryption key is stolen. Otherwise, this ranks highly for me as a must-have app. While I have used TextSecure, it's not available for iOS, which means it's not an option (you may also want to read this paper on TextSecure via cryptome.org).
- Mailvelope: You may recall that this is an easy to use text/messaging encryption tool.
|Image Source: Minilock.io|
- AESCrypt.com - Free, open source and available for Mac, Windows, Linux and has an Android encryption tool.
- Minilock - From their web site: "miniLock uses your email and secret passphrase to generate a miniLock ID. miniLock IDs are small and easy to share online — anyone can use your ID to encrypt files to you, and you can encrypt files to friends using their miniLock IDs." It is quite easy to use, even on a Chromebook.
- Secret Space Encryptor - This features a java app and works on Android.
While I still use GPG/PGP, I have to admit that safeguarding a private key can be difficult and I much prefer using one of the 3 tools above.
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Everything posted on Miguel Guhlin's blogs/wikis are his personal opinion and do not necessarily represent the views of his employer(s) or its clients. Read Full Disclosure