Toolsley PGPigeon is described as 'PGPigeon is a simple but powerful OpenPGP -compatible message encryption webapp based on the openpgp.js library' and is a file encryption software in the security & privacy category. There are more than 10 alternatives to Toolsley PGPigeon for a variety of platforms, including Windows, Linux, Mac, OpenPGP and GnuPG apps. The best Toolsley PGPigeon alternative is GnuPG, which is both free and Open Source. Other great apps like Toolsley PGPigeon are GPG4Win, Kleopatra, Lock GnuPG and GPGTools.
Autocrypt is a set of guidelines for developers to achieve convenient end-to-end-encryption of e-mails. It specifies how e-mail programs negotiate encryption capabilities using regular e-mails.
