TODO (Feel Free to add information, please indicate if it is Free Software or not and if it uses the recommended ~G~PGME and uiserver ~APIs of ~GnuPG) == Enigmail https://www.enigmail.net //a data encryption and decryption extension for Mozilla Thunderbird and the SeaMonkey internet suite that provides OpenPGP public key e-mail encryption and signing. // License: MPL 2, GNU GPL 2+ API: **no ~G~PGME**, **no UIServer** === gpg4usb http://www.gpg4usb.org seems to use ~GnuPG 1.4.x and Qt. //portable-application, which combines a simple text-editor with a GnuPG-frontend to write, encrypt and decrypt your text-messages and files.// API: Version 0.3.3 may still use ~G~P~GME. The TODO file aims for the use of its own kgpg connection. **no UIServer** === duplicity //Duplicity backs directories by producing encrypted tar-format volumes and uploading them to a remote or local file server.// [..] //uses GnuPG to encrypt and/or sign these archives// License GNU GPL v>=2. API: uses its own embedded gpginterface.py, process based, **does not use ~G~PGME**