GPG Suite includes GPG for Mail, GPG Keychain, GPG Services, and MacGPG
GPG for Mail is an open source plugin for Apple Mail. Encrypt, decrypt, sign and verify mails using OpenPGP with a few simple clicks.
GPG Keychain is an open source application for Mac OS X. It allows you to manage your OpenPGP keys. Create and modify your keys and import the keys of your friends from a key server.
GPG Services is a plugin that brings GPG power to almost any application.
It allows you to encrypt/decrypt, sign/verify and import keys from text selections, files, folders and much more.
MacGPG is the underlying power engine of our GPG Suite. If you're familiar with the command line use the raw power of it.
Based on GnuPG 2.0.20.