Overview of background tasks
The GPG Suite updater checks for new versions.
The gpg-agent is a standard component that comes with GnuPG. It is responsible for caching your password.
Repairs GNUPGHOME folder if necessary.
If a user logs out gpg-agent will remain functional.
org.gpgtools.Libmacgpg.xpc is the interface between GPGMail and MacGPG2.
Each Mail.app version has a different UUID. That's a long number and bundles, which are supposed to run under that Mail.app version, needs to have that specific UUID. This patch integrates the latest UUID when you restart your system after an OS X update, so that GPGMail will still work afterwards.
Enable bundles makes sure, that bundles like GPGMail get loaded by Mail.app.