Currently it comes with the following main features:
- Programming language independent D-Bus interface, which allows to write clients in several languages
- Transaction based design which allows to queue actions
- The daemon runs only if required (D-Bus activation)
- Fine grained privilege management using PolicyKit, e.g. allowing all desktop user to query for updates without entering a password
- Support for media changes during installation from DVD/CDROM
- Support for debconf (Debian's package configuration system)
- Support for attaching a terminal to the underlying dpkg call
- Command line client aptdcon
- Python GTK widgets to monitor and control a running transaction

Aptdaemon was inspired by PackageKit which doesn't allow a tight integration into Debian/Ubuntu by policy: Running transaction are not allowed to be paused. This makes the use of debconf or resolving config file conflicts impossible.

The documentation can be found at the home page.