The most commonly used interface for allocPSA is the web interface, which is accessible from your web browser. Additionally there is an email interface that can be used to perform certain functions in alloc - usually by planting specific keywords in the subject line.
Finally, there is also a command line interface for alloc, alloc-cli.
alloc-cli can be invoked by running:
./alloc <option-here>
For a list of options, run:
./alloc --help
alloc-cli is under the GNU Affero General Public License. For more info please see the LICENSE file or visit the GNU Affero General Public License webpage.