GLPI vs Zammad
GLPI and Zammad are both help desk software. GLPI is open source under GPL-3.0, with 6.5k GitHub stars. Zammad is open source under AGPL-3.0, with 6k GitHub stars.
Which to pick
- Pick GLPI when
- An IT department wants a free, self-hosted helpdesk and asset register and is comfortable with a PHP application.
- Pick Zammad when
- A support team wants a mature, self-hostable alternative to Zendesk or Freshdesk.
Side by side
IT asset management and ITIL service desk in one: inventory of computers and software, licences, contracts, tickets, changes and a knowledge base.
A web helpdesk that gathers email, chat, phone, social and form requests into tickets with SLAs, a knowledge base and reporting.
Configuration is deep and the interface takes training; some plugins and hosted options are sold by Teclib.
Self-hosting needs Rails, PostgreSQL, Redis and Elasticsearch; the paid hosted service is the easier path.
Production-ready (both)
Self-hosted server and cloud service (both)
PHP, Symfony, Vue and MySQL
Ruby, Rails, Vue, PostgreSQL, Redis and Elasticsearch
Open source, GPL-3.0 (strong copyleft)
Open source, AGPL-3.0 (network copyleft)
Use inside your business is unrestricted, but anything you distribute that includes it must be released under the same license.
Use inside your business is unrestricted. If you change it and let customers use it over the internet, you must publish your changes.
6.5k GitHub stars
6k GitHub stars
Established: started 11 years ago, latest release 12.0.1.
Established: started 14 years ago, no tagged release yet.
Other comparisons
More help desk and ticketing software
Both sides were judged on 2026-11-03 from each project's README and GitHub data. License, age and popularity lines are worked out directly.