Zammad
94 · HealthyTicketing and helpdesk system with email, chat, phone and social channels in one view.
Directory / Helpdesk & live chat
Support ticketing, shared inboxes and customer chat. Ranked by health score.
Ticketing and helpdesk system with email, chat, phone and social channels in one view.
Omnichannel customer support inbox covering website chat, email, WhatsApp and social channels.
Shared-inbox helpdesk in PHP, close in spirit to Help Scout, extended through modules.
Veteran PHP support-ticket system that routes inquiries from email, web forms and phone.
Live chat widget and support inbox built with Elixir and React.



Health and license are separate verdicts: a project can be well maintained and still not be open source.
| Project | Health | License | Stars |
|---|---|---|---|
| Zammad | 94 · Healthy | AGPL-3.0 | 6.0k |
| Chatwoot | 89 · Healthy | Open source (permissive) | 38k |
| FreeScout | 76 · Stable | AGPL-3.0 | 4.6k |
| osTicket | 54 · Caution | GPL-2.0 | 4.0k |
| Papercups | 15 · At risk | MIT | 6.1k |
Alternatives to FreshdeskAlternatives to Help ScoutAlternatives to IntercomAlternatives to Zendesk
Scores refresh nightly from GitHub. How we score.