Zammad
95 · HealthyTicketing and helpdesk system with email, chat, phone and social channels in one view.
4 open source projects replace Hiver, ranked by how safe each is to depend on.
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.
Ticketing system with SLAs, a customer portal, canned responses and a knowledge base, built on the Frappe framework.



Health and license are separate verdicts: a project can be well maintained and still not be open source.
| Project | Health | License | Stars |
|---|---|---|---|
| Zammad | 95 · Healthy | Free, share hosted changesAGPL-3.0 | 6.0k |
| Chatwoot | 89 · Healthy | Free core, paid extrasMIT | 38k |
| FreeScout | 76 · Stable | Free, share hosted changesAGPL-3.0 | 4.6k |
| Helpdesk | 76 · Stable | Free, share hosted changesAGPL-3.0 | 3.4k |
Hiver is a paid helpdesk & live chat product. See all open source helpdesk & live chat tools, ranked the same way.
Scores last refreshed from GitHub on 9 October 2026. How we score.