Chatwoot
Helpdesk & chatOpen-source live-chat, email support, omni-channel desk. An alternative to Intercom, Zendesk, Salesforce Service Cloud etc. 🔥💬
38k Custom / see repo Active
Replaces Zendesk 
Zammad
Replaces ZendeskZammad is a web based open source helpdesk/customer support system.
Stars6,025
LicenseAGPL-3.0
Last pushOct 21, 2026
Active
Forks1,079
Open issues + PRs472
LanguageRuby
GitHub topics:coffeescriptcustomer-carecustomer-supportgraphqlhelpdeskjavascriptrailsruby
Source: https://api.github.com/repos/zammad/zammad, fetched Oct 21, 2026. "Active" means a push within 30 days of that fetch. Maintainer? Claim or get featured.
Other Zendesk alternatives
Side-by-side comparison → 
Frappe Helpdesk
Helpdesk & chatModern, Streamlined, Free and Open Source Customer Service Software
3.4k AGPL-3.0 Active
Replaces Zendesk Related in Helpdesk & chat
FreeScout
Helpdesk & chatFreeScout — Free self-hosted omnichannel AI-powered helpdesk & shared mailbox
4.6k AGPL-3.0 Active
Replaces Help Scout