What is the best open-source alternative to Zendesk?

The best open-source alternative to Zendesk depends on the use case. The highest-PopScore candidates on GitPop are chatwoot, freescout.

Is Zendesk open source?

No, Zendesk is a closed-source product by Zendesk, Inc.. The open-source alternatives on this page are listed by GitPop PopScore (momentum, activity, and noise-filtered).

2 candidates

Open source alternatives to Zendesk

Customer support helpdesk with ticketing, knowledge base, and live chat. · Zendesk, Inc.

Pricing: Free trial; paid from $19/agent/mo

Zendesk and Intercom are the default helpdesks for SaaS companies. The open-source alternative in 2026 is to self-host Chatwoot (modern, multi-channel), FreeScout (lightweight helpdesk), or osTicket (mature, traditional). Chatwoot is the most direct Zendesk replacement; FreeScout is the right pick for small teams that want a tiny PHP-based helpdesk.

The 2 candidates, ranked by PopScore

#01chatwoot/chatwoot
Open-source customer support suite. The most direct Zendesk replacement in 2026, with multi-channel inbox, automations, and a self-hostable edition.
GitHub
#02freescout-help-desk/freescout
Lightweight self-hosted helpdesk. The right pick for small teams that want a tiny PHP-based Zendesk alternative.
GitHub

Related alternatives

Looking for a side-by-side comparison of two open-source projects? The compare matrix has 60+ "X vs Y" pages. Looking for a curated "best of" list for a specific category? See Best AI tools 2026 (and the 7 other category editions).