Best open-source alternatives to Zendesk

Chatwoot is a self-hosted customer support platform aimed at businesses that want a centralized inbox for customer conversations. It positions itself as an open-source alternative to products like Intercom and Zendesk, and it is designed to help teams handle support at scale while retaining control over customer data. The platform combines omnichannel messaging, a help center, collaboration tools, and reporting in one system. It supports channels such as website chat, email, and multiple social or messaging services, while also offering features like assignments, canned responses, labels, automation, and team workflows. The README also highlights Captain, an AI agent intended to automate routine support interactions and reduce agent workload.

Zammad is a web-based helpdesk and customer support platform designed to help teams manage customer inquiries in one place. It is aimed at organizations that handle requests across multiple communication channels and want a centralized system for support operations rather than scattered email threads or ad hoc coordination. The README presents Zammad as open source software under GNU AGPLv3 and notes that it is developed by Zammad GmbH together with the community. It can be obtained through source code, Docker images, Helm charts for Kubernetes, and packaged DEB/RPM downloads. The project also points users to official documentation, screenshots, and a REST API for integration, while highlighting a hosted cloud service as an easier operating option.

FreeScout is an open source help desk and shared inbox application intended as a self-hosted alternative to Zendesk and Help Scout. It is built with PHP and the Laravel framework, and is designed for organizations that want a lightweight customer support system they can run themselves while keeping data under their own control. The project emphasizes broad usability and deployment flexibility. The README highlights mobile-friendly access, multilingual support, email integration, conversation management tools, notifications, and accessibility features. It also points to mobile apps, official and community modules, and external integrations such as an API, Zapier, and Make, suggesting a platform that can be extended for support teams and administrators.

Peppermint is a ticket management system aimed at helpdesks and service desks that need a straightforward way to handle internal staff and customer requests. It presents itself as a lightweight, easy-to-use product with a simple workflow and a responsive interface that scales from mobile devices to large screens. The project includes core support features such as ticket creation, markdown-based editing, file uploads, client history tracking, and a notebook area with todo lists. It is designed for self-hosted deployment and provides a Docker-based setup, plus a one-line installer for Ubuntu and Debian. The README also points users to official documentation and notes default login credentials for the initial setup.