Open-source Trengo alternatives

Chatwoot is an open-source, self-hostable customer support platform that gathers all customer conversations into one inbox. It is presented as an alternative to Intercom, Zendesk and Salesforce Service Cloud, and aims to give businesses control over their customer data while managing conversations across channels.

The shared inbox takes in website live chat, email, SMS and messaging channels such as Facebook, Instagram, Twitter, WhatsApp, Telegram and Line. An AI agent called Captain automates replies to common questions to reduce agent workload, and a built-in Help Center portal lets you publish articles and FAQs so customers can find answers themselves. Collaboration tools include private notes with mentions, labels, canned responses, auto-assignment based on availability, custom views and filters, a command bar and multi-language support.

Chatwoot is built with Ruby on Rails and Vue and can be run with Docker, with deployment guides on its help center. The repository license is listed as 'Other', so confirm which parts are open source. A hosted cloud version is also available for teams that prefer not to maintain their own server.

Zammad is a browser-based helpdesk and customer support platform. Support teams use it to manage inquiries that arrive through email, chat, telephone and social media channels in a single ticket system, so conversations stay organized and the whole team can see what is happening.

The README stresses that the software is and will stay open source under the GNU AGPLv3. Ownership of the source code sits with the Zammad Foundation, an entity separate from commercial providers like Zammad GmbH, the company whose team does much of the development. The technology stack includes Ruby on Rails, GraphQL, TypeScript and Vue.

You can self-host Zammad on your own servers or buy hosting and support from the company behind it. It suits customer support, IT helpdesk and service teams that want an open-source ticketing system with multichannel support and control over where their data lives.

FreeScout is a compact open-source help desk and shared inbox written in PHP on the Laravel framework. It lets support teams handle customer emails and conversations together, with tickets, shared mailboxes and an omnichannel approach, while keeping data on their own servers rather than in a vendor's cloud.

The README presents it as a free self-hosted alternative to Zendesk and Help Scout, developed from scratch without using any copyrighted material from either product. Its table of contents points to a demo, a feature list, mobile apps and system requirements, and the tagline mentions AI-powered assistance. Repository topics also name osTicket as a comparison point.

FreeScout is licensed under AGPL-3.0. Some optional add-on modules are sold separately by the project. It suits small and medium businesses, agencies and nonprofits that want a capable help desk without per-agent subscription fees and with full control over their data.

DeskcommCRM is an open-source sales CRM aimed at businesses that sell through chat, especially WhatsApp. It combines contact and deal management with AI agents that answer customers, qualify leads and help sell, running on your own server instead of a monthly subscription. The project presents itself as an open alternative to Kommo, Octadesk and Intercom.

WhatsApp connectivity uses WAHA, and the stack is TypeScript with Next.js and Supabase. Topics highlight retrieval-augmented generation, MCP readiness, multi-tenant architecture, LGPD data protection compliance for Brazil, and an integration with the Nuvemshop store platform. A hosting partnership produced a setup kit that installs the whole stack on a VPS with a single command. Documentation is available in Portuguese, English and Spanish.

The project is MIT-licensed, with no paid feature gating stated in the README. It suits small businesses, agencies and e-commerce sellers, particularly in Brazil, that run sales and support through WhatsApp.

Libredesk is an open-source customer support platform that you host yourself and run as one binary. It brings email, a live chat widget for your website, and WhatsApp conversations (connected through the Meta Cloud API) into a shared inbox, and positions itself as a lightweight alternative to Zendesk, Intercom, and Chatwoot. It is released under the AGPL-3.0 license.

Teams can organize conversations with tags, custom statuses and attributes, snoozing, and search. Automations tag, assign, and route conversations by rules, macros apply saved replies and actions in a single step, and auto-assignment distributes work by agent capacity. SLA management warns about conversations at risk of missing targets, and CSAT ratings and analytics track response times and resolution rates.

A multilingual help center publishes a searchable knowledge base, an AI assistant can answer chat questions from it and hand off to an agent, and an agent copilot drafts replies and summarizes threads. Roles with per-action permissions, OIDC single sign-on, activity logs, an API, and webhooks cover administration. It is written in Go and Vue and suits small and mid-sized support teams.

wacrm is a CRM template built around WhatsApp that you can fork, brand, and host yourself. It is built with Next.js and TypeScript and uses Supabase for its backend, according to its topics. The repository is the product itself, while the marketing site and self-hosting documentation live in a separate repository. It is released under the MIT license.

Out of the box it provides a shared inbox on the official WhatsApp Business API, so several agents can work one number with per-conversation assignment, status, and notes. Contacts support tags, custom fields, CSV import, and deduplication. Sales pipelines are shown as Kanban boards with deals linked to conversations, broadcasts use Meta-approved templates with delivery and read tracking and per-recipient variables, and no-code automations trigger on inbound messages.

The project is young, created in 2026, and relies on the WhatsApp Business platform, so using it requires access to the API and compliance with Meta's rules. It suits small businesses, agencies, and developers who want a white-label WhatsApp CRM base.