Top Open Source Customer Communication Platforms Tools in 2026
A curated collection of the 15 best free and open-source Customer Communication Platforms tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
Zammad
Open-source helpdesk & customer support system
Stars5,871Last commit10d agoLicenseAGPL-3.0
Chatwoot
Open-source customer support platform with AI agents
Stars36,252Last commit10d agoLicenseOpen Source
Wraps
Self-hosted email platform for Amazon SES
Stars56Last commit11d agoLicenseOpen SourceuseSend
Open source email platform for everyone
Stars4,641Last commit14d agoLicenseAGPL-3.0
Plunk
Open-source transactional email platform
Stars5,397Last commit13d agoLicenseAGPL-3.0
Tiledesk
Open-source no-code AI chatbot platform
Stars14Last commit12d agoLicenseMIT
Sendune
No-code dashboard for AWS SES email management
Stars2,303Last commit3mo agoLicenseMITNovu
Open-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.
Stars39,678Last commit10d agoLicenseOpen Source
Freescout
Open source Zendesk & Help Scout alternative
Stars4,508Last commit13d agoLicenseAGPL-3.0Frappe Helpdesk
Frappe Helpdesk consolidates customer issues, automates workflows, and empowers self-service to boost agent productivity and customer satisfaction.
Stars3,341Last commit17d agoLicenseAGPL-3.0Fonoster
Build and deploy powerful voice and messaging applications with ease using Fonoster's flexible, scalable, and developer-friendly platform.
Stars8,082Last commit12d agoLicenseMIT
Erxes
AI-native experience operating system for modern businesses
Stars4,075Last commit10d agoLicenseOpen Source
Dittofeed
Open-source customer engagement platform
Stars2,914Last commit5mo agoLicenseMIT
Cossistant
AI agent customer support for SaaS in under 10 lines of code
Stars715Last commit1mo agoLicenseAGPL-3.0
Chaskiq
Open source messaging platform for marketing, support & sales
Stars3,561Last commit2mo agoLicenseOpen Source
