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Open Source Customer Communication Platforms using CSS

A curated collection of the best open source platforms for managing communication with customers across multiple channels. using CSS.

Novu

Multi-channel notification infrastructure for apps

  • Stars

    40,173

  • Last commit

    17 hours ago

  • License

    Unknown
Open-source platform for building in-app, email, push, SMS, and chat notifications with a unified API, workflow engine, and embeddable inbox component.

Open Source Alternative to:

Customer.io

Fonoster

Open-source cloud communications platform for developers

  • Stars

    8,142

  • Last commit

    9 hours ago

  • License

    MIT
Build and deploy powerful voice and messaging applications with ease using Fonoster's flexible, scalable, and developer-friendly platform.

Open Source Alternative to:

Twilio

Plunk

The open-source, affordable email platform

  • Stars

    5,529

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Plunk unifies marketing, transactional, and broadcast emails into a single, complete solution for businesses of all sizes.

Open Source Alternative to:

Resend

Zammad

Powerful helpdesk solution for streamlined customer service

  • Stars

    6,019

  • Last commit

    6 hours ago

  • License

    AGPL-3.0
Zammad is an open-source helpdesk software that centralizes customer communications and helps deliver great service experiences efficiently.

Open Source Alternative to:

LiveChat

Erxes

Open-source growth platform for customer-centric teams

  • Stars

    4,092

  • Last commit

    6 hours ago

  • License

    AGPL-3.0
All-in-one solution for marketing, sales, and customer service. Boost engagement, streamline workflows, and drive growth.

Open Source Alternative to:

Salesforce

Frappe Helpdesk

Open-source ticketing system for streamlined support

  • Stars

    3,436

  • Last commit

    1 day ago

  • License

    AGPL-3.0
Frappe Helpdesk consolidates customer issues, automates workflows, and empowers self-service to boost agent productivity and customer satisfaction.

Open Source Alternative to:

LiveChat

Dittofeed

Open-source customer engagement platform for automation

  • Stars

    3,014

  • Last commit

    8 days ago

  • License

    MIT
Dittofeed offers low-code tools for message automation across multiple channels, including powerful segmentation and personalization features.

Open Source Alternative to:

Mailchimp

Chaskiq

Open-source customer communication platform

  • Stars

    3,574

  • Last commit

    4 months ago

  • License

    Unknown
Versatile messaging solution for businesses to engage customers through multiple channels, with AI-powered automation and analytics.

Open Source Alternative to:

LiveChat

Cossistant

AI
AI-native support infrastructure for modern SaaS

  • Stars

    737

  • Last commit

    1 month ago

  • License

    AGPL-3.0
Open-source support platform combining AI and human agents. React components with shadcn/ui design philosophy, styled with Tailwind CSS for NextJS apps.

Open Source Alternative to:

LiveChat

Wraps

Code-first email platform that deploys to your AWS

  • Stars

    64

  • Last commit

    23 hours ago

  • License

    AGPL-3.0
Build email templates as React components and automations in TypeScript. Deploy to your AWS account with SES integration. Marketing teams edit content without code.

Open Source Alternative to:

Resend

Tiledesk

AI
No-code platform to build AI agents and automate support

  • Stars

    15

  • Last commit

    22 hours ago

  • License

    MIT
Build AI chatbots, automate customer support workflows, and connect live agents across web, WhatsApp, email, and voice with a no-code visual designer.

Open Source Alternative to:

Intercom
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