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chat21-web-widget

The premium Open Source alternative to Crisp

🎯 Best for:Developers needing an embeddable, real-time chat UI.
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What is chat21-web-widget?

Replaces Intercom's frontend chat component. Leverages Firebase and MQTT for real-time, low-latency communication in web and mobile applications.

Tech Stack
TypeScriptBackend & Auth

Why chat21-web-widget?

  • • Firebase integration
  • • Low-latency MQTT
  • • Cross-platform support

Limitations

  • • Firebase dependency
  • • Limited out-of-box AI
  • • UI customization effort
1/31/2026
Last Update
86
Forks
38
Issues
MIT
License
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Competitor Cost
-$1,440
/ year (est. based on Crisp)
Self-Hosted
$0
/ year
Team Size10 Users
150+
Launch Detailed Calculator
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