im_service
The premium Open Source alternative to Sendbird
🎯 Best for:Adding chat to apps without SaaS fees.
What is im_service?
Replaces expensive real-time chat APIs with a lightweight Golang-based WebSocket server. Handles high-concurrency message routing, offline storage, and group chat logic without external SaaS dependencies.
Tech Stack
GoBackend & Auth
Why im_service?
- • High concurrency (Go)
- • Horizontal scaling
- • Low latency
Limitations
- • No built-in UI kit
- • Requires DB maintenance
- • Documentation gaps
1/5/2026
Last Update
609
Forks
4
Issues
GPL-2.0
License
Financial Leak Detected
Stop the "SaaS Tax"
Your team could be burning cash. Switching to im_service instantly boosts your runway.
Competitor Cost
-$1,440
/ year (est. based on Sendbird)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%