Embeddable RTOS stable
Zephyr RTOS
Modern RTOS for connected, resource-constrained devices
11.0K stars
100 contributors
Since 2016
Modern RTOS for connected, resource-constrained devices
License
Apache-2.0
Min RAM
1 MB
Min CPUs
1 core
Scaling
single_node
Complexity
expert
Performance
medium
Self-hostable
✓
K8s native
✕
Offline
✓
Pricing
fully free
Docs quality
good
Vendor lock-in
none
Use cases
- ✓ Connected IoT devices with BLE/WiFi
- ✓ Wearable device firmware
- ✓ Smart home sensors
- ✓ Industrial IoT gateways
Anti-patterns / when NOT to use
- ✕ Steeper learning curve than FreeRTOS
- ✕ Build system (west/CMake) can be complex
- ✕ Large codebase
Compare with alternatives
Replaces / alternatives to
Technical specs
Language
C
API type
SDK
Protocols
HTTP
Deployment
source
Community
GitHub stars 11.0K
Contributors 100
Commit frequency weekly
Plugin ecosystem none
Backing Linux Foundation
Funding foundation
Release
Latest version
— Last release —
Since 2016
Best fit
Team size
solosmallmedium
Industries
iotautomotivewearablesindustrial