# Zephyr RTOS Reviews
**Vendor:** The Linux Foundation  
**Category:** [IoT Operating Systems](https://www.g2.com/categories/iot-operating-systems)
## About Zephyr RTOS
The Zephyr Project is a Linux Foundation hosted Collaboration Project. It’s an open source collaborative effort uniting developers and users in building a best-in-class small, scalable, real-time operating system (RTOS) optimized for resource-constrained devices, across multiple architectures.






- [View Zephyr RTOS pricing details and edition comparison](https://www.g2.com/products/zephyr-rtos/reviews?section=pricing&secure%5Bexpires_at%5D=2026-06-15+11%3A03%3A13+-0500&secure%5Bsession_id%5D=3df7cff4-388e-41e2-968d-e999bf5c379f&secure%5Btoken%5D=a0811409f8183eedae2f7ee375cf87f6587794307deeb4004cd74294f58b8b15&format=llm_user)

## Zephyr RTOS Features
**Security**
- Access Controls
- Network Security
- Compliance
- Cryptography

## Top Zephyr RTOS Alternatives
  - [Ubuntu](https://www.g2.com/products/ubuntu/reviews) - 4.5/5.0 (2,340 reviews)
  - [Red Hat Enterprise Linux](https://www.g2.com/products/red-hat-enterprise-linux/reviews) - 4.6/5.0 (931 reviews)
  - [Tizen](https://www.g2.com/products/tizen/reviews) - 3.8/5.0 (59 reviews)