Are We RTOS Yet?
The state of Real Time Operating Systems in Rust.
Status
We are RTOS!
Rust has several mature options for RTOS’ that are written entirely in rust (+ASM), and compile on the stable toolchain.
For more information about embedded rust check out The Embedded Rust Book.
Ecosystem
Some of these are not true RTOSs:
- Some are not real-time
- Some are more accurately described as execution frameworks instead of operating systems
| Name | Native Rust | Compiles on stable | License | Language(s) |
|---|---|---|---|---|
| Ariel OS | ✅ | ✅ | MIT OR Apache-2.0 | en |
| embassy | ✅ | ✅ | MIT OR Apache-2.0 | en |
| freertos | ❌ | Partial | MIT | en |
| hubris | ✅ | ❌ | MPL-2.0 | en |
| NuttX | ❌ | ✅ | Apache-2.0 | en |
| RIOT-OS | ❌ | ✅ | LGPL-2.1 | en |
| rt | ❌ | ✅ | Apache-2.0 | en |
| RTIC | ✅ | ✅ | MIT OR Apache-2.0 | en, ru |
| Tock | ✅ | Partial | MIT OR Apache-2.0 | en |
| Wasefire | ✅ | ❌ | Apache-2.0 | en |
| zephyr-project | ❌ | ✅ | Apache-2.0 | en |
Stats
| Name | Stars | Forks | Issues |
|---|---|---|---|
| Ariel OS |  |  |  |
| embassy |  |  |  |
| freertos |  |  |  |
| hubris |  |  |  |
| NuttX |  |  |  |
| RIOT-OS |  |  |  |
| rt | N/A | N/A | N/A |
| RTIC |  |  |  |
| Tock |  |  |  |
| Wasefire |  |  |  |
| zephyr-project |  |  |  |
Outdated projects
These projects are no longer actively maintained.
| Name | Native Rust | Compiles on stable | License | Language(s) |
|---|---|---|---|---|
| aerugo | ✅ | ❌ | MIT OR Apache-2.0 | en |
| bern | ✅ | ❌ | MIT | en |
| drone | ✅ | ❌ | MIT OR Apache-2.0 | en |
| lilos | ✅ | ✅ | MPL-2.0 | en |
| MnemOS | ✅ | ✅ | MIT OR Apache-2.0 | en |
| R3 | ✅ | ❌ | MIT OR Apache-2.0 | en |
| tornado | ✅ | ❌ | Apache-2.0 OR MulanPSL-2.0 | zh |
| zephyr | ❌ | ✅ | Apache-2.0 | en |
