One RTOS. From Simulation to Silicon.
LightOS is a modern C++20 real-time operating system for silicon validation and embedded firmware. Boot in microseconds, not milliseconds.
Why LightOS?
Validation-First
Near-instant boot for RTL simulation. Run tests in thousands of cycles, not millions. Simulation time-aware tick system.
Production-Ready
ISO 26262 ASIL-D safety features. Secure boot with TrustZone. Same codebase from prototype to production.
Developer-Friendly
Modern C++20, header-only option. 1810 unit tests passing. Rust FFI bindings. Comprehensive documentation.
Choose Your Path
ðŽ Silicon Validation
"I'm validating silicon"
Run firmware tests on RTL simulation in thousands of cycles. Near-instant boot means more test iterations per regression.
Learn More â⥠Embedded Firmware
"I'm building embedded firmware"
Modern C++20 API with RAII, type safety, and zero-cost abstractions. From prototype to production with one codebase.
Get Started âð Evaluating Options
"I'm comparing RTOS platforms"
See how LightOS compares to FreeRTOS, Zephyr, and ThreadX on boot time, memory footprint, and features.
Compare âArchitecture Support
| Architecture | Status | Features |
|---|---|---|
| ARM Cortex-R52 | â Hardware Verified | EL1/EL2, GICv3, MPU, SMP, Gang/Work-stealing |
| ARM Cortex-A53 | â QEMU Tested | MMU, Kernel/User isolation, Syscalls |
| RISC-V RV64GC | â QEMU Tested | CLINT, PLIC, SMP support |
| RISC-V RV32IMC | â QEMU Tested | Embedded targets |
Ready to Get Started?
Request an evaluation license or schedule a demo to see LightOS in action.