CrossOS

crossOS is a cross-platform operating system project envisioned to run across a broad range of hardware, including desktops, servers, embedded devices, and IoT sensors. The project seeks to provide a single, portable system image and toolchain that allows developers to write code once and deploy it on architectures such as x86-64, ARM64, and RISC-V. Emphasis is placed on portability, security, and a clean separation between userland and kernel services to simplify maintenance and deployment.

Design and architecture: The kernel is modular and oriented toward multi-architecture support, featuring a microkernel-inspired core that enables isolation of critical services, with loadable modules for drivers and device support. A unified application binary interface and a cross-platform runtime aim to ease porting, while the userland offers standard libraries and scripting environments. The system supports containerization and sandboxing to improve security and reliability across devices.

Tooling and ecosystem: crossOS ships with a cross-compilation toolchain, a package manager, and a build system designed to generate images for each target platform from a common source tree. It provides POSIX compatibility and optional extensions for runtime languages and WebAssembly, facilitating cross-device development and deployment. The project encourages open collaboration and publishes its source code under a permissive license.

Status and reception: As an ongoing project, crossOS remains experimental in many areas and is primarily developed by contributors in open-source communities. It has gained attention for its multi-architecture goals and emphasis on unified development workflows, though practical deployment in production environments is limited by software maturity and ecosystem size.