Tilck is a tiny Linux-compatible kernel written in C that runs on x86 architecture with support for both legacy BIOS and UEFI boot methods.
The project addresses the challenge of creating a minimal yet functional operating system kernel that maintains compatibility with Linux standards and POSIX interfaces. Tilck achieves this by implementing core kernel functionality in C with assembly where necessary, supporting essential features like ACPI for hardware abstraction, bare-metal execution, and bootloader integration. The kernel is designed to be small enough for embedded systems while remaining capable enough to run real applications through its Linux compatibility layer.
Tilck suits developers interested in kernel development, embedded systems, or educational exploration of operating system internals. It is particularly valuable for those who want to understand how a kernel works without the complexity of a full-scale system like the Linux kernel itself. The project's focus on being tiny makes it appropriate for resource-constrained environments where a traditional kernel would be impractical, while its Linux compatibility ensures that existing tools and applications can run with minimal modification.
The project shows sustained development activity with regular commits addressing both core functionality and bug fixes. Work spans multiple areas including bootloader improvements, kernel subsystems, and hardware support expansion. The codebase receives ongoing refinement with attention to code quality and architectural decisions. Development maintains focus on the stated goals of minimalism and compatibility rather than feature proliferation, with changes carefully considered for their impact on the kernel's size and performance characteristics.
