Unixskallet

Unixskallet is a Unix-like operating environment designed around a modular, shell-centric user experience. It encompasses a kernel, system libraries, and a collection of userland tools intended to be portable across hardware platforms while maintaining a consistent POSIX-compatible interface.

Its architecture emphasizes a small, auditable core and a modular userland, with the shell acting as the primary interaction point. The project aims for simplicity, reproducibility, and scriptability, enabling predictable automation and easy experimentation with kernel and userland subsystems.

Development has been community-driven, with releases that focus on stability, adherence to POSIX standards, and incremental improvements to kernel modularity and driver support. The project maintains a portable toolchain and build system to support cross-compilation.

Core components include a modular kernel, the Unixskallet shell (a POSIX-compatible command interpreter with extended scripting features), core libraries, and a suite of standard utilities. It supports standard filesystems and a POSIX I/O model. Optional features include container-like isolation, basic virtualization, and a microkernel-like separation of services, depending on the port.

Usage and reception: Primarily used in research, education, and hobbyist experimentation; appreciated for its emphasis on scriptability and reproducibility, but it's a niche project with limited hardware support and a smaller ecosystem of third-party software. Availability and compatibility vary by port; official documentation and source code repositories are maintained by the community.