Amoeba 5.3 is now available (free to universities).

Amoeba 5.3 is a microkernel-based, high performance, distributed operating system. It runs on MicroSPARCs, Intel i80x86 PCs (including the Pentium and Pentium Pro) and various MC680x0 systems. For exact details of the supported hardware see the System Administration Guide.

The manuals are freely available at the sites listed below.