Wikipedia
WarpOS was a multi-tasking kernel for the PowerPC architecture developed by Haage & Partner for the Amiga computer platform in the late 1990s and early 2000s. It ran on PowerUP accelerator boards developed by phase5 which contained both a Motorola 68000 family CPU and a PowerPC CPU with shared address space. WarpOS ran alongside the 68k-based AmigaOS, which could use the PowerPC as a coprocessor. Despite its name, it is not an operating system (OS), but a kernel; it supplies a limited set of functions similar to those in AmigaOS for using the PowerPC. When released its original name was WarpUP, but was changed to reflect its greater feature set, and possibly to avoid comparison with its competitor, PowerUP.
It was developed by Sam Jordan using 680x0 and PowerPC assembler. It was distributed free of charge.