A free, open source Uxn emulator for Windows 95, 98, NT4, 2000, XP, Vista, 7, 8, 10, 11, Wine, and ReactOS. Build it with any C compiler, even on Linux.
A C99 version of the ORCΛ esoteric live programming environment and language. Includes a terminal-based IDE, IO with MIDI/OSC/UDP, time-travel debugging environment with multiple undo, and a no-dependencies core virtual machine which can easily be embedded into other software.