SoftWire was the precursor to TransGaming's SwiftAsm. SwiftAsm is an optimizing run-time x86 assembler that can be used as a JIT compiler back-end for scripting languages, or for dynamic code generation of efficient processing pipelines.
Drum machine compiler, generic music sequencer and mixer: Write or generate drum and tone patterns in a simple programming language. Mix it using the sample assembler (asampler). Renders to files or plays real-time. Very portable. Works on old hardware.