Comment by justinfrankel

I'm not sure why, either... but since we're here: REAPER is very programmable which might appeal to readers of this site. Specifically:

ReaScript: can program high level UIs/project manipulation/etc in Lua or EEL2

JSFX: can write realtime signal processors in EEL2

Video: can write/edit video FX in EEL2 (a ton of included presets are there which can be tweaked on the fly)