Shake was so reliable and had such good math that I kept using it 5 years after it was discontinued. There's Gaffer[1], an open source lighting and compositing

Shake was so reliable and had such good math that I kept using it 5 years after it was discontinued. There's Gaffer[1], an open source lighting and compositing tool. Built at ImageEngine/Cinesite, but maintained under a BSD license. Not a Shake replacement tho. I'd say that Blender also has some graph-based compositing capabilities, but it's not the main intended use. [1] https://www.gafferhq.org/ https://www.gafferhq.org/