[wandersandwich]

https://research.dreamworks.com/open-source-projects/

In particular look at OpenVDB (volume database). It is a wide and shallow volume format designed for performance around certain use cases. It also includes good lib support for the common simulation functions.

A lot of the other open source offerings from the animation/vfx studios are about common formats and pipelines and may be of less interest outside of the industry.

[florabuzzword]

I think you’re right. I should have specified formats and pipeline components. There are business reasons to not open source these things, but it couldn’t hurt to ask.

OpenVDB was a crucial step. It’s hard to live without it these days.