This is a showcase of larger open source projects used in the visual effects and animation industry. Several of them are contributed to by Disney engineers, but most people would not consider these Disney projects. Disney has open sourced and released some impressive open source projects over the years, and it's exciting to see their endorsement on these others.
Project: Originating and maintaining organization USD: Pixar OpenSubdiv: Pixar jss-api-gem: Pixar Munki: WDAS Reposado: WDAS SeExpr: WDAS Ptex: WDAS Partio: WDAS Dynamica: WDAS BRDF Explorer: WDAS OpenEXR: ILM Alembic: ILM and Sony Imageworks So which one of these is not a Disney project, considering they all originated from and are maintained by Disney engineers?
Sony gave it to ILM to start using, and then open-sourced it.
I'd quibble that while ILM and Pixar employees are technically now Disney employees, it's not as if they work for Walt Disney Animation Studios directly, so it's not as clear cut as you make out.