IFAIK, @agriggio is a fan of my work and the log tone mapping is essentially dt’s filmic with a simplified UI.
Filmic Blender and Filmic OCIO are actually a collection of fixed LUTs that are produced with an algo very similar to dt’s one. They come from Troy Sobotka, who has been my pen buddy for 1.5 year. darktable filmic is very much the same, but with a parametric UI instead of the pre-computed LUTs.