Agreed, many VFX graphics programs are node based - two more would be Nuke and Katana from The Foundry. Natron would be an open source clone of Nuke, similar t

Agreed, many VFX graphics programs are node based - two more would be Nuke and Katana from The Foundry. Natron would be an open source clone of Nuke, similar to how Gaffer is essentially an open source clone of Katana