Natron is described as 'Open source, cross platform nodal compositing application. It is built around industry standard open source tech such as OpenFX, OpenEXR, OpenColorIO and OpenImageIO. The feature set includes realtime playback/RAM cache, multi-threaded rendering, 2d tracking' and is a very popular VFX software in the photos & graphics category. There are more than 10 alternatives to Natron for a variety of platforms, including Mac, Windows, Linux, Flathub and PortableApps.com apps. The best Natron alternative is Blender, which is both free and Open Source. Other great apps like Natron are Shotcut, Adobe After Effects, Camtasia and Blackmagic Design Fusion.
Natron alternatives are mainly VFX Software, but if you're looking for
Video Editors or Motion Graphics Software you can filter on that. These are just examples - use the filter bar below to find more specific alternatives to Natron.
We can use Blender for compositing too.