Natron power

Natron is a free and open-source node-based compositing software. It has been influenced by digital compositing software such as Nuke, from which its user interface and many of its concepts are derived. Natron supports plugins following the OpenFX 1.4 API. Most open-source and commercial OpenFX plug-ins are supported. It offers robust and efficient tools for compositors to get their job done fast with high quality results.

32 bits floating point linear color processing pipeline.
Colorspace management handled by OpenColorIO.
Dozens of file formats supported: EXR, DPX, TIFF, PSD, SVG, RAW, JPG, PNG … and more.
Support for OpenFX v1.4

Support for many free and open-source OpenFX plugins:
OpenFX-IO : to read anything else than standard 8-bits images (bundled with pre-compiled versions of Natron).
OpenFX-Misc : A set of basic nodes, such as Transform, chroma keyer, etc… (bundled with the pre-compiled versions of Natron).
OpenFX-Arena : A set of extra nodes (bundled with the pre-compiled versions of Natron).
OpenFX-OpenCV : A set of plugins based on OpenCV.
OpenFX-Yadif deinterlacer : An open-source efficient de-interlacer.
OpenFX-Vegas SDK samples
OpenFX samples (in the Support and Examples directories)

Support for commercial OpenFX plugins:
RevisionFX products
NeatVideo denoiser
Furnace by The Foundry
KeyLight by The Foundry
GenArts Sapphire
Other GenArts products
Universe by Red Giant Software
Ignite by HitFilm
And many more.

Do you want to view this power? View this usefule tutorial that explain a simple chroma key nodes.

Natron, believe it or not, it’s free. the Initial release was on October 22, 2014 and now it’r really mature software, basically for VFX but also for motion graphics and other purpose. Check the documentation here and the Natron website.