Natron is a free open-source compositing software for Linux, Windows and Mac OS. It is released under GPLv2 license. It supports EXR, DPX, TIFF, PSD, SVG, RAW, JPG, PNG and more file formats. It supports OpenFX and many free and commercial OpenFX plugins like OpenFX-IO, OpenFX-Misc, OpenFX-Arena, OpenFX-OpenCV, OpenFX-Yadif deinterlacer, OpenFX-Vegas SDK samples, RevisionFX, NeatVideo denoiser, Furnace, KeyLight, GenArts Sapphire and Universe. You can use natron as a command-line tool.