Adobe After Effects, Camtasia, Blender, NUKE, Alight Motion, HitFilm Pro, Apple Motion, Autodesk Smoke, Liconcomp, Hitfilm Express, PixelConduit, MagicaCSG, picoCAD, Cavalry, EmberGen, RenderJuice, Type Studio, ButtleOFX, KenShape, Snowmix, Shotbrander, Blackmagic Design Fusion, NukeX, Easy Video Maker, PixelConduit Complete, Jahshaka are some alternatives to Natron.