OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...
Youtube Trimmer - Youtube Trimmer is a robust and free-to-use online tool that is helping you out to trim YouTube videos up to any certain length.
Synfig Studio - Just another WordPress site
YT Cutter - YT Cutter is a free-to-use online tool that is making your life easy in cutting the videos to any length with high quality.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Typito YouTube Cutter - Typito YouTube Cutter is an intelligent free to use software that has been doing the tricks for you in making long videos into short clips via using editing tools.