Kinovea - Kinovea is a video player for sport analysis
Slow Motion Camera - Slow Motion Camera is a video-editing app that allows you to edit your videos by changing their playback speed.
Video Coach - Video Coach is a tool that helps users analyze and improve their sports activities by recording videos of training and practice.
Slow Motion Video FX - Slow down your videos with a single click. Adjust speed, zoom in, slow down a certain part of your video. Even speed up. All online, no account required
PhysMo - PhysMo is an open-source (free!
Slow Motion Video Maker - Slow Motion Video Maker is an application that helps you edit your regular video both as fast and slow.