SloPro - Shoot video at a high speed then play it back in 1000 FPS slow motion.
Kinovea - Kinovea is a video player for sport analysis
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 Editor - Slow Motion Video Editor is an application through which you can slow down the motions of your usual video.
LongoMatch - Real-time and post-recording sports video analysis software.