Recoverit
Powerful and easy-to-use data recovery software for both Windows and Mac computers.
iOS Toolkit contains various useful tools for iPhone, iPad, including iOS Data Recovery, iOS Data Transfer, iOS System Repair, iOS Data Backup & Restore, iOS Data Eraser, iOS Screen Unlock, and so on.
HandBrake is a free, cross-platform video transcoder to convert video from nearly any format to a selection of modern, widely supported codecs.
UniConverter is an audio, video editing and converting software with many extra & useful tools, such as screen recorder, video downloader, DVD burner, DVD ripper, DVD converter, video compressor, image converter, GIF maker, video metadata fixer, VR converter, CD burner, etc.
LosslessCut is the swiss army knife of lossless video/audio editing for Windows, Mac and Linux. Its free and open source.