Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Winx Hd Video Converter Deluxe - Winx Hd Video Converter Deluxe is a feature-rich solution that uses the full power of GPU cores to perform the conversion in True HD or 4K quality.
Video DownloadHelper - Browser extension to download videos from the Web
Tipard Video Converter - Tipard Video Converter is a robust tool that you can use to convert video of all major formats without compromising on its quality.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
ImTOO Video Converter - Convert among AVI, MPEG, MP4, WMV, FLV, MKV, MOV, DivX, AVCHD, TS, HD video formats with high quality. Support 3D conversion, and video cut/Split/Join/Edit!
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.