Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
Adobe Premiere Pro - Edit video faster than ever before with the powerful, more connected Adobe Premiere® Pro CC.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Kdenlive - Free and open-source, full-featured video editor.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
iMovie - Turn your videos into movie magic.