Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
AutoHotkey - The ultimate automation scripting language for Windows.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Pulover’s Macro Creator - Pulover’s Macro Creator is a Free Automation Tool and Script Generator.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
AutoKey - A Python 3 port of AutoKey, the desktop automation utility for Linux and X11.