Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
PuTTY - Popular free terminal application. Mostly used as an SSH client.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
iTerm2 - A terminal emulator for macOS that does amazing things.