Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
LightShot - The fastest way to take a customizable screenshot.