Great Downloader easy to use can convert into multiple file formats. Fast and impressive
match.color.io - Automatically match colors of any image or movie with ML
Video DownloadHelper - Browser extension to download videos from the Web
Image Colour Transfer - A free-to-use browser-based application that allows an image to be recoloured to match the colours of another image using novel methods.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Color Palette Generator - Enter the URL of an image and find its color palette
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.