Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
Enlight Pixaloop - The animation app that lets you move still photos
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
PixaMotion - Make live photos, live wallpapers, moving Backgrounds & themes with animation effects.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
VIMAGE - Add moving effects and elements to your photos.