Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Video DownloadHelper - Browser extension to download videos from the Web
Big Photo - Overcome the image resolution limit on iOS devices
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.
Bandwidth Hero - Browser extension which saves data by compressing images