Great Downloader easy to use can convert into multiple file formats. Fast and impressive
GeeksPhone - Electronics and iOS
Video DownloadHelper - Browser extension to download videos from the Web
BlackPhone - Silent Circle is a secure communications firm offering enterprise communications solutions including software, devices, and services.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
Media Atelier - Create invoices and estimates on your Mac
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.