Great Downloader easy to use can convert into multiple file formats. Fast and impressive
Xmind - Xmind is a brainstorming and mind mapping application.
Video DownloadHelper - Browser extension to download videos from the Web
MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.
youtube-dl-gui - A cross platform front-end GUI of the popular youtube-dl written in wxPython.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Youtube Video and Audio Downloader - Download YouTube videos in all available formats and extract the original audio files.