VLC player + global shortcut keys configuration
Freemake Audio Converter (Windows)
Sound Converter (Ubuntu)
Windows Media Player
Foxit PDF Reader
Firefox Flash Downloader: https://addons.mozilla.org/en-us/firefox/addon/flash-video-downloader-youtube/
Oxford Advanced Learner’s Dictionary - https://itunes.apple.com/us/app/oxford-advanced-learners-dictionary/id442911228
Mystery List - for checking learn by heart - https://itunes.apple.com/sa/app/mystery-list/id332296338?mt=8