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Desktop Sharing
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Video Conferencing
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Handbrake - Great open source converter software. Still not sure how to convert MKV with subtitles to M4V yet. This thread might help.
Video Downloader - Instead of installing suspiscious software use a website service like KeepVid.
To Do
Update Kitty to at minimal change font colour for blue which is too dark. Consider other things too included in this article, http://dag.wieers.com/blog/improving-putty-settings-on-windows