Don't mistake this for the movie Alien - (1979 movie)
A tool to convert between package management types.
Mandatory for getting software working which does not have a maintainer for one's current distribution.
Given a YouTube or Vimeo URL, downloads the underlying video file, with a sensible file name. It downloads the highest resolution version of the video available: first it tries HD MP4, then regular MP4, then WebM, and finally FLV. It also works on playlists, and works as a bookmarklet[doesn't exist] to download the video you're watching.
Given a URL of a photo gallery, this downloads the largest versions of all of the photos.
Tested 2016-03-18 on Lubuntu - Tested and works for instagram, but I couldn't get proper filenames.