f-droid.org is a website and service that has FOSS (Free and Open Source Software) applications for Android devices. You can read more about f-droid but it is simply an alternative to Google Play for finding and installing applications.
The following list represents my "must have" applications on any linux desktop I use, be it RHEL at the office, Crunchbang on the work laptop, or Debian, LMDE, Ubuntu, etc. on various home computers.
I have used Mozilla's Prism (previously Webrunner and now Webrunner again) for years to create an run web pages as a desktop app but, unfortunately, Mozilla has discontinued Prism and handed the code over to an individual for any future development. Needless to say, development is slow if progressing at all and most distros (including Ubuntu) have removed Prism from the repos. This left me with a rather large gap in needed functionality so I did some research.