coinmarketcap has an option to filter out pre-mined and non mineable, a
   diff of the main list and this one would make a great start for a list
   [1]https://coinmarketcap.com/views/filter-non-mineable-and-premined/
   As far as i know these are the ones that aren't just a bitcoin fork:
   Ripple
   NXT
   Mastercoin
   Ethereum
   Coinffeine
   MAIDsafe
   Smartcoin
   Protoshares
   If you're starting a google doc spreadsheet, I'd be willing to help, pm
   me with an invite

   On Tue, Jun 24, 2014 at 4:02 PM, grarpamp <[2]grarpamp@gmail.com>
   wrote:

     Any links to a list of digital currencies organized by technology?
     ie: Bitcoin has countless forks characterized by nothing more
     than adjusting (or not) the operating parameters of the
     [3]bitcoin.org
     code and starting their own genesis. Others may swap out the
     hash or crypto functions within that. While useful to list them
     all under the aforesaid parent technology 'Bitcoin', they are all
     ultimately uninteresting and a waste of time to research.
     A real list would group all the digital currencies by genuine
     differences
     in architecture... those archs thus resulting in their suitability
     to different
     applications, capabilities to anonymity, features for
     centralization/regulation,
     etc.
     So now you might have
     Bitcoin
     Paypal, Linden
     Some other various coin designs
     Currencies that pass serialized 'banknotes' around

References

   1. https://coinmarketcap.com/views/filter-non-mineable-and-premined/
   2. mailto:grarpamp@gmail.com
   3. http://bitcoin.org/