>
>
> Darkcoin
>> Zerocash (which will work with bitcoin or other non-anonymous 'basecoin'
>> as described in the zerocash site)
>>
> The other one that is missing is the crypto-currencies based on the
> CryptoNote technology, using ring signatures to provide input anonymity.
> See such instantiations as ByteCoin, Monero, etc.
>
>
interesting post on hacker news by gmaxwell (NullC)

https://news.ycombinator.com/item?id=7765455

he compares bytecoin (the alt from which monero has been forked) and
zerocash.

a lot of useful info could be found here too (ann thread for zerocash
whitepaper):

https://bitcointalk.org/index.php?topic=615514.0