The original Nyancoin, running it's own blockchain since 3 January 2014. There are no tokens here.
AtomicDex is a lightweight wallet and decentralised exchange in a single application. The desktop Windows version supports Nyancoin (mobile versions do not yet).
It can be downloaded here: atomicdex.io
This is a BETA application, and is likely to change over time, and may not be 100% reliable.
Please download and install the Nyancoin software.
Links to exchanges, mining pools and more can be found here.