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Most likely the GUI wallet on their Github. Can be found on the site.
http://zclassic.org/

There are 3 to choose, I found a very informative source of info thru coinmarketcap > zclassic > social tab > reddit megathread with FAQ that had the top ten questions i wanted to ask in the top ten. https://coinmarketcap.com/currencies/zclassic/#social

The new wallet will be released on January 8, after a test.

I am using this wallet now and it is synchronizing, make sure you download the block-chain file to speed up the process.

Incase of "0 Connections" you might have to open a port on your router for the Wallet to sync. In my case, yesterday it was not connecting and was too lazy to access the router. Today I tried again and it connected without opening any ports, I don't know if it is related to today release date (Jan 8th) or I am just lucky, but it is working well.