I’m the creator of Zbay and it supports Tor. I haven’t tested it on Windows recently but it should work fine! These instructions assume you can get tor running locally:
If you’re using TorBrowser you’ll want to change the port to 9150 and it might be a good idea to avoid using TorBrowser while zcash is running.
Feel free to DM me, here or in Zbay, if you have any questions.
Also, be sure to verify that Tor is connected and working before registering a username in Zbay, as this will send a transaction to the network.