Now you made me look it up. It's called Synapse 2 and when I bought (and subsequently returned) a Razer Naga Hex in September last year it was the only way to configure the mouse. Specifically, you needed it to configure the keyboard emulation keys for the thumb buttons. It did require a registration and login. The excuse for this was some "store your settings in The Cloud" bollocks which I had absolutely no use for - I just wanted to configure my fancy mouse.

You can find it at http://www.razerzone.com/synapse2 and the tech specs there state that "Valid e-mail, software download, license acceptance, and internet connection needed to activate full features and for software updates." For a bloody mouse driver.

Yup, if you want to get to the Razer specific settings you need to log in. I wanted to turn the led in the mouse off, since it heated my hand and was annoying. Login was required and the servers were down. Razer never again, even though an offline mode has now been added.

http://www.techdirt.com/articles/20121105/17594020942/when-m...

The new one (Synapse 2.0) does require a login. I don't think it's required though.