Razer Synapse 2.0 is not compulsory software to get your Razer peripherals working—but it is advisable if you want to get the best out of them." … Even if you never create a Synapse 2.0 account, you can still configure a Razer mouse, it seems.

It depends on what functionality you assign to the keys. While the mouse is able to store most keybinds, macros, multimedia controls on its memory. A lot of Synapse functionality can’t be performed by the mouse on its own, and still requires Synapse to be running.

By using Razer Synapse 2.0 (“Synapse”), the Subscriber agrees that Razer may collect aggregate information, individual information, and personally identifiable information. Razer may share aggregate information and individual information with other parties.

Razer Cortex has tested clean. We used 23 different antivirus applications. The antivirus programs we used to test this file indicated that it is free of malware, spyware, trojans, worms or other types of viruses.

We will collect and process all or some of the following Personal Information about you: (a) Information you provide to us. Personal Information that you provide to us, such as when using the contact form on our website, including your name, email address, and other contact details; (b) Our correspondence.

Distinguished. Razer Synapse is the most absurd piece of bloatware I’ve tripped over in a very long time.

Razer Cortex turns off background applications that may make your computer run a little bit slower (almost noticeable).

You don’t need Synapse for using Deathadder. It’s just good to have because you’ll be able to configure it. But you can use it without Synapse if you would like to, just like any other mouse.

Sharing within the Razer group: We may share your Personal Information within the Razer group, including locations outside of the European Economic Area where we do business, for marketing purposes, for legal and regulatory purposes, to manage credit risk and other business risks, to perform analytics, to ensure we …

As per Razer’s privacy policy, its software (Synapse) is SPYWARE and a KEYLOGGER.