I need some tool to view HTTP requests

Question

It's probably some browser extension or a proxy.

For example, I open google.com, and type something and press 'Search'. And I want to see all params of http-request (like, method, domain, params etc).

Answer 1

Fiddler2

It will show all the HTTP requests leaving your computer. Covering all the browsers, and all the other applications.

Answer 2

If you're using Firefox, HttpFox is excellent for this. Can inspect all GET/POST content, headers etc.