Pipeling, persistent connection in HTTP 1.0, 1.1

Hi all,

I'm looking for software (for example browser), programme or ways. I would
like to enable, disable
options in HTTP protocol when I send request 'get', 'post' etc...

- enable, disable pipeling in HTTP 1.1
- enable HTTP 1.1 or HTTP 1.0 (or earlier)
- enable, disable persistent connection in HTTP 1.0 (keep-alive) and in HTTP
1.1
- can  use 1,2,3..10...etc TCP sesions in HTTP 1.0 and 1.1

Do you know softwares where this options are possible? Maybe I can change
options in Internet Explorer, Netscape, Opera etc? Maybe you know websites,
links...

I would be really gratefull.
Thanks for help...