Tool For Constructing HTTP Requests

Question

I'm looking for the best tool that allows me to construct my own http requests. Like the firefox addon poster.

Any suggestions. I'm looking at doing some security testing on webservices.

Thanks

Answer 1

Tamper Data
Apache JMeter

Answer 2

soapUI is great for testing web services.

Answer 3

Fiddler2 is the best tool I know of for that kind of work .. massive amount of features for scripting building requests, as well as storing sessions for later analysis.

Answer 4

cURL is a nice command-line tool.

Answer 5

WebScarab from the Open Web Application Security Project.