I recently used the "rest-client" gem for a pet project of mine (https://github.com/YellowApple/tldrb, if anyone's curious). Works quite well for simple use cases.

I've had a lot of success with `curb` gem.

It is used to run thousands of tests, via a local monitoring system we built:

https://projects.bytemark.co.uk/projects/custodian/wiki

httparty!