No need to pay, we (Twilio) are now actively maintaining it and going to be adding some new features. Common templates exists (not documented) yet. You can put values in URL parameters and the fields will autopopulate effectively giving you URL-based templates. Responses are already saved, click the permalink to get back to them later.
If you have any other feedback items, feel free to post them here or on https://github.com/twilio/hurl and we'll take a look at them. Pull requests are even better.
Had no clue this was open source. Wonderful.
Have you considered using something like Charles Proxy[1] instead?
There is some FOSS alternative if I recall correctly but I forgot the name. I think it was written in Java.
The Cocoa-specific app looks interesting, but I think the Java-based alternative you were referencing was Paros[1]?
CocoaRestClient? http://code.google.com/p/cocoa-rest-client/
Paros?
I have not. Brilliant link. Thank you!
If you're on OS X, I sell one for $2 on the Mac App Store - http://www.uresk.net/httpclient/. I'm working on a major update, and I'd be interested in hearing some more details about the features that would make a tool like this useful to you.
If you (or anyone else on HN) want to check it out but don't want to shell out a few bucks for it, send me an email (<my username>@gmail.com) and I'll get you a coupon code for a free copy.
Fiddler is a very useful HTTP proxy debugger for Windows.
Have you tried Firefox's Poster Addon? It's absolutely brilliant for simulating HTTP requests
For specific APIs, apigee have a great tool: http://apigee.com/about/products/free
A hurl.it along those lines would be very useful.
It's been an absolutely indispensable tools for debugging (crazy) API's while developing https://zapier.com.