CURLHANDLE was created as a Cocoa wrapper around the curl library. It is a subclass of NSURLHandle (which is deprecated).
The code base has not been updated in quite a while. This is an attempt to bring it up to full Intel compatibility.
This is in the public domain (dual-licensed as New BSD since that's one of Google Code's choices), so you can use this for any project you wish!
There is a discussion group at Yahoo!.