Anonymantis is a set of PHP scripts that allows your users to report bugs that go straight into your Mantis bug tracker, without ever having to allow them any access to the tracker itself. Anonymantis uses the MantisConnect SOAP web services via NuSOAP (which is PHP-based). We recommend you run the Mantis tracker and the Anonymantis scripts off the same server to prevent as much web service related overhead as possible.
CocoaMC is a Cocoa framework for interfacing with MantisConnect, a set of SOAP web services for the Mantis Bug Tracker. In its current form, CocoaMC is really nothing more than a direct set of Objective-C stubs for the web services (via the CoreServices framework). There has been plans to revamp this into a new "BugServices" framework, but the project has been put on hold for the time being.
CURLHandle is a nice little Cocoa framework that effectively wraps libcurl in a nice objective-c fashion. Unfortunately, the source code has not yet been "universalized" and released, along with the CURLHandle.framework and CURLHandleTester projects both not being "true" (i.e. not fully) XCode projects (they used Jam to build). We figured it'd be helpful, so here they are, source code and all. CURLHandle.framework in a universal binary form, as well as CURLHandle.framework in a new Xcode project, along with CURLHandleTester. Enjoy! :)
The Omni Group provides a set of frameworks for the benefit of the community, but unfortunately, they're only available in source form (and somewhat poorly documented). We've posted a universal build of the OmniFrameworks for posterity's sake here.