I have just “officially” released my Scoreoid cocos2d-x wrapper, the code can be downloaded from github:
ScoreoidX is a wrapper for using Scoreoid leaderboards in your project. The nice thing about Scoreoid is that the interface is using http/https calls and returns xml or json files. ScoreoidX uses rapidjson (included) to process the json results. As extra i have made a login/create player to link the scores to a specific device.
There is no need to install any additional sdks for Scoreoid.
Take a look at their website for more information and to register.