Technically it's not a broker. Spotware, the guys behind cTrader, have an open API, (Spotware Connect) that gives you access to any account you have linked to your cTID, which can be from any broker that supports cTrader (IC Markets, FxPro, Pepperstone and Tradersway to name a few).

I've got a decent chunk of the work done through a blob of Qt code for the API and Python for the OAuth server but where to put the OAuth server has me wondering if this will work out.