Did you know, that c:geo already offers a basic support of opencaching platforms:
Caches from USA (OU), Poland (OP) and UK (OK) can be opened and stored for offline using the search function as shown here.
More platforms and more functions will follow if their API and our programming allows.
Happy Caching !
Seems that entering the waypoint code is the only way to view an OCNA cache in c:geo, at this point, though.