MTGOX WRAPPER:
Written in C#, very simple wrapper around v0 and v1 HTTP API. Sorry, streaming API (Socket.io) not yet implemented. This will change shortly!
GitHub (Git):
https://github.com/br00t999/MtGox-Trading-API-WrapperCodePlex (TFS, Mercurial, SVN):
https://mtgoxwrapper.codeplex.com/TRADEHILL WRAPPER:
Written in C#, very simple wrapper around TradeHill HTTP API.
GitHub (Git):
https://github.com/br00t999/TradeHill-Trading-API-WrapperCodePlex (TFS, Mercurial, SVN):
https://tradehillwrapper.codeplex.com/Hope someone finds this helpful!
Coming soon: CAVirtex, CryptoX, Intersango, BTC-e