Bitcoin contracts are awesome. Yet, almost no wallet application allows creation of something more than just a pay-to-address- transaction. Meklebar aims to bridge this gap and allow creation of escrow transactions no matter what wallet app you use.
Meklebar is a fully client-side application. It does not store or transmit your private keys over the net. All signing and transaction making is done locally. The only things it uses the net for are transaction information retrieval and transaction pushing.
MIT.