Is there any smart contract browser or explorer currently available? (i.e. a web browser-based tool where someone can easily audit the code held in the blockchain)
Baking Bad has released a smart contract explorer called "Better Call Dev". It offer a lot of useful functionalities, for example easy exploration of the state of the contract etc...
This question was asked before on reddit.
Here is an example of it: https://tzscan.io/KT1GgUJwMQoFayRYNwamRAYCvHBLzgorLoGo?default=code