At OutWit, we are working on adding intelligence to the Web browser.
The free beta applications that you have been downloading from our site are only parts of what we are developing. They are implementations of some of the recognition and extraction capacities that we are including in the OutWit Kernel. We have been talking about a public API for more than a year now and, although it is definitely still in the pipe, we have been delaying it (as for the complete help and documentation) until we can reach a stable enough version of the kernel and feel confortable with people starting to write code around it.
We are convinced that the future will prove it was a good idea to add semantic intelligence to the browser itself instead of exclusively focusing on the server side.