I have built a real time analysis toolkit with a web front end, and just put a demo online. If you have 2 minutes to enter two strings and make six clicks, I would love the data point and promises to keep your high score up. The link is below:

MK Metrics

In the demo, you pick five stocks for a portfolio on a random day in the past with a random holding period. The system calculates the return and two financial metrics, alpha and beta, on the portfolio over the holding period. I hope it will prove a bit of fun as well as a demonstrator.

The analysis framework is written in C++ and the frontend is HTML5 and Javascript using websockets for communication.

Thanks for reading!