Before Cortana, Microsoft was working on another personal digital assistant, Louise, who surely created the foundation for a personal digital assistant. If you want to take a look at what Cortana looked like before she become the personal digital assistant who has a love for the World Cup, take a look at the video above.
The demo is quite old but we had not seen the videos before and though you might enjoy them too, show Louise running on Windows Phone 7. It's quite easy to see the comparisons between Cortana and Louise and shows how far Microsoft has come with its digital assistant.
We would hedge that Louise may have been a name that was in the running for the Windows Phone 8.1 variant of this application but we much prefer Cortana. The videos also show how long Microsoft had been working on this technology too. It's quite clear that they didn't set out to create a Siri competitor overnight as the roots for the project are much older than most of the public knows about.
It's cool to see the foundation that eventually lead to Cortana and more so, how far along the research project has come since it was first being tested.