During my time at Stanford, I started a company called Quixplore with my friend Nic in the CS department. We spent over a year improving the product and building a company.
Quixplore is a shared social calendar for your friends and followers. Our goal was to give people and organizations a single place to share their plans and ideas for things to do. We found that most people email and text to share these things with friends, so we built a platform that leverages location and time to make both sharing and discovery a more intuitive process.
We are not currently devoting any time to developing Quixplore, but it's a space I am still very passionate about and possibly interested in for future projects or collaborations.