Finance is a website via which users can view stocks prices and perform immaginary buying and selling procedures.
This project is an educational project, presented by CS50 as a week problem (CS50 is an introductory course to computer science). The website itself is fun to play with, and can give the user an opportunity to try his/her hand in stocks trading.
The link above is the staff solution of the problem, which means that it's not built by the code in this repository. But there's no major diffrence between the two.