An information processing system includes a first web server and a second web server that communicate with each other via a browser, wherein the first web server includes a first web page generating unit, and a first communicating unit, the second web server includes a second web page generating unit, and a second communicating unit, the first web server allows the browser to execute a first script, in which state the browser functions as a web page acquiring unit, a first data input/output control unit, and a first server communication control unit, the second web server allows the browser to execute a second script, in which state the browser functions as the second data input/output control unit, and a second server communication control unit, and the first web server and the second web server transmit and receive data to and from the opposite server via the browser.