Encyclopedia - Compare
This is a tool that allows you to compare anime based on which people worked on it, and to compare people based on which anime they worked on. To use it, you simply have to navigate to the desired anime/person that you want to compare with others and click the "compare" link in the right menu to select it. Once you have selected two or more anime you will see the people they have in common. Similarly with people, once you have selected two or more you will see the anime they have in common.