As of 2015, ClassMates.com and Alumni.com allow users to create basic profiles and search for classmates for free. Results are limited to former classmates who also have profiles on the site. Other resources for finding classmates include popular social networking sites, such as Facebook, LinkedIn or MySpace.
Facebook and Myspace both allow users to list schools they formerly attended. Those looking to connect with former classmates can try searching for their school as well as looking for individual classmates by name. LinkedIn also allows users to list to their former schools, and since the site is network-based, one former classmate is likely to be connected to several others.