Citizendium is an online encyclopedia that aims to improve upon traditional wikis by incorporating expert oversight. Founded in 2006 by Larry Sanger, a co-founder of Wikipedia, Citizendium encourages contributions from both experts and the general public, ensuring that articles are accurate and reliable. Unlike many other collaborative platforms, Citizendium requires contributors to use their real names and provides a system for expert authors to oversee content. This approach seeks to create a more trustworthy resource while maintaining the collaborative spirit of online knowledge sharing.