lib.reviews is a web-based platform for writing reviews about anything. It was started in 2016 by Erik Moeller with the goal of creating a free and open platform focusing on high quality, trustworthy reviews available under free licenses. As of August 2018 the database contains more than 800 reviews. Registration to the website is not open, and requires an invitation from other users.
Users of the platform can organize their work by joining thematic groups called "teams". Each team focus on reviewing a particular category of things. Some examples are the "F-droid reviews" team for reviewing apps on the f-droid app store, the "Esperanto" team for writing reviews in the Esperanto language, and the "Gamebooks" team for reviewing anything related to gamebooks.