WOT is a website reputation and review service that helps people make informed decisions about whether to trust a website or not. WOT is based on a unique crowdsourcing approach that collects ratings and reviews from a global community of millions of users who rate and comment on websites. WOT works in a very simple way – it shows website reputations as traffic lights next to search engine results or next to urls. By clicking the traffic light icons you can find out more information about a website’s reputation and other users’ opinions.

Today, WOT is the world’s leading crowdsourced website reputation service with over 140 million downloads worldwide and collaborates with the world’s leading Internet companies such as Facebook and the Mail.Ru Group. The WOT browser add-on works with all popular browsers.

The company was founded in 2006 by Sami Tolvanen and Timo Ala-Kleemola.