Wikipedia is a free, online encyclopedia that was launched in 2001. While not a traditional search engine, Wikipedia offers a vast collection of information on a wide range of topics, making it a popular resource for users seeking answers to their questions. Wikipedia is maintained by a community of volunteers who write and edit articles on various subjects, with the aim of providing accurate and reliable information to users. The site contains over six million articles in English alone, covering topics such as history, science, art, and more. The Wikipedia search algorithm is designed to provide accurate and relevant results based on user queries, with search results displayed in a clear and organized manner. Users can also search for information within specific categories, such as biographies, geography, and more. One notable feature of Wikipedia is its multilingual support, with articles available in over 300 languages. Additionally, the Wikipedia articles are constantly updated and edited by its community of volunteers, ensuring that the information is accurate and up-to-date. While Wikipedia is not a traditional search engine, it provides a valuable resource for users seeking information on a wide range of topics.