Wikimanche is a collaborative online encyclopedia dedicated to the Manche department in France, showcasing its rich history, culture, traditions, and notable personalities. Its purpose is to provide a freely reusable, objective, and verifiable content platform, allowing users to contribute by creating or editing articles once they register and comply with the community guidelines. Established in 2007, Wikimanche has grown significantly, currently boasting over 33,719 articles, including 11,295 biographical notices and a comprehensive dictionary of 11,254 words related to the region.

In addition, it features thousands of illustrations and maps that enhance the user experience. Celebrated for its contribution to citizen media, Wikimanche received the Trophée de la fibre 2024. The site successfully attracted 847,761 visitors in 2025, marking its best viewership to date.

Wikimanche not only serves as a knowledge repository but also hosts events and exhibitions, fostering a sense of community and promoting the cultural heritage of the Manche