HaderslevWiki is a user-driven digital encyclopedia dedicated to documenting the history and current developments of Haderslev Municipality. Launched in April 1899, it serves as a comprehensive resource for individuals seeking detailed articles and insights into a wide array of topics, including notable figures, organizations, places, events, trades, culture, and leisure activities within the region. The platform is managed by Historie Haderslev and encourages community participation, inviting locals to contribute their unique stories, events, and insights related to their schools, shops, streets, or homes.

Whether users want to write new articles or seek assistance from the Historical Archives, HaderslevWiki aims to foster historical engagement and preservation. Additionally, it features articles highlighting significant historical correspondence, such as letters from historical figures, keeping the community connected to its rich heritage. Thus, HaderslevWiki stands as an essential tool for those interested in exploring and contributing to the narrative of Haderslev's past and present