KasselWiki is a dedicated online platform focused on the historical and cultural aspects of Kassel and its surrounding areas. Compiled by Werner Guth, the platform serves as a repository for less-known and oft-overlooked information related to the city’s rich traditions and history. While not designed to be a comprehensive encyclopedia like the Regiowiki established by HNA, KasselWiki aims to spotlight localized initiatives, curiosities, and unique elements of Kassel’s heritage.

The content includes various topics such as the city's historical development, town plans, significant landmarks, parks, and social life. Additionally, it encompasses elements of local culture, including dialects, notable figures, and military history related to Hessen-Cassel. Written in traditional German spelling, KasselWiki provides visitors with a glimpse into the fascinating tapestry that makes up Kassel's identity. With its focus on preserving the lesser-known narratives, KasselWiki stands as a vibrant resource for both residents and historians eager to explore the city’s cultural landscape.