Since 2010, the Wittgenstein Archives at the University Bergen (WAB, Alois Pichler) and the Centre for Information and Language Processing at the Ludwig-Maximilians University Munich (CIS, Max Hadersbeck et al.) cooperate in the research group the “Wittgenstein Advanced Search Tools” (WAST). The WAST research group develops the web-frontend FinderApp WiTTFind together with specialized search tools for scholars in the humanities to investigate WAB’s transcriptions of the Nachlass of Ludwig Wittgenstein with advanced computational search tools. Their FinderApp WiTTFind (http://wittfind.cis.lmu.de) displays facsimile-extracts on the hit-page and allows double-sided paging through the facsimile with its WiTTReader Application. In our paper, we want to present the research work around the FinderApp WiTTFind, the WiTTReader, and our latest developments within WAST, the synonym-lexicon and the similarity search tools.