The following institutions actively participate in Text+ by contributing their specialist expertise to the initiative and by providing and using research data. All institutions have specified their particular contribution in Letters of Commitment.
- Academy of Sciences and Humanities in Hamburg
- Academy of Sciences and Literature, Mainz
- Bavarian Academy of Sciences and Humanities
- German Literature Archive Marbach
- German National Academy of Sciences Leopoldina, Halle (Saale)
- Gesellschaft für wissenschaftliche Datenverarbeitung mbH Göttingen
- Göttingen Academy of Sciences and Humanities
- Heidelberg Academy of Sciences and Humanities
- Herzog August Library Wolfenbüttel
- Jülich Supercomputing Centre
- Klassik Stiftung Weimar
- Ludwig-Maximilians-University Munich
- Max Weber Foundation, Bonn
- Saarland University
- Salomon Ludwig Steinheim Institute of German-Jewish Studies, Essen
- Saxon Academy of Sciences and Humanities, Leipzig
- Technical University Dresden, Centre for Information Services and High Performance Computing
- Technical University of Darmstadt
- University and State Library Darmstadt
- University of Applied Sciences Darmstadt
- University of Bamberg
- University of Cologne
- University of Duisburg-Essen
- University of Freiburg
- University of Hamburg
- University of Paderborn
- University of Trier
- University of Tübingen
- University of Würzburg