TERESAH (Tools E-Registry for E-Social science, Arts and Humanities) is a cross-community tools knowledge registry aimed at researchers in the Social Sciences and Humanities (SSH). It aims to provide an authoritative listing of the software tools currently in use in those domains, and to allow their users to make transparent the methods and applications behind them.

TERESAH has been developed as part of the Data Service Infrastructure for the Social Sciences and Humanities (DASISH), a Seventh Framework Programme funded project. DASISH collaborates with the five ESFRI Infrastructures in the field of Social Science and Humanities (CESSDA, CLARIN, DARIAH, ESS, and SHARE). The tools and knowledge registry is aimed at researchers from all disciplines and sectors, research infrastructure builders and users, as well as IT personnel. It includes information about tools, services, methodologies, and current standards and makes use of existing social media for dissemination and discussions.

TERESAH has been further developed by the HaS (Humanities at Scale) project WP8.

Partners who has initially contributed to TERESAH include King's College London, Swedish National Data Service, Finnish Social Science Data Archive, University of Tartu, Universitat Pompeu Fabra and CentERdata. And later, within the Humanities at Scale project were DARIAH-ERIC and Göttingen State and University library.