The Sustainable Services Initiative (SSI) – an undertaking of Welthungerhilfe in partnership with Aguaconsult, the German Toilet Organization (GTO) and Viva con Agua – has recently published Tools for Practitioners to strengthen WASH systems (or simply the SSI-Toolbox). The Toolbox is designed for country or field-based WASH practitioners seeking guidance and reference materials to understand and apply WASH systems strengthening approaches, without the need for country visits from international consultants or staff from headquarters. The toolbox is an interactive pdf that contains 21 two-page topic briefs on key systems strengthening concepts. Each topic brief explains why the topic is important to systems strengthening and provides practical guidance and tips as well as more than 100 links with one-click-access to relevant resources (tools, publications, powerpoints, videos, etc.) that provide further information.