Is free software developed by the World Bank. It supports questionnaire design with a full range of standard questions, nesting, cascading and linked questions. It supports validation of answers and direction of interview flow using .Net; use macros, calculated variables and lookup tables to construct sophisticated data validation algorithms. It enables collection of data offline on tablets (CAPI), online using web-interface (CAWI), from phone interviews (CATI), and conduct of mixed-mode surveys. It can scan barcodes, capture pictures and audio, and record information from external sensors. It facilitates collection of detailed GIS information on locations, distances, and areas, application of geofencing and guidance of interviewers to the point of interview offline using high-resolution satellite images and built-in GPS receivers.