A growing family of focused tools for survey research, data collection, quality control, validation and reproducible survey workflows.
Explore toolsProject S: develops independent research tools designed around practical methodological and operational needs.
DE is a lightweight tool for straightforward manual data entry from paper questionnaires. It is designed for projects that need fast and reliable data capture without a validation-rule layer or advanced quality-control workflow, keeping setup and everyday operation simple.
DEVS is a dedicated environment for structured survey data entry, validation and quality control. It is designed for workflows in which data quality, operator monitoring, transparent validation rules and reproducibility matter.
QC is a diagnostic environment for evaluating survey data quality and internal and cross-survey coherence. It brings together complementary indicators and pattern-detection methods to identify unusual, inconsistent or potentially problematic structures in survey datasets and to support systematic quality assessment across studies.
Interviewer is a specialized environment for analysing interviewer behaviour, error patterns and interviewer-related variation in survey data. It supports the detection of unusual response and fieldwork patterns, assessment of interviewer effects, comparison of interviewer performance and systematic evaluation of data-collection quality.
Project S: is an umbrella for independent software tools supporting survey research. The project emphasizes transparent workflows, methodological quality and practical usability in research environments.
The Project S: family covers complementary stages of survey data workflows: DE supports straightforward manual data entry, DEVS adds validation and advanced quality-control workflows, QC focuses on multidimensional assessment of survey-data quality and coherence, and Interviewer provides dedicated tools for analysing interviewer behaviour, interviewer effects and fieldwork quality. Additional tools may be added as the project evolves.
