The document introduces Normalization Process Theory (NPT), a conceptual model for evaluating the implementation and integration of new health technologies and complex interventions. NPT focuses on the work done by individuals and groups to embed interventions in practice. The NPT Toolkit provides managers, clinicians and researchers with a simplified framework based on NPT to assess implementation processes. It includes questions related to coherence, participation, action and appraisal, and allows users to gauge these implementation factors using a visual interface. The toolkit is meant as an aid for critical thinking, not a validated measurement instrument.