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Introduction: Following Mass Casualty Incidents (MCIs), the sudden surge in demand for essential services disrupts the balance between available and required resources. This study aimed to systematically identify and categorize existing systems employed for dispatching professional or lay rescuers during emergencies., Methods: Adhering to the PRISMA 2020 Checklist, the research scrutinized international databases (PubMed, Scopus, and Web of Science) using formulated search strategies. Additionally, a manual search was conducted on Google Scholar and prominent journals employing specific keywords. Original articles introducing systems for dispatching rescuers to incident sites were included., Results: Thirty-one of the 23051 initially identified documents were included for data extraction and quality assessment. The comprehensive analysis revealed twenty-two dispatch systems worldwide, contributing to life-saving efforts in emergencies. Additionally, an evaluation of the articles' quality using the Mixed Methods Appraisal Tool (MMAT) with five scores, indicated that more than two-thirds of the identified articles scored four or higher. Summarizing the data extracted from these systems, four distinct categories of recall system characteristics were identified: general, dispatcher, responder, and other features., Conclusion: Technology has the potential to revolutionize the delivery of healthcare services. This study highlights four key elements necessary for the development of dispatch systems that can effectively mobilize healthcare providers to the incident scene. These elements include general characteristics, dispatcher roles, responder requirements, and additional features, which equip researchers with the knowledge for designing effective systems to recall healthcare providers during MCI., Competing Interests: The authors declare no conflict of interest.