Agents United: An Open Platform for Multi-Agent Conversational Systems Beinema, Tessa Baños Legrán, Oresti Open source platform Multi-agent system Social conventional agents Coaching The authors would like to thank all students and researchers who have worked with various versions of the platform and who have provided valuable feedback for its development. This work was supported by the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 769553 (Council of Coaches). The Agents United Alliance is supported by the Personalised eHealth Technology programme of the University of Twente. The development of applications with intelligent virtual agents (IVA) often comes with integration of multiple complex components. In this article we present the Agents United Platform: an open source platform that researchers and developers can use as a starting point to setup their own multi-IVA applications. The new platform provides developers with a set of integrated components in a sense-remember-think-act architecture. Integrated components are a sensor framework, memory component, Topic Selection Engine, interaction manager (Flipper), two dialogue execution engines, and two behaviour realisers (ASAP and GRETA) of which the agents can seamlessly interact with each other. This article discusses the platform and its individual components. It also highlights some of the novelties that arise from the integration of components and elaborates on directions for future work. 2022-01-11T08:52:03Z 2022-01-11T08:52:03Z 2021-09-14 info:eu-repo/semantics/conferenceObject Beinema, T... [et al.] (2021, September). Agents United: An Open Platform for Multi-Agent Conversational Systems. In Proceedings of the 21st ACM International Conference on Intelligent Virtual Agents (pp. 17-24). [https://doi.org/10.1145/3472306.3478352] http://hdl.handle.net/10481/72300 10.1145/3472306.3478352 eng info:eu-repo/grantAgreement/EC/H2020/769553 http://creativecommons.org/licenses/by-nc/3.0/es/ info:eu-repo/semantics/openAccess Atribución-NoComercial 3.0 España Association for Computing Machinery