OpenNMT is a full-featured, open-source neural machine translation framework designed to enable efficient and customizable translation models. Launched by the Harvard NLP group and SYSTRAN, it has grown into a vibrant community project that supports both research and production needs. The platform offers tools that cater to beginners as well as advanced users, giving them the power to train, configure, and deploy high-quality translation models. Supported by a robust ecosystem that includes pre-trained models and extensive documentation, OpenNMT is a comprehensive solution for anyone looking to integrate translation capabilities into their applications.