An open source CSE Middleware for Education.

Version 2025.11

This oneM2M compliant CSE implements a subset of the oneM2M standard (see http://www.onem2m.org). The intention is to provide an easy to install, extensible, and easy to use and maintainable CSE for educational purposes.

See https://acmecse.net for more exhaustive information.

Please see the Changelog and this discussion for a detailed list of changes.

• Support for Mcc' registrations and announcements accross service provider domains.
• Support for notification target removal.
• Zookeeper support for distributed CSE deployments.
• New management API for easier CSE management.
• Support for MQTT over WebSockets.
• Many other improvements and bug fixes, but also breaking changes.
  Please see the discussion for details.

See the announcement in the discussions.

Many People have contributed to this project and helped to make it what it is today with their ideas, suggestions, and code. Please see the Acknowledgements for the list of contributors.

Join the ACME CSE community on Discord to discuss the project, ask questions, and get help.

BSD 3-Clause License for the CSE and its native components and modules. Please see the individual licenses of the used third-party components.