BEMServer vs Honeywell Enterprise Buildings Integrator

BEMServer is an open-source platform for deploying a modular building energy management system. It gathers information from building management systems and sensors alongside weather, occupant feedback, building descriptions, and contextual data. The platform connects building hardware with data-oriented services, storing building models, time series, and events for access through documented REST APIs. Its data model follows IFC and Haystack standards. Processing modules interpret collected information to identify issues or inefficient operation and support recommendations and decisions. Listed modules cover fault detection and diagnosis, renewable energy simulation, energy management, load forecasting, indoor environmental quality, and visualization. The software is licensed under AGPL-3.0, and sellers using a modified version must publish their modifications under that license. There is no software license fee, although installation, configuration, maintenance, and selected modules may be paid services. The maker recommends help from someone with Python and Docker knowledge and says installation was tested on Debian 9. BEMServer currently supports building monitoring; other uses require extending its functionality.

Honeywell Enterprise Buildings Integrator (EBI) brings building management, fire and life safety, and security operations together for facility operators, supervisors, and managers. It combines real-time facility data with master systems integration, control tools, analytics, and geospatial map-based control across one or more properties. Alerts can reach designated people, and workflows can trigger procedures automatically. Honeywell lists native connections to Building Manager, Energy Manager, Security Manager, LifeSafety Manager, and Digital Video Manager. EBI also links with LenelS2 OnGuard to present alarms and events in one view; its API interface requires an OnGuard API license. Smartphone access is available through EasyMobile, with full-featured tablet access as well. The product supports standards including HTML5, BACnet AWS, OPC, Enterprise Web Services, ONVIF, and LonWorks, and is described as a distributed, fault-tolerant architecture. Deployment and licensing options include subscription and hosted installation, with cloud access available. Pricing is on request, and there is no free plan.