BEMServer vs Tridium Niagara Framework

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.

Tridium Niagara Framework is software infrastructure connecting devices and operational data with people and systems managing workflows in buildings, data centers, industrial processes, and smart cities. Built-in tools cover control logic, data management, user presentation, histories, schedules, and alarms, including HVAC, lighting, environmental monitoring, and access integration. Niagara Supervisor provides browser access to alarms, logs, graphics, schedules, and configuration data. It includes multiple open-protocol IP drivers; other drivers may be purchased separately. Security features include hashed passwords, TLS communications, certificate-based authentication, and a Security Dashboard. Niagara Cloud Suite adds remote access, station-data recovery, and API access to semantically enriched data stored with Microsoft Azure. It requires a supported framework version and an active Software Maintenance Agreement. Initial Supervisor licensing also requires an SMA, which is needed for the latest Niagara version. Tridium reports more than one million instances across hundreds of thousands of projects. Pricing is on request.