🏢 Facility Management, Asset Handover & Digital Twins

Autodesk Tandem is a cloud digital twin platform launched in 2021. Owners and their consultants load Revit or IFC models, apply a facility template that defines which asset parameters are required, and then fill and validate that data through construction and commissioning. Tandem Connect adds pre-configured integrations, and Streams bring sensor and BMS data against the model elements. It is used mainly by owners who want a structured, model-based handover instead of a folder of PDFs and spreadsheets.

Vendor

Autodesk

Current version

Cloud service (continuous release) · 2026

First release

2021

Official site

intandem.autodesk.com

Platforms

Web browser

Deployment

cloudweb

Pricing model

Freemium

Free tier

Free version for importing models and testing sensor connections (verified on intandem.autodesk.com, September 2026)

Exchange formats

RVT (via Tandem for Revit add-in)IFCCSVXLSX

IFC

import: Yes · export: No

openBIM notes

Imports IFC models alongside Revit. Asset data is organised with facility templates, parameter sets and classification (Uniformat, MasterFormat or custom). No IFC or BCF export; data leaves via CSV/Excel and the REST API.

Automation & APIs

Tandem REST APITandem Streams (IoT time-series ingestion)Embedded viewer (JavaScript)Python and JavaScript samples on GitHub

Learning curve

Medium — Navigating and tagging is simple; designing templates and streams needs BIM and FM data knowledge.

Typical users

Building ownersBIM managersFM information managersCommissioning teams

Works with

Autodesk RevitAutodesk Construction Cloud (Autodesk Forma)Autodesk Navisworks (Manage / Simulate / Freedom)IfcOpenShell

Alternatives

Bentley iTwin PlatformTwinviewDalux FMTwinit (Invicara)

Best for: Owners on Autodesk-centred projects who want a model-based asset register at handover and a foundation for live operational data.

Market notes: Positioned by Autodesk as the operations-phase companion to Revit and Autodesk Construction Cloud; developer samples on GitHub were updated in July to September 2026.

Official training & certification

• Autodesk Tandem Help · documentation
• Autodesk Tandem developer samples (GitHub) · community

Sources: intandem.autodesk.com · github.com/autodesk-tandem · help.autodesk.com/view/TANDEM/ENU · Last verified 2026-09-15

The iTwin Platform is Bentley's set of cloud APIs and services for building infrastructure digital twins. It aligns engineering models, reality data (point clouds, meshes, photos), GIS and sensor data in an iModel that tracks change over time. iTwin Experience is Bentley's own cloud application on the platform; iTwin.js is the open-source library developers use to build their own viewers and apps. It is used by infrastructure owners, engineering firms and software developers, mostly in transport, utilities, water and plant sectors.

Vendor

Bentley Systems

Current version

iTwin Platform (cloud, continuous) / iTwin.js 5.x · 2026

First release

2018

Official site

bentley.com/software/itwin-platform

Platforms

Web browserWindowsiOS

Deployment

cloudwebdesktopmobile

Pricing model

Subscription

Free tier

Free developer tier on developer.bentley.com; free access for students and educators via Bentley Education (verified September 2026)

Native formats

.bim (iModel)

Exchange formats

IFCDGNRVTDWGPoint cloudsReality meshesGIS layers

IFC

import: Yes · export: Not verified

openBIM notes

iModels are built from IFC, DGN, RVT and other sources through connectors; iTwin.js is open source and aggregates BIM, reality, GIS and IoT data. IFC export from an iModel was not verified.

Automation & APIs

iTwin.js (open-source TypeScript library, v5.x)iTwin Platform REST APIs (Digital Twin Management, Reality Capture, Reporting & Insights, Project Scheduling, Administration)iTwin iOS mobile SDKWebhooks

Learning curve

High — Using iTwin Experience is straightforward, but building on iTwin.js requires TypeScript and cloud development skills.

Typical users

Infrastructure owner-operatorsEngineering firmsSoftware developersAsset information managers

Works with

Bentley MicroStationBentley OpenRoads DesignerBentley ProjectWiseBentley SYNCHRO 4DAutodesk RevitIfcOpenShell

Alternatives

Autodesk TandemTwinit (Invicara)Willow

Best for: Infrastructure and campus owners who need a developer-extensible twin that unifies Bentley and third-party engineering data with reality capture and IoT.

Market notes: Widely used in infrastructure (rail, road, water, energy) where Bentley design tools dominate; also the base for Bentley's AssetWise and iTwin Capture products.

Official training & certification

• iTwin Platform developer tutorials · course
• iTwin.js documentation · documentation

Sources: bentley.com/software/itwin-platform · developer.bentley.com · developer.bentley.com/tutorials · itwinjs.org · bentley.com/software/itwin-experience · Last verified 2026-09-15

Building X is Siemens Smart Infrastructure's cloud platform for building operations. It gathers real-time data from building automation, energy, fire safety and security systems and offers ready-to-use apps for energy and sustainability, safety and security, and operations and maintenance. Siemens cites customers such as the University of Wollongong using it as an asset lifecycle management and digital twin platform. It is aimed at owners and operators of large portfolios who already run Siemens or open-protocol building systems.

Vendor

Siemens Smart Infrastructure (Siemens AG)

Current version

Cloud platform (continuous release) · 2026

First release

2022

Official site

siemens.com/global/en/products/buildings/building-x.html

Platforms

Web browser

Deployment

cloudweb

Pricing model

Enterprise quote

Exchange formats

REST/JSON APIs

IFC

import: Not verified · export: Not verified

openBIM notes

Building X is a building-operations data platform rather than a BIM authoring tool. Direct IFC or COBie import was not verified; the platform exposes APIs for application data, building data management and user accounts.

Automation & APIs

Building X APIs (application data, building data management, user/account management)

Learning curve

Medium — App-based interface is simple; integration work is done by integrators.

Typical users

Building owners and operatorsEnergy managersFacility managersSystem integrators

Works with

Autodesk TandemIBM Maximo Application SuitePlanon

Alternatives

WillowTwinviewPlanon

Best for: Portfolio operators who want energy, security and maintenance data in one vendor platform, especially where Siemens building automation is installed.

Market notes: Marketed globally by Siemens Smart Infrastructure; certifications dated 2025 and 2026 are listed on the product page.

Official training & certification

• Siemens Building X product page and resources · documentation

Sources: siemens.com/global/en/products/buildings/building-x.html · Last verified 2026-09-15

IBM Maximo Application Suite (MAS) is an enterprise asset management platform that combines maintenance, inspections, reliability, asset performance and asset investment planning. Version 9.2 runs on Red Hat OpenShift on-premises or on AWS, Azure and IBM Cloud, and is also sold as SaaS. Licensing uses a credit-based AppPoints model. In BIM workflows Maximo is a common destination for COBie handover data, and Maximo Manage has BIM features for associating assets with model elements.

Vendor

IBM

Current version

Maximo Application Suite 9.2 · 2026

First release

1985

Official site

ibm.com/products/maximo

Platforms

Web browseriOSAndroid

Deployment

cloudwebmobile

Pricing model

Subscription

Exchange formats

COBie (XLSX)CSVXMLREST/JSON APIs

IFC

import: Not verified · export: No

openBIM notes

Maximo Manage includes BIM functionality (documented BIM storage configuration) that loads COBie-structured asset data and displays 3D models in a viewer. Direct IFC import was not verified for the current release.

Automation & APIs

Maximo REST APIMaximo Integration Framework (MIF)Automation scripts (Python/JavaScript)AppPoints licensing API

Learning curve

Very high — End-user screens are manageable, but configuration, integration and AppPoints planning are specialist work.

Typical users

Asset managersMaintenance plannersFM information managersUtilities and campus operators

Works with

Autodesk TandemYouBIMAutodesk RevitBentley iTwin Platform

Alternatives

PlanonEptura ArchibusDalux FM

Best for: Large owners who need a full EAM/CMMS and want to seed it from COBie or BIM data at handover.

Market notes: Common in utilities, transport, healthcare and higher education; several FM digital twin vendors (for example YouBIM) advertise Maximo integration.

Official training & certification

• IBM Maximo Application Suite documentation · documentation
• IBM Training (Maximo courses and certifications) · course

Sources: ibm.com/products/maximo · ibm.com/docs/en/mas-cd/continuous-delivery · ibm.com/docs/en/maximo-manage/continuous-delivery · Last verified 2026-09-15

Archibus is an integrated workplace management system (IWMS) that has been in the market since the 1980s and is now sold by Eptura. It covers space and occupancy, moves, maintenance work orders, asset management, leases and capital projects, with drawings and models linked to the database. Eptura positions it as the FedRAMP-authorised, highly customisable option for complex environments, available on-premises or as SaaS with a mobile technician app.

Vendor

Eptura

First release

1982

Official site

eptura.com

Platforms

Web browseriOSAndroid

Deployment

cloudwebdesktopmobile

Pricing model

Enterprise quote

Exchange formats

DWGRVT (via Autodesk integration)CSVXLSXREST APIs

IFC

import: Not verified · export: Not verified

openBIM notes

Archibus is CAD/BIM-linked IWMS: Eptura advertises Autodesk integration and 50+ connectors. IFC or COBie import was not verified on the current public pages.

Automation & APIs

Archibus Web Central REST APIsAutodesk (AutoCAD/Revit) integration50+ integrations listed by Eptura

Learning curve

High — End users learn quickly; administrators and CAD/BIM connectors need formal training.

Typical users

Facility managersSpace plannersGovernment and campus estates teamsCAD/BIM coordinators

Works with

Autodesk RevitAutodesk AutoCADIBM Maximo Application Suite

Alternatives

PlanonIBM Maximo Application SuiteDalux FM

Best for: Large public-sector, healthcare and university estates that need a customisable IWMS tied to CAD and Revit floor plans.

Market notes: Eptura is named a Leader in the Gartner Magic Quadrant for Workplace Experience Applications on its site; Archibus is its FedRAMP-authorised IWMS.

Official training & certification

• Eptura product resources · documentation

Sources: eptura.com · Last verified 2026-09-15

Planon is a Dutch software company with about four decades in facility and real estate management. Its platform covers integrated workplace management (real estate, space and workplace services, asset and maintenance, energy and sustainability), a campus edition for higher education, field services for FM providers, lease accounting and a Planon for SAP edition. It is used by corporate real estate teams, universities and FM service providers, typically as a cloud subscription.

Vendor

Planon

First release

1982

Official site

planonsoftware.com

Platforms

Web browseriOSAndroid

Deployment

cloudwebmobile

Pricing model

Subscription

Exchange formats

DWGCSVXLSXREST/SOAP APIs

IFC

import: Not verified · export: Not verified

openBIM notes

Planon markets itself as smart sustainable building management software with IWMS, campus, field services, lease accounting and SAP-integrated editions. BIM/IFC/COBie connectors exist in Planon's ecosystem but were not verified on the current public pages.

Automation & APIs

Planon Platform APIs (REST, SOAP)Planon for SAP integrationPlanon Marketplace apps

Learning curve

High — Configuration-driven platform; administrators need Planon learning services.

Typical users

Corporate real estate teamsFacility managersFM service providersUniversity estates

Works with

Autodesk RevitAutodesk AutoCADSiemens Building X

Alternatives

Eptura ArchibusIBM Maximo Application SuiteDalux FM

Best for: Organisations wanting a single European IWMS that spans space, maintenance, energy and lease data, particularly alongside SAP.

Market notes: Describes itself as a world leader in smart sustainable building management software; strongest in Europe.

Official training & certification

• Planon Learning Services · course

Sources: planonsoftware.com · planonsoftware.com/uk/services · Last verified 2026-09-15

Dalux FM is a cloud CMMS from the Danish company Dalux, marketed as the most user-friendly BIM-based and mobile CMMS. Work orders, planned maintenance, assets, documentation and a helpdesk are all navigated through 2D and 3D building models on web and mobile, with QR codes for asset identification. Because it shares the platform with Dalux Field, Box and Handover, asset data captured during construction can flow into operations without re-import.

Vendor

Dalux

Current version

Cloud service (continuous release) · 2026

Official site

dalux.com/dalux-fm

Platforms

Web browseriOSAndroid

Deployment

cloudwebmobile

Pricing model

Subscription

Free tier

Free trial offered on the product page (verified September 2026)

Exchange formats

IFCRVTPDFDWGXLSX

IFC

import: Yes · export: No

openBIM notes

Dalux products are built around IFC and other BIM model uploads; Dalux FM shows 2D and 3D models on web and mobile and is fully integrated with Dalux Handover, Field and Box for the transition from construction to operation.

Automation & APIs

Dalux APIIntegration with Dalux Field, Box and Handover

Learning curve

Low — Designed for technicians; model navigation needs little training.

Typical users

Facility managersBuilding ownersMaintenance techniciansFM service providers

Works with

Dalux BIM Viewer / Dalux BoxAutodesk RevitGraphisoft ArchicadIfcOpenShell

Alternatives

Autodesk TandemYouBIMPlanon

Best for: Owners whose contractors already use Dalux Field and Box and who want the same model-based interface for maintenance.

Market notes: Strong in the Nordics and Germany; the Dalux Summit 2026 is scheduled for 2-4 November in Copenhagen.

Official training & certification

• Dalux Help Center and webinars · documentation

Sources: dalux.com/dalux-fm · dalux.com · Last verified 2026-09-15

YouBIM, based in Gorham, Maine, is a web platform that connects BIM models with facility operations. A proprietary add-in exports 3D geometry and asset data from BIM software; the platform then gives FM staff a browser view of equipment, documents, maintenance history and automated maintenance reminders. It advertises integration with IBM Maximo and compatibility with existing FM tools, and targets owners who want a lightweight BIM viewer for operations rather than a full CMMS.

Vendor

YouBIM

Official site

youbim.com

Platforms

Web browser

Deployment

cloudweb

Pricing model

Mixed

Exchange formats

BIM geometry via proprietary add-inXLSX

IFC

import: Not verified · export: Not verified

openBIM notes

YouBIM exports 3D geometry from BIM authoring tools with its own add-in and formats facility data for FM use; the vendor notes that existing models may need adjustment to be FM-ready. IFC and COBie handling were not verified on the public site.

Automation & APIs

IBM Maximo integrationProprietary BIM export add-in

Learning curve

Low — Minimal setup is a selling point; model preparation is the main effort.

Typical users

Facility managersBuilding ownersBIM consultants

Works with

IBM Maximo Application SuiteAutodesk Revit

Alternatives

Dalux FMAutodesk TandemTwinview

Best for: Small and mid-size owners who want an easy BIM-based FM viewer with basic maintenance tracking.

Market notes: US-based niche product; public site carries a 2025 copyright.

Official training & certification

• YouBIM website · documentation

Sources: youbim.com · Last verified 2026-09-15

Willow is an operational AI and digital twin platform for facilities and infrastructure. It connects static, spatial and live data from more than 75 building systems, including BMS, CMMS and IoT devices, into a single knowledge graph built on Willow's open-source buildings ontology. Cross-system fault detection, impact scoring and Willow Copilot recommend or automate responses. It is built on Azure and used by airports, retailers, universities and healthcare operators.

Vendor

Willow

Current version

Cloud platform (continuous release) · 2026

First release

2017

Official site

willowinc.com

Platforms

Web browser

Deployment

cloudweb

Pricing model

Enterprise quote

Exchange formats

DTDL ontology (open source)BMS/CMMS/IoT connectors (75+)REST APIs

IFC

import: Not verified · export: Not verified

openBIM notes

Willow's twin is ontology-driven: its open-source WillowTwin building ontology extends RealEstateCore in DTDL and is designed for Azure Digital Twins. BIM ingestion is not described on the current platform page; spatial data is one of the three data classes (static, spatial, live).

Automation & APIs

Willow Copilot (conversational AI)REST APIsOpen-source WillowTwin DTDL ontology on GitHubAzure-native integrations

Learning curve

Medium — Dashboards are approachable; ontology modelling and integrations are specialist work.

Typical users

Portfolio operatorsEnergy and sustainability managersAirports and large campusesSmart building integrators

Works with

Autodesk TandemIBM Maximo Application SuiteSiemens Building X

Alternatives

TwinviewSiemens Building XTwinit (Invicara)

Best for: Large portfolios that want live, AI-driven operations on top of existing BMS and CMMS rather than a model-viewing tool.

Market notes: Vendor case studies dated 2025-2026 cite a 25% maintenance cost reduction at DFW Airport and USD 1.4M savings at Walmart; partners include Microsoft, HPE and Carahsoft.

Official training & certification

• WillowTwin open building ontology (GitHub) · community

Sources: willowinc.com · willowinc.com/platform · github.com/WillowInc/opendigitaltwins-building · Last verified 2026-09-15

Twinit is the digital twin application platform built by Invicara, which has worked in the digital twin field since 2018. It combines IT, OT and engineering data into semantic graphs that workflows and AI agents can reason over, and ships product lines for Asset Intelligence, Operations Intelligence, Project Intelligence and an Asset Twin that bridges project handover to operations. Developers build on it with open APIs, SDKs, app templates and the Twinit Workbench extension.

Vendor

Twinit (Invicara)

Current version

Cloud platform (continuous release) · 2026

First release

2018

Official site

twinit.com

Platforms

Web browser

Deployment

cloudweb

Pricing model

Enterprise quote

Exchange formats

BIM and GIS data (engineering data integration)IT/OT/IoT feedsREST APIs and SDKs

IFC

import: Not verified · export: Not verified

openBIM notes

Twinit integrates BIM, GIS, schedule, cost and risk data into semantic graphs; specific IFC support was not stated on the public pages. The Asset Twin product covers project-to-operations handover with as-built records.

Automation & APIs

Open APIs and SDKsTwinit Workbench (VS Code / Cursor extension)App Templatesdigitaltwin-factory developer community

Learning curve

High — Aimed at developers and integrators; expect graph modelling and API work.

Typical users

Owner-operatorsDigital twin developersCapital project teamsSystem integrators

Works with

Bentley iTwin PlatformAutodesk TandemIBM Maximo Application Suite

Alternatives

Bentley iTwin PlatformWillowSpinalTwin (SpinalCom)

Best for: Organisations that want to build their own twin applications on a graph platform rather than buy a fixed FM product.

Market notes: Invicara now operates as a Twinit company providing services to Twinit partners; site copyright 2026.

Official training & certification

• Twinit developer resources · documentation

Sources: twinit.com · twinit.com/invicara · Last verified 2026-09-15

SpinalCom is a French company whose SpinalCore Building Operating System (BOS) integrates building systems, spaces, equipment and data flows into a graph-based digital twin. SpinalTwin is the digital twin application suite on top of it, with SpinalOffice for occupants, Spinalboard dashboards and SpinalConnectors for BMS and IoT. Much of the core is published on GitHub. Clients cited include EDF, Enedis, Vinci and Credit Agricole.

Vendor

SpinalCom

Current version

SpinalCore BOS / SpinalTwin (continuous release) · 2026

Official site

spinalcom.com

Platforms

Web browserLinux (self-hosted)iOSAndroid

Deployment

cloudwebmobile

Pricing model

Mixed

Free tier

SpinalCore components are published on GitHub (350+ repositories, updated September 2026); licence terms per repository

Exchange formats

BIM models via Autodesk Platform Services viewer (RVT, IFC)BMS protocols via SpinalConnectorsREST APIs

IFC

import: Not verified · export: Not verified

openBIM notes

SpinalCom's viewer (spinal-browser-viewer) visualises 3D models converted through the Autodesk Forge/Platform Services pipeline, so Revit and IFC files can be brought into the twin. Native IFC parsing was not verified.

Automation & APIs

SpinalCore graph model (spinal-model-graph, TypeScript)spinal-organ API serverSpinalConnectors for BMS/IoTGitHub organisation with 350+ repositories

Learning curve

High — Developer-centric; graph model and connectors need coding.

Typical users

Building operatorsSmart-building integratorsDevelopersCorporate real estate in France

Works with

Autodesk RevitIfcOpenShellAutodesk Tandem

Alternatives

Twinit (Invicara)TwinviewWillow

Best for: Owners and integrators in the French market who want an open, self-hostable twin core rather than a closed SaaS.

Market notes: French market focus with utilities, construction and finance clients named on the vendor site.

Official training & certification

• SpinalCom GitHub organisation · community

Sources: spinalcom.com · spinalcom.com/en · github.com/spinalcom · Last verified 2026-09-15

Twinview is a cloud digital twin platform from the UK SPACE Group of businesses. It positions itself as the intelligence layer across an estate: it connects BMS, CAFM, BIM models, IoT sensors and document repositories, then offers live status dashboards, universal search, asset performance tracking and audit trails. It is used by NHS trusts, insurers and education estates and claims operations in more than 15 countries.

Vendor

Twinview (SPACE Group) (SPACE Group)

Current version

Cloud platform (continuous release) · 2026

Official site

twinview.com

Platforms

Web browser

Deployment

cloudweb

Pricing model

Enterprise quote

Exchange formats

BIM models (3D)BMS and IoT feedsCAFM connectorsDocument systems

IFC

import: Not verified · export: Not verified

openBIM notes

Twinview connects BIM, BMS, CAFM, IoT sensors and document systems without replacing them and provides a 3D model view; supported model formats are not listed on the public site.

Automation & APIs

System integrations (BMS, CAFM, BIM, IoT, documents)SSO and role-based access

Learning curve

Low — Dashboard-style interface aimed at estate teams.

Typical users

Estate and facility managersNHS and public-sector estatesProperty ownersFM providers

Works with

Autodesk RevitPlanonEptura Archibus

Alternatives

Autodesk TandemWillowDalux FM

Best for: UK estates that already have CAFM and BMS and want a model-based layer on top without replacing them.

Market notes: Part of SPACE Group; led by CEO Rob Charlton; clients cited include NHS and AXA.

Official training & certification

• Twinview platform resources · documentation

Sources: twinview.com · twinview.com/about · twinview.com/platform · Last verified 2026-09-15

BIM 360 Ops was Autodesk's mobile-first facility operations app in the BIM 360 family. Contractors pushed asset lists, documents and warranties from the construction phase and owners used it for work requests and maintenance on tablets and phones. Autodesk has since retired it; the retirement page could not be fetched for this entry, so exact end-of-sale and end-of-service dates are not recorded here. Autodesk Tandem is the current operations-phase product.

Vendor

Autodesk

First release

2016

Platforms

Web browseriOSAndroid

Deployment

cloudwebmobile

Pricing model

Mixed

Exchange formats

RVT (via BIM 360 handover)XLSX

IFC

import: Not verified · export: Not verified

openBIM notes

A mobile-first asset and maintenance app fed from BIM 360 handover packages. Not an openBIM tool; Autodesk's current operations product is Tandem.

Learning curve

Low — Was designed for non-technical operations staff.

Typical users

Building ownersGeneral contractors at handover

Works with

Autodesk Construction Cloud (Autodesk Forma)Autodesk Revit

Alternatives

Autodesk TandemDalux FM

Successor

Autodesk Tandem

Best for: Historical reference only; new deployments should look at Autodesk Tandem.

Market notes: Retired by Autodesk in favour of Autodesk Tandem and Autodesk Construction Cloud handover workflows.

Sources: intandem.autodesk.com · Last verified 2026-09-15

Cityzenith was a Chicago-based company founded in 2009 whose SmartWorld / SmartWorldOS platform aimed to build urban and building digital twins combining BIM, GIS and IoT data for decarbonisation. Its LinkedIn profile still lists the company and a 2016 Realcomm Digie award, but the cityzenith.com domain did not resolve on 15 September 2026 and no official closure notice was found. It is recorded here as discontinued for practical purposes.

Vendor

Cityzenith

First release

2009

Platforms

Web browser

Deployment

cloudweb

Pricing model

Mixed

Exchange formats

BIM modelsGIS dataIoT feeds

IFC

import: Not verified · export: Not verified

openBIM notes

SmartWorldOS was marketed as an AI-powered digital twin platform for zero-emission buildings and cities, aggregating BIM, GIS and IoT data. Format details cannot be verified from current sources.

Learning curve

Medium — Not applicable for new users.

Typical users

City governmentsReal estate developersSustainability teams

Alternatives

Bentley iTwin PlatformWillowTwinit (Invicara)

Best for: Historical reference; not available for new deployments.

Market notes: LinkedIn lists offices in Chicago, London and New Delhi and 11-50 employees; the product website is offline.

Sources: linkedin.com/company/cityzenith · Last verified 2026-09-15