Bentley recognizes that information mobility is crucial to the successful, cost-effective design, delivery, and operation of infrastructure.
That's why Bentley is offering the following iWare Apps - many apps are free to download and use, others are passport enabled as indicated.
Free 
ProjectWise Passport Enabled
Apps for All AECO Professionals
Interact with DGNs, DWGs, and i-model files
Quickly validate AGS files and use them in Excel
Easily perform unit conversions
Manage structural workflows and information exchange
Synchronize data, obtain revision history, and view models
View structural models on your iOS device
Review 3D design models on the iPad
Create, browse, and view ProjectWise documents on the iPad
Leverage i-models for intelligent 3D PDF
Apps for Microsoft Windows 7 Users
Preview and search DGNs and i-models in Windows Explorer and Microsoft Outlook
Access data within DGNs and i-models with Microsoft Excel
Access data within DGNs and i-models with Microsoft Access
Access data within DGNs and i-models with SAP Crystal Reports
Access data within DGNs and i-models with Microsoft Visual Studio
Access data within DGNs and i-models
Leverage i-models for intelligent 3D PDF
Preview and search DGNs and i-models in Windows Explorer and Microsoft Outlook
Interact with DGNs, DWGs, and i-model files
Easily perform unit conversions
Manage structural workflows and information exchange
Synchronize data, obtain revision history, and view models
View structural models on your iOS device
Review 3D design models on the iPad
Leverage i-models for intelligent 3D PDF