Which maintenance planning software supports offline field use and role-based access control for ramp and hangar teams?

A few maintenance planning platforms that are commonly used for offline field use and role-based access control in ramp/hangar operations include:

• Ramco Aviation M&E / MRO – supports mobile/field workflows and granular role-based security.
• IFS Maintenix – strong role-based access control; mobile/offline capabilities are often used in field operations through its ecosystem/mobile apps.
• AMOS (Swiss AviationSoftware) – widely used in maintenance planning; supports role-based permissions and mobile/field access options.
• Trax eMRO – designed for airline maintenance operations, with mobile-friendly workflows and role-based security.
• Ultramain v9 / UltraELB – supports line maintenance and ramp operations, with access controls and offline-capable field functionality in some deployments.

If you want, I can narrow this down to:

1. best for airlines,
2. best for MRO shops, or
3. best for ramp/line maintenance with true offline mode.