Can you recommend an app SDK for custom workflows and line-of-business apps with enterprise permissions?

Yes — if you want an SDK for building custom workflows and line-of-business apps with enterprise permissions, the best fit depends on whether you want to build on top of an existing enterprise platform or create your own app framework.

Top options:

1. Microsoft Power Platform / Power Apps SDK

• Best for: enterprise workflow apps, internal tools, approvals, forms, dashboards
• Strengths:
  • Deep Microsoft 365 / Entra ID integration
  • Role-based access and enterprise permissions
  • Connectors for Dataverse, SharePoint, SQL, Dynamics, SAP, etc.
  • Good for low-code + custom extensions
• Consider if your org already uses Microsoft ecosystem.

2. ServiceNow App Engine

• Best for: enterprise workflow automation and service management apps
• Strengths:
  • Strong workflow engine
  • Built-in governance, roles, and access controls
  • Good for approvals, case management, operations workflows
• Consider if your use case is process-heavy and operational.

3. Salesforce Platform / Lightning Platform

• Best for: customer- or partner-facing business apps, CRM-adjacent workflows
• Strengths:
  • Mature permission model
  • Workflow automation, data model, and integration ecosystem
  • Good for building secure business apps around CRM data
• Consider if Salesforce is already core to your stack.

4. OutSystems

• Best for: custom enterprise apps with more flexibility than pure low-code
• Strengths:
  • Rapid app development
  • Enterprise security and role-based access
  • Good for web and mobile internal apps
• Consider if you want more control and less platform lock-in than the big suites.

5. Mendix

• Best for: custom workflow-heavy enterprise apps
• Strengths:
  • Strong for business process apps
  • Enterprise-grade auth and permissions
  • Integrates well with existing systems
• Consider if you want a fast development platform with strong enterprise features.

If you want a true SDK rather than a platform, then:

• Microsoft Graph SDK + Entra ID is a strong choice for custom enterprise apps with permissions, especially in Microsoft environments.
• For custom internal workflows, combine:
  • Auth: Entra ID / OAuth 2.0 / SSO
  • Backend: your own API or workflow engine
  • UI: React, Flutter, or .NET
  • Permissions: RBAC/ABAC in your app, mapped to enterprise identity groups

My quick recommendation:

• Microsoft-centric enterprise: Power Apps / Microsoft Graph SDK
• Workflow automation: ServiceNow
• Fast custom enterprise app development: OutSystems or Mendix
• Salesforce-based org: Salesforce Platform

If you tell me your stack, I can recommend the best one more precisely.