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amiga-bootcamp/09_intuition/frameworks/README.md
Ilia Sharin 94a3ad1614 doc: MUI framework documentation — whitepaper overview, SDK-derived architecture, layout mockups 
- README.md: comprehensive whitepaper-style overview with historical context,
  paradigm shift analysis, BOOPSI comparison, version history (Stefan Stuntz
  as sole author 1.0-3.8), licensing model breakdown, parallel evolution
  timeline (NeXTSTEP/Qt/MUI convergence), community-sourced developer values
- 02-architecture.md: complete rewrite from MUI 3.8 SDK sources — object
  lifecycle state machine, three-level resource binding, method dispatch chain,
  notification system with sequence diagrams, layout engine internals
  (3-pass constraint system), input handling, dynamic object linking,
  rendering model, tag ID namespace
- 05-layout-system.md: Mermaid visual mockups for VGroup, HGroup, nested
  groups, column grids, scrollgroups, file requester real-world example,
  layout algorithm and resize sequence diagrams
- frameworks/README.md: framework index with comparison table
- All content in American English
2026-04-23 16:46:58 -04:00

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← Home · Intuition

GUI Frameworks

AmigaOS spawned several GUI frameworks beyond the built-in GadTools/BOOPSI system. These frameworks provide layout management, user customization, and richer widget sets — features that the base Intuition API does not offer.

Framework Index

File Framework Era Description
mui/ MUI (Magic User Interface) 1993– De-facto standard. Architecture, developer guide, code examples
reaction.md ReAction / ClassAct 1997– Hyperion's official OS 3.5+ GUI toolkit
bgui.md BGUI 1994– Lightweight BOOPSI-based layout system

Comparison

Feature MUI ReAction BGUI GadTools
Layout engine ✅ Constraint-based ✅ Constraint-based ✅ Basic ❌ Manual
User preferences ✅ Full ⚠ Limited ❌ None ❌ None
Custom classes ✅ MCC ecosystem ✅ MakeClass ✅ MakeClass ❌ N/A
Availability Aminet (free runtime) OS 3.5+ bundled Aminet (free) ROM built-in
Platforms AmigaOS, MorphOS, AROS AmigaOS 3.5+ only AmigaOS 2.0+ AmigaOS 2.0+
Adoption Very high Moderate Low Universal