From MemberWiki
This page lists scenarios today where toolkits interoperate successfully and where interoperability falls short.
Here are some possible topic areas (originally copied from Interoperability Use Cases and Requirements):
Toolkits being actively tested/examined, coming from OAA members
OpenLink AJAX ToolKit
Side Effects
Widgets
Load/unload handler coordination
JavaScript namespace coordination (particularly window-object-level)
Event model
Container widgets
Component model
Drag and Drop
Behaviors (e.g., draggable, editable, movable, ***able)
Effects (e.g., animation)
Data binding
Data Objects
Communications (e.g., HTTP)
Introspection
Back button and bookmarking
Undo
Rendering
Pluggable looks and feels and styling
Internationalization
Accessibility
Security
Diagnostics and logging
Dynamic addition of widgets