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First and simplest, just configured instances of the IFrame Portlet. More ambitious, JSR-168 that leverages Vishal's WSRP production work to grab tool content (not using WSRP, but similar approach).
This provides something more interesting to have as the "leaves" of the tree of the injected Sakai tab. It also allows traditional layout management with layouts containing Sakai content.
Sakai tool placements (tools in the context of sites) available from Sakai via the GAPs abstraction (get a group of portlets).
Allows making portlets fronting Sakai tools-in-context available for subscription individually / incluson in layouts.
A Sakai GAP Group Store implementation vending groups of Sakai portlets.
Sakai groups available as GAPs groups
A Sakai GAP Group Store implementation vending groups of Sakai users.
Sakai Tools as portlets configurable via the Portlet API
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