Miguel Javier said:

GTD Tiddly Wiki is a GettingThingsDone adaptation of JeremyRuston’s
Open Source TiddlyWiki. The purpose of GTD Tiddly Wiki is to give
users a single repository for their GTD lists and support materials so
they can create/edit lists, and then print directly to 3×5 cards for
use with the HipsterPDA.

http://shared.snapgrid.com/gtd_tiddlywiki.html

No kidding. I wonder what we should do to get Planner to support 3×5
index cards sanely…

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