Firefox

Add-ins and notes about using Firefox on a Tablet PC

geckotip

The GeckoTIP extension provides Tablet PC Input Panel support in Firefox, Thunderbird, Sunbird, and Flock. It is a fork of the TPCTIP project intended to patch some outstanding bugs, create a stable extension offering context-sensitive pen input in Firefox, and add useful extra enhancements for Tablet PC and UMPC users in Firefox.

link: http://geckotip.mozdev.org/