November 2008
obtrusivejavascriptchecker - Google Code
by 1 otherGoes through all the HTML code in a web page, and outlines any HTML element with inline events with a red border.
nifty idea (via codepo8)
March 2008
xbl - Google Code
The XBL 2.0 has so far not been implemented in any modern web-browser. However the implementation hosted here is designed in a way that it will not be used in case browser supports the technology natively. The list below contains browsers on which the implementation was successfully tested.
via Glazou
November 2007
GmailGreasemonkey10API - gmail-greasemonkey - Google Code
by 2 othersAPI reference for version 1.0 of the experimental Gmail Greasemonkey API
future of web app is hackable