greasemonkey
O'Reilly Network -- Avoid Common Pitfalls in Greasemonkey
http://www.oreillynet.com/pub/a/network/2005/11/01/avoid-common-greasemonkey-pitfalls.html
Mark Pilgrim walks through a major security concern that prompted the architectural changes in Greasemonkey 0.5, and which provides a useful lesson on designing secure user scripts. Mark is the author of Greasemonkey Hacks.
Added 18 years ago
User Script Compiler
http://www.arantius.com/misc/greasemonkey/script-compiler.php
Added 19 years ago