NinjaKit CRX for Chrome is a free Developer Tool extension. This extension is developed and published by ss-o.net. Find, Download, and Install the latest and old CRX versions from here.
NinjaKit Description: yet another greasemonkey. This is experimental extension. supported API: -GM_xmlhttpRequest -GM_addStyle -GM_getValue -GM_setValue -GM_listValues new in ver0.7 -GM_deleteValue new in ver0.7 -GM_log -GM_openInTab -GM_registerMenuCommand(not yet safari) -Metadata @include @exclude @require @bookmarklet http://wiki.greasespot.net/Greasemonkey_Manual:API