userscripts

All userscripts can be installed in Chrome using Tampermonkey (http://tampermonkey.net/faq.php#Q102) or in Firefox using Greasemonkey extension (http://wiki.greasespot.net/Greasemonkey_Manual:Installing_Scripts)

Duolingo

If you have Tampermonkey/Greasemonkey installed you can install by clicking on this link

contains script to display progress in Skills and Lessons.