Vedanta
http://www.arshavidya.org/home.html
Sanskrit
http://www.sanskrit-lexicon.uni-koeln.de/
http://www.sanskrit-lexicon.uni-koeln.de/scans/MWScan/2014/web/webtc/indexcaller.php
http://www.sanskrit-lexicon.uni-koeln.de/work/fflexphp/web/index.php
http://arshadrishti.org/sanskrit-classes/