I came across a wonderful site a couple of weeks ago. nb.femhub.com
FEMhub is still at its beginning stage, but it can already do lots of interesting stuff. For someone like me who teaches numerical/computer methods in engineering at a developing country where computing is costly, tools like FEMhub are very much welcome.
More about FEMhub on my website. Try out the example worksheets and I think you'll be pleasantly surprised.