What is Ruby on Rails?
Ruby On Rails is an open-source web framework that's built for productivity.
Below are some of the gems we have installed with our setup.

rake 
actionmailer 
actionpack 
actionwebservice 
activerecord 
activesupport 
gnuplot 
mongrel 
mysql 
tidy 
xml-simple 
payment 
BlueCloth 
feedtools 
htmltools

Click here to read more about ROR.