What is the best wedgits and plugin you use with wordpress joomla drupal , explain there usage plz ?

I think the question should be according to the requirement.

At the moment one can not suggest the best plugin at its own without any details.

The question should be like: Which is the best plugin for On Page SEO used in the Wordpress , Joomla and Drupal and likewise.

Here we are totally unclear about the question / requirements of the user.