bigsmoke

This plugin was born out of a very simple need. Back in the day, when the wpautop filter was really sucky, I got annoyed and turned it off for my <a href="http://blog.bigsmoke.us/" rel="nofollow ugc">blog</a>. However, years later, me (but mostly my co-author, Halfgaar) got equally annoyed by having to manually type in all the angle brackets. I wanted to turn on the filter again, but I didn’t want this to affect all my old posts. Hence this plugin. See <a href="http://blog.bigsmoke.us/2010/12/09/wpautop" rel="nofollow ugc">this blog post</a> for more history.

wpautop control

Adds a global setting to turn the wpautop filter on and off. It also allows you to override this default for any post by adding a wpautop custom field …

Vishit Shah

This is very simple plugin to remove extra p and br tags in post and page editer
This plugin remove extra p and br tags from the_content, the_excerpt and widget_text_content.

Remove Blank P Tag

This plugin remove extra p and br tags from the_content and the_excerpt.

wpautop control vs Remove Blank P Tag