guusifs

This plugin is intended to make on site SEO very simple, not necessarily easy. The basic idea is to add the meta description tag to your pages and posts.
Next to adding the meta description tag it also has the option to override the default title of your post and/or display clean titles without the site name.
More information about the background of the plugin in the IFS SEO Simple main screen. Just download and install. The plugin won’t change anything before you configure it, so you can install it safely. You will only see some additional fields in the edit screen, but if left empty they don’t do anything.

Plugin Name: IFS Seo Simple

Purpose of this plugin is to make on site search engine optimization simple.

Babar

Yet another WordPress SEO plugin to enhance on page SEO of your website.
It provides a simple to use interface to enter your meta tags like meta descriptions and keywords. 
The tags will automatically inserted into your website header while a visitor or search engine bot visit your website. This will enhance your presence to search engines and will work with you to increase your visitors.
Upcoming features: 
* Automatic meta tag generator 
* A nice Admin panel 
* Support for custom post type
If you have further query, <a href="http://en.ibabar.com/contact-us" title="Mail me directly from my blog" rel="nofollow ugc">contact me</a>

MetaTag

MetaTag is a simple to use WordPress plugin to enhance on page SEO of your website.

Plugin Name: IFS Seo Simple vs MetaTag