1) All in one SEO

This plugin will help to Optimizes your WordPress blog for Search Engines (Search Engine Optimization).

Features:

  • Automatically optimizes your titles for search engines
  • Generates META tags automatically
  • You can override any title and set any META description and any META keywords you want
  • You can fine-tune everything

Click here to read more detail & download.

2) Google XML Sitemaps

This plugin generates a XML-Sitemap compliant sitemap of your WordPress blog. This format is supported by Ask.com, Google, YAHOO and MSN Search.

Features:

  • Generates automatically a sitemap for all types of WordPress pages
  • Notifies Ask.com, Google, MSN Live Search and YAHOO about changes via ping
  • Generates a static XML file as well as a zipped version

Click here to read more detail & download.

If You don’t know how to install WordPress Plugin, click here to see how to install WordPress Plugin tutorial.