1. All-in-One SEO Pack
Take control of your meta descriptions and page titles. You can also tag posts with categories. All-in-One SEO Pack is one of the most popular SEO-related plugins because of the essential functions it allows you to perform.
2. Ultimate Tag Warrior
Another extremely popular plugin, Ultimate Tag Warrior helps you to add tags, which are recognized by search engines like Technorati, to each of your posts. UTW provides you with a few different options for entering tags, including simply typing your tags when youâ€™re entering the post.
3. Related Entries
Internal linking is valuable for SEO and it can also help your readers to find additional content that may interest them. Related Entries will make the process easy. Your posts will automatically include links to related posts (in a list, at the bottom of the post).
4. SEO Title Tags
We’ve already mentioned title tags with the All-in-One SEO Pack, and SEO Title Tags provides another quality option. With this plugin you can easily control and optimize the titles of every page and post you create with WordPress.
5. Google Sitemap Generator
Google and other search engines use XML sitemaps to find and index all the pages of websites and blogs. By default your WordPress blog does not create an XML sitemap. With this plugin the process is automated. Additionally, it automatically updates the XML file whenever you publish a new post.
6. Sitemap Generator Plugin
No, this is not the same thing as #5. This plugin creates a sitemap that human visitors will be able to use, rather than an XML sitemap, which is created for search engines. This type of sitemap also has SEO purposes as it will place a link to every page/post on your blog, not to mention the fact that it’s helpful for visitors.
Antisocial is more SEO-friendly version of the very popular Sociable plugin. It adds no-follow tags to the links created by the plugin to social media sites.
8. WP Backlinks
Are you interested in getting more links to your blog? WP Backlinks helps you to collect and manage reciprocal links with other blogs. Other bloggers can fill out a form on your blog, add a link to you, and you will then be notified so you can add a reciprocal link.
9. Add Meta Tags
This plugin will give you the option to have meta tags automatically generated, or it will allow you to create them manually.
10. WordPress SEO Master
The SEO Master plugin has two modules, the nofollow module and the meta module. Like some of the other plugins listed, it will let you add and customize meta tags, but it will also let you tell WordPress to add nofollow tags to different types of links.
Search with the Keywords in your install plug in field in admin