WordPress.org

One of the most downloaded WordPress plugins (over 30 million downloads since 2007). Use All in One SEO Pack to optimize your site for Search Engines.

By: Michael Torbert, Steve Mortiboy, Dougal Campbell, Peter Baylies, and others.

This all-in-one SEO plugin gives you control over meta titles & descriptions, open graph, auto-linking, rich-snippets, 404 monitoring, siloing &am

By: Jeffrey L. Smith, John, Aleksandar Djuric, and M Rub Shuvo.

A WordPress XML Sitemap plugin that comes with support for Sitemap Index, Multi-site and Google News sitemap. Image sitemap is supported, too.

By: Khang Minh.

XML and Google News Sitemaps to feed the hungry spiders. Multisite, WP Super Cache, Polylang and WPML compatible.

By: RavanH.

Adds Google, Yahoo and Bing verification codes and adds Site Statistics scripts to your site

By: CyberChimps.

In its simplest terms, a XML Sitemap-usually called Sitemap, with a capital S-is a list of the pages on your website.

By: corvannoorloos.

Protect your blog content from getting copied. A simple plug-in developed to stop the Copy cats

By: Chetan Gole.

Boost CTR. Improve SEO & Rankings. Supports most of the content type. Works perfectly with Google, Bing, Yahoo & Facebook.

By: Brainstorm Force and Nitin Yawalkar.

The most comprehensive & user-friendly mapping solution for WordPress

By: RobertHarm and Waseem Senjer.

The Image Sitemap plugin will generate an XML Sitemap for Images that exist in your WordPress blog.

By: Amit Agarwal.

Sitemap submission to Google & Bing. Webmaster option 4 Google,Bing,Facebook,etc. Analytics option 4 Google, Quantcast, Clicky, Compete

By: App Shah.

Easy to use, highly configurable WordPress RSS and Google XML Sitemap generator plugin. Compatible with Google, Bing, Baidu, Yandex and more.

By: XmlSitemapGenerator.

An easy to use XML sitemap generator with support for image and video sitemaps for WordPress.

By: Marco Beierer.

The SEO Framework plugin provides an automated and advanced SEO solution for your WordPress website.

By: Sybre Waaijer.

Adds Bing Webmaster Tools verification meta tag and gets account verified.

By: Audrius Dobilinskas.

This WordPress plugin will generate an XML Mobile Sitemap for your WordPress blog.

By: Amit Agarwal.

Easily add your Meta Tags to the WordPress website's head section. This is a must have tool for authors and website owners.

By: Arthur Gareginyan.

Simple plugin for adding tracking code to site head and footer section.

By: Khaled.

Fine tune your WordPress for SEO: rewrite title, add meta tags, canonical links and more. Out-of-the-box settings are a good starting point for blogs.

By: Daniel Fru?y?ski (sirzooro).

Add meta tags such as title,description,keywords,index in posts, pages, categories & everywhere on your site.

By: Seo UK Team.

An easy way to add Google, Yahoo, Bing, Alexa and Pinterest meta tag verification codes to your site and gets ownership verified.

By: tiguan.

This SEO plugin offers keyword suggestions, taken from autocomplete google, yahoo, bing... up to 250 keywords ideas

By: Nicolas Marin Torres.

You will be able to manage the Internet traffic on your website and to enhance it.

By: SedLex.

Scribe makes content marketing simple.

By: ScribeSEO, nathanrice, and Ron Rennick.

This SEO plugin checks the content of posts/pages for the keyword density (single/phrases) while writing and is automatically setting the META-tags.

By: alm.

WP Slug Translate can translate the post slug into English. It will take the post ID as slug when translation failure.

By: boliquan.

The easiest tool available for creating custom & great-looking Google Maps. Add multiple pins and customize maps with drag-and-drop simplicity.

By: stevenellis.

The WordPress SEO Comments Plugin turns comments into search engine optimized portals to your blog, new Google SEO entry points into WordPress sites.

By: SEO Dave.

Get Real Buyer and Boost Your Sell by Uploading your Products to 100+ Shopping Engines Like Google Shopping, Facebook, Amazon, eBay, Pricegrabber.

By: Ohidul Islam.

Create Easy a Google XML sitemap of your WordPress Website. The plugin supports also the search engines Ask and Bing.

By: Adam Brasin.