Definitely the most valuable analytics package out there. World-class enterprise grade analytics for free. The first thing you should install.
Google Webmaster Tools
This one isn’t optional folks. You have to install Google Webmaster Tools in order to ‘communicate’ with Google about your site.
Bing Webmaster Tools
Bing’s version of webmaster tools.
Google Adwords Keyword Tool
This is the defacto starting point for your keyword research in SEO. Everything starts here!
SEOBook SEO Tools (These are both free and paid)
Check some of these SEOBook tools out.
SEO Site Tools (Google Chrome Plugin)
This is a great chrome plugin.
Google Trends is a great additional tool to check query volume.
Find broken links and errors with Xenu.
SEM Rush (SEM Data and Organic Ranking Information)
Get a better view of the competitive SERP landscape.
See how search engines view your site with Browseo.
XML Sitemap Generator
You can create an XML sitemap here.
Rich Snippets Testing Tool
Use this tool to check how Google views your structured data markup. It’s particularly useful if you have a G+ profile and you want to verify authorship for your blog posts.
Virante Duplicate Content Checker
Use this to determine wether or not you have duplicate content problems.
Advanced Link Manager – Manage your links. This tool is awesome.
Link Research Tools – Compiles link data from lots of sources into one dashboard.
Majestic SEO – One of the best link explorers in the industry.
Open Site Explorer – THE best link explorer in the industry.
Ahrefs – A great link analysis tool.]]>