SEO & SEM Tools

Below is a selection of tools and resources that I use in
my day to day activity as a SEO consultant. There's a wealth of information
out there if you look for it. This little lot should keep you busy in
the mean time.

Keyword research

• Overture Search term suggestion
• Google keyword suggestion
• Google Suggest
• GoRank Ontology
• Quintura.com
• WordTracker
• SEO Book Keyword Tool

Code & infrastructure

• W3 XHTML Validation Service
• W3 CSS Validation Service
• W3 Broken Link Checker
• HTMLHelp code checker
• Server response code checker
• ISAPI URL Rewriting
• MOD Rewrite - URL Rewriting
• Google & Yahoo sitemap generator
• Canonical URL
• Internal Link Analysis

Content analysis

• SEO Keyword Analysis Tool
• Spider Viewer
  

Spam analysis

• CopyScape
• Bad-neighborhood.com

Competitor analysis

• SEO for Firefox
• Hub Finder
• URLTrends Domain Trend Analysis Tool
• Myriadsearch.com

Link analysis

• Backlink and anchor text analyzer
• C class backlink analyzer
• Deep link ratio analysis
• Market leap
• Yahoo! Site Explorer
• PageRank calculator

Page analysis

• SEOMoz Page Strength Tool
• Google Toolbar

Monitoring performance

• Google Analytics
• Keyword Tracking Tool
• Google Webmaster Central
• HitTail Long Tail Keyword Marketing Tool

Useful forums and blogs

• Cre8asiteforums.com
• Searchenginewatch.com
• Webworkshop.net
• Webmasterworld.com
• SEOBook
• Stuntdubl
• Matt Cutts - Google Engineer
• Official Google Blog