Search Engine Marketing Research Tools and Software

Free Tools

The following is a list of commonly used search engine marketing research tools, software and resources.

1.Alexa
2.Keyword Suggestion, AdSense, Ranking Monitor
3.Instant Position
4.Free Directory of SEO tools
5. Free Link Popularity and Link Quality Checker
6. Linkpopularity.com
7.Live Keyword Analysis
8. Marketleap Free Tools: Link Popularity, SE Saturation, More
9.NetMechanic HTML Code Checker
9. Overture Search Term Suggestion Tool
10. Report a Google Spammer!
11. Search Engine Decoder
12. SEM ROI Calculator
13. SpiderSim

Paid Tools

1.Competitive Intelligence Tool
2.SEOTool Set
3.Trellian SEO Toolkit
4.WebPosition Gold
5.WordTracker
6.Web CEO
7.Web Trends

please give your suggestions for additional resources.