There are lots of SEO Tools out there to help you gain perspective of your website from a search engine’s point of view. Perhaps the most fun and intriguing are those that allow you to learn more about your competitor’s SEO strategy.

Get ready to spend a few hours going down this rabbit hole… here are 5 of our top picks for tools that reveal SEO insight on your competitors:

Spy Fu:

Find out who’s paying what for online advertising among your competitors. Spy Fu is the follow up to Googspy.com and offers tons of . Because SpyFu is currently in Beta, some of the data may be a few months behind, but incredibly insightful nonetheless.

Cost: Free

Niche Watch

Before you go spying on your competition, you have to know who they are. Niche Watch gives you a quick overview of the top 20 sites you must compete with to take the top spots. You’ll also get an overview for each competitor about of the number of backlinks to the page, backlinks to the domain, on-page keyword count, number of pages indexed in Google, and more.

Cost: Free

SEO SpyGlass

Shows you at a glance all the techniques your competitors are using to gain a foothold in the search engine rakings. By analyzing their tactics, you can formulate an optimization strategy that’s a step ahead.

Cost: $87 for a professional license

NeboWeb Search Engine ScoreCard

This nifty little tool allows you to size yourself up next to your competitors. Compare page rank, inbound links, on-page optimization factors, and ranking position for keywords in Yahoo, Google, MSN, and AOL. This tool doesn’t offer too much information you can take action on, but shows how you stack up to the competition.

Cost: Free

The Way Back Machine

There is something very rewarding about looking back on your competitors websites over the years. You’ll see how their websites have changed and gain insight about how their strategy has changed over the years as well.

Cost: Free

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