Your best bet is going to be to focus on link building tools in particular. Open Site Explorer and Majestic SEO are a good place to start.
Hi blue beacon,
Most good seo tools used by internet marketers are not free, but they always give free trials, so you can try them and see if they suit you.
Market samurai, scrapebox, xrumer, bookmarking demon, article marketing robot, the best spinner and senukex are some of the best SEO tools around.
You can always look around for free tools but none of them will give you the edge needed to outrank competition.
Here's a thread in our Google SEO forum where members are discussing their favorite tools: [webmasterworld.com...]
I think the best free seo tool is the SEOmoz plugin for Chrome and Mozilla :) it shows some very cool stats
According to me Rank Checker (SEObook.com) is the best tool i have ever had.
I think google page rank checker(http://www.prchecker.info/check_page_rank.php) is the best tool.
I do not need rank checker, if the back links increased, the website built well the rank will increased sooner or later. Please suggest me free seo tools for back link building.
Best free seo tools are Google Analytics, Google Adwords and Webmaster tool. This all are the one of best and useful tool.
Google's webmaster tool, analytics, Adword are the best service provider tool in seo.
anyone suggest a tool to monitor any url specific changes on website
Seo spyglass, majestic seo, google webmaster tool