I just found 4 free online SEO tools which will help you track and identify criterias for better rankings. These tools below only need a simple registration from a single website. Sitening provides these great SEO tools with simple but very intuitive interface.

SEO Analyzer
The SEO Analyzer tool helps you build better search engine optimized web designs. Just enter your URL and it will analyze your page and give you a breakdown on all the on page elements which can be enhanced. The tool covers elements like

• Semantic Structure
• Page Content
• Obsolete & Deprecated HTML
• Inline Styles
• Download Size/Time
• Outgoing Links
• Top Keywords

SERP Tracker
The SERP tracker tool tracks your SERP ranking based on the keywords you specify. Before using this tool and the Backlink Analyzer, you are required to enter API keys from the top 3 search engines, namely Google, Yahoo and MSN. Obtaining the 3 API keys are easy and it’s well documented on the tool page.

Once you enter the API keys, specify the domain and keywords you want to track. Depending on your settings, the SERP tracker will generate a nice graph and show you where you stand. A very indispensable tool!

Backlink Analyzer
The Backlink Analyzer is used to research domains for link quality. This tool does not only track backlinks but shows you different types of backlinks so you know exactly which type websites weights more. Below are the top elements that makes a difference for your off site optimization.

• Indexed Pages in Google, Yahoo and MSN
• Links to Website in Google, Yahoo and MSN
• .EDU and .GOV Links
• Domain Age
• Domain Expiration
• PageRank
• Alexa Traffic Rank
• DMOZ Listing

PageRank Checker
This tool is a simple one available almost everywhere. It just shows you the PageRank of the URL you enter.

Tags : SEO, SEO tools, free, PageRank, ranking, google, backlinks, SERP