Free SEO SEM Tools online : Tested

Here is a list of Top SEO tools available for free and useful in various SEO / SEM operations such as Website analysis, link popularity and ban check, submitting to directories etc.
Please have a look at the details below and the source where you can test / use all those tools is mentioned at the end of the post.
Web Rank Checkers:
- Fake Rank Checker
Check to see if a website is illegally faking their Google PageRank.
- Alexa Traffic Rank Checker
View and compare Alexa Ranking graphs.
- Multiple Keyword Search Engine Position
Check a website’s search engine position with multiple keywords.
- Multiple Website Search Engine Position
Check multiple websites’ search engine position with a single keyword.
- Multi-Rank Checker (PageRank and Alexa)
Check multiple websites’ PageRank and Alexa rank.
- Search Engine Position Checker
Check the position of a single site with a single keyword on various search engines.
- Site Rank Checker
Check PageRank and Alexa Rank for a site.
IP Related Tools:
- Reverse IP/Look-up Script
Resolve a host to an IP address.
- Ping Script
Ping a domain or IP address to find the response time.
- IP Locator (country)
Locate the country an IP address resides in.
- Firewall Scanner
Check to see if your server is secure on various ports.
Header & Tag Tools:
- HTTP Header Extractor
Extract the HTTP Headers of a web page.
- HTTP Header Viewer
View the headers of the site of your choice.
- Meta Tag Extractor
Extract meta-tags information from a web page.
- Meta-Tag Generator
Generate meta-tags for your site.
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