CompareYourClicks
CompareYourClicks is a very handy tool that allows you to search for any keyword and see what the top 5 bids are on several pay per click search engines for that keyword. Very handy and useful.

Search Engine Software
EngineReady is offering software to help you get what you need done, quickly and easily.
Good Keywords Professional:
Research and find out which keywords you should be using for your pay per click search engine or search engine optimization campaign.
TopDog Analyzer/Submitter:
Submit your web pages and study you or your competitors rankings. .

PPCVIP
The Pay Per Click V.I.P. card is a good way to start adveritising on many pay per click search engines at once. Start with over $2,000 worth of click throughs.

KeywordGold
Keyword Gold Card is the largest and longest running pay per click submission service offering over $3,500 in credit at more than 110 pay per click search engines. It will also upload your title, description, keywords and bid amount to the majority of those pay per click search engines.

Search-Network
Search-Network is offering over $2,000 in advertising accounts at pay per click search engines for $29.95.

AmazingSubmit
AmazingSubmit offer a full range of cheap search engine optimization and submission services. Get your site listed and ranking well in all the major search engines with AmazingSubmit.

WordTracker
WordTracker is a tool that helps you do keyword planning for your site or pay per click campaign. It has new agreements with Metacrawler and Dogpile so that WordTracker will now provide its users with 350 million keywords per month.

Top-10
Top-10 gives you a Visibility Report service. It's free and it will show you if your site ranks in the top listings of the 18 major search engines. A time saving tool that can show you where your website promotion needs to be strengthened.

The Mother of all Search Engine Reference Books II
Pandecta Magazine have re-released their book and called it "The Mother of all Search Engine Reference Books II." It is still a free download and a good resource for finding information on all search engine topics.

Search Rank Watch
EchoEcho's search rank watch tool allows you to check where you are ranked in 10 popular search engines.

Softnik's Domain Name Analyzer
Improve your search engine ranking with a domain name that attracts targeted traffic. Softnik's free web tool, Domain Name Analyzer makes the task of finding the right domain for your site less daunting. Enter your keywords and DNA will search for possible combinations, examining all top-level domains. The analyzer then checks to see which possibilities are still available. To help you make the right decision and ensure you're not using registered characters, it looks up US trademarks and patents automatically.

KeywordCount
KeywordCount is a real-time keyword frequency analyzer. It allows you to compare the keyword frequency of two sites.

AllSearchEngines
AllSearchEngines is a comprehensive listing of all major search engines, specialized search engines and web directories.