All of these items are completely free, or they have a free trial.  Give them a shot and see what you think!

• Link Popularity Checker – Very cool tool! This tool does a real-time link popularity check for your website from all the major search engines.  This is a great way to see how you are progressing in your linking campaign.

• DeletedDomains.com – Check here to find domain names that are about to expire.

• Wordtracker – Wordtracker can help you optimize your wording for Pay Per Click advertising by checking out how many people are searching for your product or service. Check out the free portion of their site.

• Overture Keyword Suggestion Tool – Use this tool to help find additional phrases too use in your pay per click advertising.  Great statistics, and completely free!

• AnyBrowser.com – AnyBrowser is a great resource for checking browser compatibility for your websites. You can also use AnyBrowser to improve your web site, check your HTML, and check for dead links.

• Google Toolbar – This is a great tool. With the Google Toolbar, you can search the web with Google from any site, eliminate annoying pop-up ads, and even shop faster by filling in forms with one click.

• LinkExchanged - LinkExchanged allows you to exchange links with link partners immediately! Their database of 4500 members and an easy to use customer interface can make your life a whole lot easier. Once you approve a link, the process is completely automated.

• Free Sticky – FreeSticky is primarily a source of free and low cost content that anyone can use to increase the appeal, usefulness, traffic and eventually the stickiness of their website. Changing content and interactive web site tools are the driving force behind return visits to any website.