1. Open Site Explorer: This tool can be used to check the links pointing to your site. OSE also tells you the Domain Authority and Page Authority of the inbound links. My favorite part of this tool is that it allows you to compare link metrics, which is helpful for your site and your clients.
2. Screaming Frog Spider Tool: This tool is great for performing site audits. It collects a ton of information and gives you plenty of areas to consider when making changes on your site. A few examples of the data collected are: H1 and H2 tags, canonical links, images, and anchor text.
3. Search Engine Roundtable: Barry Schwartz’s blogs and his tweets are not tools in the normal sense, but they are absolutely essential to any SEO. Barry has built a great network and his information is always 100% useful.
4. SEOmoz: SEOmoz provides their own tools, but much like Search Engine Roundtable they are invaluable for their information. Rand’s and SEOmoz’s blogs are very informative, and along with the comment forums (where it seems every SEO hangs out) provide useful information and ideas always.
5. Pingdom and Google PageSpeed Insights: These are both good tools for checking your site’s PageSpeed. They provide more than a number; they provide information on where your site might be slow. This is really helpful because it breaks down the entire site.
6. Searchmetrics: Searchmetrics is primarily a paid service, but they do offer a free service that offers SEO visibility and keyword analysis. When I first started using Searchmetrics I felt that it was pretty poor service, but in the past 60 days they have made quite a few changes and feel that it is very helpful. It is not only useful to SEO’s but it can be useful to sales people that have to do a quick analysis.
7. Bing Webmaster Tools: Bing Webmaster tools just did a major overhaul and the changes are night and day. They provide extremely useful information, but the tools are what make Bing shine. I am a big fan of the SEO analyzer and Fetch as Bing bot. Google is obviously the major player, but you cannot afford to ignore Bing and all their tools.
8. Google Webmaster/Google Developer: These are obvious to most, but everyone might not be taking full advantage of are the forums and the search libraries. I have found many that many of my questions have also been troubling other SEO’s and developers and the answers were right on the forums or in the help library.
9. Copyblogger: Everyone knows the importance of content, and Copyblogger helps you create the correct content for your audience. Their blogs are always helping create content and find new ideas, and their free webinars are time well spent.
10.Family, Co-workers and Friends in the industry: These people are truly your backbone and are needed to bounce ideas off of and pick you up every once in a while.
What are some of your favorite tools, what SEO tools can you not live without? We want to hear from you.