The following list of tools and resources we use on a regular basis. Some of them are paid for but I have seperated them from the free resources. As I find new tools I shall add to the list as much as possible. Comments enabled for any suggestions.
SEO/Web Master Tools
Free Tools

1. 103Bees – An Analytics tools that is highly focused on Search Engine Traffic Analysis. I find the user interface of this to be very simple and it allows you to see what keywords you were found for most recently. It does use javascript in case you have an aversion to using scripts on your site.
2. AWStats – An website analysis tool similar to 103bees and Google analytics however this analysis the Logfile of a website and therefore does not require JavaScript on each page. It does require Perl/CGI access so this may not be for everyone.
3. Digital Point Keyword Tool – An oldie but a goodie, Digital Points Keyword tool uses data from both wordtracker and overture. My only gripe is the annoying Captcha, but that is because I am thick and always mistype the letters in.
4. Domain Tools – Mainly used for WHOIS data but also provides some useful website and server data. Some of the advanced feature does require a subscription but I would say they are not worth it unless you are a power user.
5. Google Analytics / Google Webmaster Tools – Both of these are tools a lot, if not most web masters use. Webmastertools allows you to add an xml sitemap to Google, which in theory should ensure your pages get indexed; it can also provide some rankings, though I find them somewhat inaccurate. You can also set the preferred domain which I find quite useful as our servers are IIS so we cannot set the domain with a 301 in the .htaccess. Google Analytics is a pretty thorough analytics tool, and you can set it up to differentiate between Adwords Traffic and Organic Traffic. Google Analytics also uses jscript for analysis so it may not be for everyone’s taste.
6. Google Keyword Tools – Another handy little Keyword tool, this is nice to find out the cost of the Keywords with Adwords.
7. IWebTool Web Tools – I do not actually use this set of tools that often as I find most of the tools I would use are already available in the extensions I use with Firefox. However it is popular and does have a nice set of tools. Yes it is an affiliate link, the tools are free to use but if you do buy something off there then I may as well try and earn something out of it.
8. Overture Keyword Selector – Yes another keyword tool, don’t really use this one as it is used in Digital Points tool, however since the DP tool wouldn’t be the same without it I thought I should mention it.
9. Ping-O-Matic – A useful tool to ping blogs when you make a post, not really needed if you use wordpress as you can set it up to auto ping.
10. SEO Digger – Not so much a tool that is much use for us Brits as I believe it uses data from the US Data centres however it is fun to use and can help with investigating competing websites.
11. Sitening SEO Tools – Not used very frequently however the SEO Analyser can be useful for finding out areas a site can be improved on.
12. Who Is Hosting This – Again not used that often but it useful to find out who hosts certain websites.
13. Xinu – A great little tool for analysing a website. Can quickly check Pagerank, Backlinks, Indexed pages, and more. Installed on our servers though the original created is based here.
14. XML Sitemaps – Why write your own XML sitemap when you can create it automatically; however it is limited to 500 pages so it is not always ideal.

Paid for Tools

We find most SEO and Webmaster tools that require payment or subscription to be no better than the free alternative or in some cases to be more damaging that useful. The only 2 I have/still use are:

1. SEOmoz – Many of the tools on SEOmoz are free, the monthly subscription provides added tools and access to certain tools without restriction. It also provides guides and some other minor added features. The main reason I have found for paying for this tool is the Keyword Rankings.
2. Wordze – Another keyword research tool. This is another tool I have paid for partly out of laziness, compared to the other keyword tools I find this very easy to use and can provide a large list of keywords in a very short time, I also think it is good to research Keywords from multiple sources in order to improve accuracy. This is especially so with Wordze as I have found some of its results a little odd/inaccurate in the past.