What is the best value for money SEO software?

[Jake]

The Google Webmaster Tools offer free site analysis to assist in on site optimization.

For many, employing a freelancer in possession of automation tools is most cost effective. They can be found in sections of Webmaster and Internet Marketing forums.

Heavy duty spam automation tools, like those that locate blogs and post thousands of "flatter spam" comments are a a plague the internet could do without and provide marginal value.

One not inexpensive tool is the newly renovated SEnukeX it helps streamline the routine methods used to get free, lower grade links including blog comments, forum posts and article site submissions, it's viewed as evil by some but involved some degree oversight to operate. This tool may only be cost effective for owners of multiple sites.

Market Samuri, more geared for marketing research does have facilities for locating blog comment candidate sites and for doing keyword research.

Again, rather than investing in software you may be better off using online services that help streamline the process of social bookmarking, uploading promo videos, etc. there are also paid backlink services (not approved by search engines) who own their own online assets where they can provide search rank raising backlinks to your site, these links can be more valuable than the free ones automation tools can obtain. A significant number of paid links may not identified as such by the search engines and actually provide ranking benefit.