• Web CEO - Web CEO is a powerful software suite designed to provide businesses with a fast, reliable, and cost-effective solution for web site promotion. Altogether, Web CEO is a unified workspace for twelve programs that help you attain real results in search engine marketing, perform intelligent web traffic analysis, effectively manage your online estate, and easily maintain it. If you take promotion of your site seriously, it is the Software you have been seeking for so long.
• IBP - IBP offers everything you need to successfully promote your website. IBP is a proven suite of professional web promotion tools that helps you with all aspects of website promotion and search engine optimization.
• SEO Elite - SEO Elite Search Engine Optimization Software (SEO) is the internet’s #1 SEO Link Popularity Software to analyze links, build link partners, add reciprocal links to your links pages and get a top search engine ranking!

There can be others software that people use and prefer but in my openion the above listed softwares are the best in the SEO industry