New SEO SpyGlass gets up to 3-5 times more backlinks and specifies every reason why your competitors rank higher than you do With Blekko added to the search engines list, SEO SpyGlass has become the most powerful industry standard backlink checker.
License: Shareware
OS Support: Linux, Mac OS X, Mac Other, WinXP, WinNT 4.x, WinNT 3.x, WinME, Win2003, Win2000, Win Vista, Linux Gnome, Unix, OS/2, Java, Windows 7

WebSite Auditor Professional is an effective SEO tool designed to handle all the aspects of on-page optimization analyzing your website structure and optimizing the content of each separate webpage to spare you hours of highly laborious work.
License: Shareware
OS Support: Linux, Mac OS X, Mac Other, Mac PPC, WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98, Win95, Linux Gnome, Unix, OS/2

Rank Tracker Professional is an A1 SEO rankings checker and peerless keywords generator It keeps track of your and your competitors' websites positions for unlimited number of keywords in 700search engines and discovers the most lucrative keywords.
License: Shareware
OS Support: Linux, Mac OS X, MAC 68k, Mac Other, Mac PPC, WinXP, Win2003, Win2000, Win Vista, Linux Gnome, Unix, OS/2, Java

Looking for a free SEO software tool that actually works? Try an unlimited free version of SEO PowerSuite - fast, safe and accurate toolkit finding keywords, checking rankings, getting you links, and doing onpage SEO - all in one killer SEO app.
License: Freeware
OS Support: Linux, Mac OS X, Mac Other, Mac PPC, WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98, Win95, Linux Gnome, Unix, OS/2, Java

Website Rankings Reports by Rank Tracker combine simplicity with the wealth of metrics they offer Check out easy-to-follow charts and eye-candy graphs, sort data by keyword or by search engine & choose from 4 types of reports.
License: Shareware
OS Support: Linux, Mac OS X, Mac Other, WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98, Linux Gnome, Unix, OS/2, Java

Doing Spanish & Hispanic SEO? Try Spanish version of SEO PowerSuite - a collection of 4 SEO tools helping you promote Spanish language sites and giving site-specific optimization advice via built-in SEO reports in Spanish and 6 other languages.
License: Shareware
OS Support: Linux, Mac OS X, Mac Other, Mac PPC, WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98, Win95, Linux Gnome, Unix, OS/2, Java

Hit first Google's spots with this gold nugget of an SEO tool SEO SpyGlass - peerless SEO software for competition research and analysis - digs up most detailed data on your competitors' backlink strategy and lets you outrank them like a breeze.
License: Shareware
OS Support: Linux, Mac OS X, Mac Other, Mac PPC, WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98, Win95, Linux Gnome, Unix, OS/2, Java

Two-in-one SEO tool: ultraprecise rankings checker and savvy keyword generator.
License: Shareware
OS Support: WinXP,Mac OS X,Windows2000,Windows2003,Unix,Linux,Java,Linux Gnome,Mac PPC,Mac OS X 10.5,Mac OS X 10.4,Mac OS X 10.3,Mac OS X 10.2,Mac OS X 10.1,Mac OS 9,MAC 68k,Win Vista

A breakthrough in backlink competition research for SEOs and webmasters.
License: Shareware
OS Support: WinXP,Mac OS X,Mac Other,Windows2000,Windows2003,Win98,WinME,WinNT 4.x,Win95,Unix,Linux,Java,Linux Gnome,Mac PPC,Mac OS X 10.5,Mac OS X 10.4,Mac OS X 10.3,Mac OS X 10.2,Mac OS X 10.1,Mac OS 9,Win Vista

Rank Tracker is a rank monitoring tool that checks your site's ranking in 700search engines worldwide, suggests efficient keywords using 16 advanced keyword research methods, keeps track of your ranking history and generates detailed custom reports.
License: Shareware
OS Support: Linux, Mac OS X, Mac Other, WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98, Linux Gnome, Unix, OS/2, Java