LinkAssistat is a powerhouse SEO tool for link building and management This ace-high SEO software lets you find valuable link partner, generate and upload link directory pages, manage email inside the software, check if partners link backand more!.
License: Shareware
OS Support: Linux, Mac OS X, Mac Other, WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98, Win95, Linux Gnome, Unix, OS/2, Java

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

SEO PowerSuite is a blend of 4 muscle thick SEO tools: Rank Tracker (to check rankings and find great keywords), WebSite Auditor (to optimize page content), SEO SpyGlass (to harvest backlinks) and LinkAssistant (to build and manage links campaigns).
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

LinkAssistant Enterprise is the top-flight SEO tool to make link building a breeze Discover best quality backlinks, easily generate link directories, manage email correspondence, verify backlinks and break the way to Google's top!.
License: Shareware
OS Support: Linux, Mac OS X, Mac Other, WinXP, WinNT 4.x, WinME, Win2003, Win2000, Win Vista, Win98, Win95, 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

SEO in Practice is a 100% practice-driven SEO guide that not onlyteaches you life-tested SEO methods but also tells you how exactly youcan apply them to your own website Without paying a penny you'll learnhow to promote your website like a pro.
License: Freeware
OS Support: Linux, Linux Console, Mac OS X, Mac Other, Mac PPC, WinXP, WinNT 4.x, WinNT 3.x, WinME, Win2003, Win2000, Win Vista, Win CE, Win98, Win95, Linux Gnome, Symbian, Pocket PC, Palm OS 3.2, Palm OS 3.1, Palm OS 3.0, Palm OS 2.1, Palm OS 2.0, Palm OS 1.0, Unix,

Your competitors' worst nightmare: a fantastically feature-rich and user-friendly set of SEO tools to push your website straight to Google's top and give competitors not a single chance to outrank you.
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

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

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