According to TopSEOs.com,
Best SEO Software vendors in January 2012 are as it follows:
Rank 1
SEO PowerSuite (Link-Assistant.Com Llc.) - http://www.link-assistant.com/
Minsk, Belarus
Clients: Microsoft, Panasonic, MasterCard, Sun (Oracle), Disney
Revenue: $3 million - $4,999,999
Rank 2
Searchmetrics - http://www.searchmetrics.com
NY, New York
Clients: Siemens, Symantec, Lufthansa, Crate&Barrel, Zeta Interactive
Revenue: $3 million - $4,999,999
Rank 3
Conductor - http://www.conductor.com/
New York, New York
Clients: Progressive, Mimeo, Ektron, The Ladders, Sentrigo
Revenue: $3 million - $4,999,999
Rank 4
WebPosition - http://www.webposition.com/
New York, New York
Clients: Rapid Travel, King Submit, Envision Domains
Revenue: $3 million - $4,999,999
Rank 5
Web CEO LTD - http://www.webceo.com/
Kherson, Ukraine
Clients: GSK, Stryker, Hitachi, Weyerhaeuser, IBM
Revenue: $5 million - $9,999,999
Rank 6
Internet Business Promoter -
56424 Staudt, Germany
Clients: Microdirect.co.uk, dpmg.com, zurich.com, canon.ch, lexmark.com
Revenue: $5 million - $9,999,999
Rank 7
Seo Elite - http://www.seoelite.com/
Albert Lea, Minnesota
Clients: Draw Me Something, T-Post, French Corner Soho, Castlebrook Barns
Revenue: $1 million - $2,999,999
Rank 8
Linkdex Limited - http://www.linkdex.com/
London, United Kingdom
Clients: Confidential
Revenue: $5 million - $9,999,999
Rank 9
SEOintelligence™ - http://www.seointelligence.com/
Karnataka, India
Clients: TrojanWire Inc.
Revenue: $1 million - $2,999,999
Rank 10
Advanced Web Ranking
Dolj, Romania - http://www.advancedlinkmanager.com/
Clients: SONY, SIEMENS, amazon.com, Hilton, AOL
Revenue: $1 million - $2,999,999
