Keyword Tool
These online keyword tools will help you research and generate keywords for SEO and PPC campaigns.

Price: $99/249/mth | Tags: seo tools, social media tools, social media monitoring tools, adwords tool, ppc tools, link building tools, seo ranking tool, keyword tool, backlink checker, white label seo
Raven Tools is a marketing platform with SEO tools, social media tools, adwords tools, and white label SEO. Features: unlimited Facebook/Twitter accounts, custom domains, unlimited users, link manager, keyword manager, and SERP tracker.

Price: $89.95-995.95+/mth | Tags: keyword tool, ppc tools, adwords tool, seo ranking tool, affiliate marketing software
KeywordSpy online keyword tool helps you spy on your competitors' keywords. Features: 127 million keywords, daily database updates, top keyword lists, SEO/PPC plug-in, real-time PPC/SEO tracking, uncover super affiliates, 300 affiliate networks, and ROI indicator.

Price: $69/mth | Tags: keyword tool
Wordtracker's keyword tool helps you find and generate keywords for SEO and PPC campaigns. Features: find long tail keywords, steal your competitors' keywords, KEI (Keyword Effectiveness Index) indicator, site audit, track your site's ranking, competition algorithm, online training, and keywords webinar.

Price: $69.95-995/mth | Tags: keyword tool
Keyword Discovery's keyword tool helps you find keywords for SEO and PPC campaigns. Features: 38 billion searches, eBay keyword database, spelling mistake research, seasonal search trends, KEI analysis, domain researcher tool, 200+ search engines, domain drop reports, industry keywords, and XML API access.

Price: $69/97/mth | Tags: keyword tool
Strategizer, by Wordtracker, is an online keyword tool that helps you to find your site's most profitable keyword niches. Features: track your site's performance, target keyword niches, analyze trend reports, track 1,000 keywords on Google's search results pages, Google's estimates of seasonal trends, and works with Google Analytics.

Price: free/$49-799/mth | Tags: seo tools, keyword tool, seo ranking tool, link building tools, backlink checker, search engine submission software, directory submission software, website auditor, white label seo
Web CEO Online SEO tools will help you improve your website's search engine rankings. Features: on-page optimization, keyword tool, website audit, rank checker, web analytics, backlink checker, content submission, and buzz tracker.

WordStream online PPC tool helps you build and optimize large PPC campaigns on AdWords and Bing Ads. Features: 1 trillion keywords, keyword discovery tools, AdWords/Bing Ads integration, campaign builder, ad group builder, smart bid management tools, and cross-platform analytics.