WordStream

I have been a Web Developer and PPC marketer for more than 15 years, and iSpionage is probably the most reliable competitor research tool I have ever used.

Keyword Tool Dominator (KTD) is a free keyword research tool with individual keyword search tools for Amazon, Bing search, eBay, Etsy, Google, Walmart, and YouTube.

Turn the algorithm into a friend. Make your business visible online with 55+ tools for SEO, PPC, content, social media, competitive research, and more.

Get more calls to your business, visits to your website, or foot traffic to your store. Use Google Ads (formerly Google AdWords) to grow your business.

Keywords Everywhere is a browser add-on for Chrome & Firefox that shows search volume, CPC & competition on multiple websites.