WordStream

Wordstream, the eponymous offering from the company in Boston, MA, provides a free tool for analyzing performance "grading" an Adwords campaign, beyond which, Wordstream Advisor provides (for a fee, though a free trial is available) recommendations to optimize a paid advertising campaign on Google, Bing, and Yahoo! search engines, and place ads. Beyond the platform, Wordstream also offers full account management services, for outsourcing one's campaign, and white labeling for agencies. Wordstream tools are available for $199 per month for search spend of up to $2,500 per month, or $319 monthly for search spend between $2,500 and $5,000 per month. $399 monthly buys Wordstream for spend between 5 and 10k, and, should that be insufficient, custom quotes are available.

Marin Software and Broadlume are common alternatives for WordStream.