MSN Live Search services include MSN Hotmail, MSN Messenger, MSN Search, Groups, Shopping, and Personal Finance.

Microsoft Digital Advertising Solutions provides solutions for marketers to connect with their target consumers across multiple digital touchpoints.

Google provides web search as well as specialized search.

Google News (including archives)
Google Patents
Google Product Search
Google Scholar (Scholarly papers)
Google Special Searches (including Public Service & Government)
Google Video Search

Yahoo! provides search services as well as a variety of marketing products.

Local Advertising 
Target prospective customers searching for businesses in your area on Yahoo! Local—and drive them to your web pages or physical location.

Search Submit
 Help expand your reach by ensuring that your business appears in our natural (non-sponsored) search results index.

Product Submit 
Reach millions of motivated potential buyers through the Yahoo! Shopping product search, Gift Finder and Buyer’s Guide pages

Travel Submit 
Help increase your bookings by promoting your offers and deals to eager travelers on Yahoo! Travel.

Email Marketing 
Boost web site traffic and build customer loyalty with Campaigner® easy-to-use email marketing tools.

Technology Solutions
Advertisers, technology providers and agencies: Build a better business with our API Programs.