Search the profiles of professionals around the world. People list themselves on LinkedIn and create their own professional profile including their current and past companies and job titles, city, industry, and their education.

Free people search - find people on social networks and across the Web. Find people using name search, location, school, work, interests, and more.

Enter a question or calculation and Wolfram|Alpha uses its built-in algorithms and data to get the answer. A huge set of information and tons of models, methods, and algorithms that make it possible to compute whatever can be computed about anything

Look up a person's street address and their telephone number.

Good for people in the United States and Canada.

Find a person's address and phone number

Give Yahoo's email address search tool someone's name, and get a list of email addresses

Find a person's name and street address from a US or Canadian telephone number.

Find a person's address (including postal code) and telephone number in Canada

MyFreeEmailSearch.com contains the world's largest publicly available directory of email addresses, which can be used to locate old friends and classmates, find current information related to email, address, and phone, and access to profiles from over 20 social networking sites.

Look up the telephone area code for a given city

Look up the city for a given telephone area code

Look up whose name and telephone number is associated with a street address in the United States or Canada, a 'reverse address lookup'

Look up the US ZIP Code or Canadian Postal Code for a given city

Look up the city for a given ZIP or Postal code

Find a person's email address

Find out who owns an email address