You can use the Hoovers database to create lists of companies based on a variety of criteria.
You'll then be brought to a page that will allow you to create a list of companies based on criteria that you choose, such as location, size industry type, etc.:
For example, say you're interested in companies in the computer software manufacturing industry located in California. Type in the location in the appropriate box:
Next, choose the appropriate industry type after clicking the “Browse” button in the industry section of the database and click the “Submit” button:
A list of companies based on the entered criteria will appear:
You can focus your results easily by adding additional criteria:
For additional help you can click on Support at the top right of the database page: