There are many research organizations making data available on the web, but still no perfect mechanism for searching the content of all these collections. The links below will take you to data search portals which seem to be among the best available. Note that these portals point to both free and pay sources for data, and to both raw data and processed statistics.
* Resources that are not entirely free are marked with an asterisk.
Have you found fantastic numeric information in a less-than-ideal format, such as PDF or HTML? Here are some software products that may help you transform those formats into numbers that you can read into a spreadsheet or statistical software program. Some of these are free or offer limited time, free trials:
Feeling intrigued, but unsure how to leverage web-based data for your own research? Here are some how-to guides:
These are some of the most significant datasets available on the internet, arranged by topic. Almost everything here is freely available. The few that do involve fees are marked with asterisks (*). Note that some of the listings below are also available in ICPSR.
Political Science/Public Policy
Business and Economics
*Resources that are not entirely free are marked with an asterisk