The European Social Survey
- Data included: Covers over 30 nations. The questionnaires is approximately 240 questions and covers a wide range of social variables.
- Frequency of data collection: Every other year.
- Use of the data/Permissions: "The data are available free of charge and without restrictions, for not-for-profit purposes. To access data files, you have to register as an ESS data user."
World Values Survey
- Data included: The 2011-12 survey will cover at least 50 countries. The data collected is for the purpose of "studying changing values and their impact on social and political life."
- Frequency of data collection: Approximately every 5 years.
- Use of the data/Permissions: "These data files are available without restrictions, provided: a) that they are used for non-profit purposes; and b) correct citations are provided and sent to the World Values Survey Associations for each publication of results based in part or entirely on these data files. This citation will be made freely available; and c) the data files themselves are not redistributed."