This Google search tool allows user to query for open data sets from 131 organizations that produce big data, including: Eurostat, Destatis, Statistics Ireland, US Bureau of Labor Statistics, the Central Statistics Office (Ireland), the World Bank, the OECD, the World Economic Forum, WHO, OMB, and the IMF. Users may compare data sets and create visualizations.

• “The Google Public Data Explorer allows users to upload their own datasets for visualization and exploration.
  To get started:
  1. Describe your dataset using the Dataset Publishing Language (DSPL), an open, XML-based metadata format optimized for data visualization. See the documentation on Google Code for more information.
  2. Bundle your data and metadata into a single Zip file, and upload it using the button below.
  3. Preview, share, and publish your dataset for others to see and use.
  If you’re an official data provider and you would like to add your data to the directory, please follow this link.
  If you have questions or feedback, please post a message in the DSPL discussion forum.”