Data Libraries

• UCI Machine Learning Repository
• UCI KDD Archive UCI Knowledge Discovery in Databases Archive
• UW XML Repository University of Washington XML Data Repository
• StatLib Data, Software and News from the Statistics Community
• Time Series Analysis and Its Applications Book Example Data
• Time Series Data Library
• TimeWeb Web-based time series databanks
• PKDD 2000 Challenge Challenges of European Conferences on Principles and Practice of Knowledge Discovery in Databases
• PhysioNet the research resource for complex physiologic signals
• MatrixMarket A visual repository of test data for use in comparative studies of algorithms for numerical linear algebra, featuring nearly 500 sparse matrices from a variety of applications, as well as matrix generation tools and services.
• LifeLine project Visualising Migrations, Transitions and Trajectories
• 10x10 Every hour, 10x10 gathers the 100 most important words and pictures in the world, based on what's happening in the news.
• InfoVis Cyberinfrastructure Data Bases
• Enron Email Dataset
• Historical Stock Data Historical Data for S&P 500 Stocks
• Ensembl Provides sequence databases of gene, transcript and protein predictions.
• EPA air quality AirData Web site gives you access to air pollution data for the entire United States.
• Network intrusion dataset
• Internet Backbone Data Internet Mapping Project
• UCR Time Series Data Mining Archive A resource for researchers interested in the clustering, classification, indexing, segmentation, change point detection and rule extraction of time series. (by Eamonn Keogh)
• Deutsche Bundesbank Zeitreihen
• Source data sources of the Worldmapper project (Worldmapper project)
• Worldbank Development Data & Statistics
• Business Intelligence Network 2006 Data Visualization Competition (Excel spreadsheet)
• Timeseries by Eamonn Keogh et al.
• U.S. Department of Labor Bureau of Labor Statistics
• National Atlas
• UK Air Quality Archive Air Quality data in the UK from the present back to 1960
• Mitsubishi Electric Research Labs (MERL) Motion sensor data from a network of over 200 sensors for a year (WMD 2007).
• European Road Safety Observatory Road Safety Data
• CARE Community database on road accidents resulting in death or injury (EU)
• IRTAD international database that gathers data on traffic and road accidents from 28 out of the 30 OECD Member countries
• Trends Online A Compendium of Data on Global Change
• Finder! Finder is a browser-based application for finding, organizing and sharing GeoData in common formats.
• ICWSM 2009 Data Challenge data set containing 44 million blog posts; suitable for link analysis, social network extraction, analysis of influence among bloggers, ...
• CKAN Comprehensive Knowledge Archive Network
• Numbrary Numbrary is a free online service dedicated to finding, using and sharing numbers on the web.
• Infochimps Free Redistributable Rich Data Sets
• CISL Research Data Archive CISL Research Data Archive (RDA) - large and diverse collection of meteorological and oceanographic observations, operational and reanalysis model outputs, and remote sensing datasets
• CISL Research Data Archive CISL Research Data Archive (RDA) dataset selection according to variables, time resolution, etc.
• pachube a service that enables you to connect, tag and share real time sensor data from objects, devices, buildings and environments around the world.

InfoVis Contest Datasets

• InfoVis 2003 Contest Tree data
• InfoVis 2004 Contest Meta Data of publications
• InfoVis 2005 Contest Technology Trends in the United States
• InfoVis 2006 Contest 1% public use microdata sample from the 2002 Census
• InfoVis 2007 Contest Movie Database

Other Lists

• Jeff Klingner's List of Online Databases