Searches for data in repositories across the web. Make sure you check that the data is coming from a reputable source (look for .gov and .edu web addresses or times the data was cited by scholarly publications)
The goal of re3data is to create a global registry of research data repositories. It covers research data repositories from different academic disciplines for the permanent storage and access to datasets. It also aims to promote a culture of sharing, increased access and better visibility of research data.
Data.gov is the home of the U.S. Government’s open data. Here you will find data, tools, and resources to conduct research, develop web and mobile applications, design data visualizations, and more.