The best way to browse for data is to look through a list of data portals that may offer relevant information. Unfortunately, maintaining an up-to-date and comprehensive list of the thousands of data portals being managed by governments, companies, and organizations all over the world can be extremely challenging due to the constant public release of new portals and changes in URLs to existing portals. Consequently, this guide provides links to the best lists of open data portals on the internet rather than attempting to recreate the work that others are already doing so well. The data portal lists provided by this guide are the best available on the internet, but that does not mean that they are perfect.