Archived Data (General)

Maintained by the Internet Archive, you can search the Wayback Machine for specific URLs or specific collections of archived data. Want to know what data NASA website hosted in 2000, have a look in the Wayback Machine!

Use Archive-It to collect and access worldwide cultural heritage on the web.

Harvard Law School Library Innovation Lab has created a data vault to download, sign as authentic, and make available copies of public government data that is most valuable to researchers, scholars, civil society and the public at large across every field. As a first step, they have collected the metadata and primary contents for over 300,000 datasets available on data.gov and will be releasing the data in the near future.

Find prior versions of web pages (called "Mementos" in this service) in: "archive.today, Archive-It, Arquivo.pt: the Portuguese Web Archive, Bibliotheca Alexandrina Web Archive, DBpedia archive, DBpedia Triple Pattern Fragments archive, Canadian Government Web Archive, Croatian Web Archive, Estonian Web Archive, Icelandic web archive, Internet Archive, Library of Congress Web Archive, NARA Web Archive, National Library of Ireland Web Archive, perma.cc, PRONI Web Archive, Slovenian Web Archive, Stanford Web Archive, UK Government Web Archive, UK Parliament's Web Archive, UK Web Archive, Web Archive Singapore, WebCite, Bayerische Staatsbibliothek," and more. Provides a Memento Time Travel Extension for Chrome.

This website is intended to be an offloading point and information depot for a number of archiving projects, all related to saving websites or data that is in danger of being lost.

Tool created by Jerome Paulos to show side-by-side changes in government websites. Use this tool to compare older and newer versions of government data sources.

The Data Rescue Project is a coordinated effort among a group of data organizations with a goal to serve as a clearinghouse for data rescue-related efforts and data access points for public US governmental data that are currently at risk.

The Library of Congress web archives are organized in thematic and event-based collections, and contain websites documenting a variety of U.S. and international organizations representing a broad range of subjects and topic areas. Examples include select U.S. government sites from the Legislative, Judicial, and Executive branch agencies; select foreign government sites; campaign websites and political parties documenting U.S. and select foreign elections; non-profit organizations; journalism and news; creative sites such as those documenting comics, music, authors, and art; legal sites; and international organizations.

"The FDLP Web Archive provides point in time captures of U.S. Federal agency websites, while preserving the functionality of the site to the extent possible. The aim is to provide permanent public access to Federal Agency Web content. GPO harvests and archives the websites with Archive-It."

"As the repository of the official records of Congress, the Center for Legislative Archives conducts a web harvest of all congressional websites at the end of each Congress."

DataLumos is an ICPSR archive for valuable government data resources. You can find older versions of a lot of major data here, including a recent addition from the CDC.

Free, open-source platform focused on making American Community Survey (ACS) data more accessible, including the recent upload of the 2022 1-Year ACS data.

IPUMS provides census and survey data from around the world integrated across time and space. IPUMS integration and documentation makes it easy to study change, conduct comparative research, merge information across data types, and analyze individuals within family and community contexts. Data and services available free of charge.

The End of Term Web Archive contains federal government websites (.gov, .mil, etc) in the Legislative, Executive, or Judicial branches of the government. Websites that were at risk of changing (i.e., whitehouse.gov) or disappearing altogether during government transitions were captured.

Democracy's Library brings together more than 700 collections from over 50 government organizations, archived by the Internet Archive since 2006.

The Environmental Data & Governance Initiative (EDGI) is a research collaborative and network of diverse professionals promoting evidence-based policy-making and public interest science that advances the Environmental Right to Know (ERTK).

Includes hundreds of resources—from datasets to case studies—to inform policymaking in coastal cities.

The Public Environmental Data Project is committed to preserving and providing public access to federal environmental data. Check their page for a list of the most recent data uploads.

A joint initiative of the Sabin Center for Climate Change Law and the Climate Science Legal Defense Fund. This resource tracks government attempts to restrict or prohibit scientific research, education or discussion, or the publication or use of scientific information.

Data uploaded by the Climate Change and Health Research Coordinating Center (CAFE).
Includes CDC's Social Vulnerability Index data. Most of the data included here focuses on health and the environment.

USAID data including seven tables that outline US foreign aid funding prior to February 2025.

Backup of the overseas loans and grants Greenbook Data created February 3, 2025.

A team of volunteer archivists has recreated the Centers for Disease Control website exactly as it was on January 20, 2025. The site is currently being hosted in Europe.

Datasets from the Centers for Disease Control for years prior to 2025.

Data uploaded by the Climate Change and Health Research Coordinating Center (CAFE).
Includes CDC's Social Vulnerability Index data. Most of the data included here focuses on health and the environment.

The Caselaw Access Project (“CAP”) expands public access to U.S. law. The goal is to make all published U.S. court decisions freely available to the public online in a consistent format, digitized from the collection of the Harvard Law School Library.