Wayback Machine
web.archive.org
Browse over 800 billion archived web pages spanning decades of internet history.
The Wayback Machine captures snapshots of websites over time, letting you see how any page looked on a specific date. It preserves sites that have been deleted, redesigned, or taken down entirely.
Why it is useful
The only reliable way to access deleted or changed web content. Essential for research, journalism, and recovering content from sites that no longer exist.