What is the name of the Internet Archive's service for viewing archived web pages?

The Internet Archive’s service for viewing archived web pages is the Wayback Machine. It lets users enter a URL and inspect saved versions of websites from different dates.

The service was publicly launched in 2001 by Internet Archive founders Brewster Kahle and Bruce Gilliat. Its purpose was to preserve web content that might disappear when pages are changed, domains expire, or websites shut down. The name refers to the time-traveling machine from the animated series The Rocky and Bullwinkle Show.

The Wayback Machine is not a perfect recording of the entire web. Crawlers cannot capture every page, and interactive features, forms, JavaScript applications, videos, images, or content blocked by site owners may be missing or incomplete. A saved page may therefore look different from the original.

The Internet Archive began collecting web pages before the public service opened. By its launch, the archive already contained billions of pages, making the Wayback Machine one of the best-known tools for researching the changing history of the web.