Archive.org is really old (in terms of internet age) - even before Google, who have used their services to index all archived web pages. They have also donated a lot of servers and cash to them. You can reasonably bet on archive.org outlasting other similar services.
👤 ksherlock
archive.is is sometimes useful for bypassing paywalls. Then sticking a captcha in front if it. archive.org has the wayback machine going back to the late 90s. Plus, music, videos software, books, bbs and usenet archives, ... massive amounts of information that you can't find online anywhere else.