File & internet repositories - Defacto2/defacto2.net GitHub Wiki

DiscMaster - Instant search of archive.org for vintage image, audio, video and CD-ROMs.
Wayback Machine - Explore nearly 1 trillion web pages saved over time.
textfiles.com - Text file collections from the BBS era.
16colors - ASCII, ANSI art and scene adverts from 1990 onward.