archive.org: the original
archive.is: webpage capture for paywall workaround
the eye: internet preservation
anna's archive: giant library (mirrored from scihub, libgen, etc)
IFixIt medical devices: crowdsourced medical device repair
ArchiveTeam: collection of resources as well as currently active archival projects
sound fx: 25gb of royalty free sound effects
halley labs: permissively licensed samples+stems from halley labs
arxiv: stem papers
psyarxiv: arxiv for psychology
medRxiv: arxiv for medicine
archiving urls: gwern on how to archive urls!
imessage exporter: exports imessage data in full
discord exporter: exports discord data in a variety of formats
reddit media downloader: automatically downloads all media from a given user and deletes duplicates. yes, people use this for porn
archivebox: self-hosted web archiver
yt-dlp: youtube video/audio downloader
r/DataHoarder: datahoarding subreddit
archiving initiatives: wikipedia list of web archival projects