Assorted /srg/-related resources:

List of streams: srg.evilsnurdeeps.com
Youtube channel: youtube.com/user/SpeedRunningGeneral
Hitbox team: hitbox.tv/team/speedrunning
Meme database: srg.booru.org
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General speedrunning resources and records:

speeddemosarchive.com — Hosts verified videos of speedruns, and hosts forums used for specific game discussion and marathon planning.
speedrunslive.com — Displays live streams and hosts speedrunning races.
tasvideos.org - Collection of tool-assisted speedruns and the community that creates them.
pksage.com/speedruns - Crawls Twitch and other sites to show list of all live speedrun streams, regardless of popularity.
tasvideos.org — Hosts tool-assisted speedruns to display total domination of games far past human limitations.