I want to provide links for smaller communities, some are better known, some not.
The Elder Scrolls communities
https://www.afkmods.com/ AFK Mods
http://tesalliance.org/forums/ TES Alliance Forums
https://www.wolflore.net/index.php Wolflore, adult PC gaming community
http://www.fliggerty.com/phpBB3/index.php Great House Fliggerty
https://discourse.modsinexile.com/ Mods in Exile, a new community site created by modders for modders
https://www.worldofelderscrolls.de/ World of Elder Scrolls german
https://www.elderscrollsportal.de/ Elderscrollsportal, german
https://www.the-elder-scrolls-skyrim.com/ An old site with downloads for Morrowind, english and german
https://www.baldurs-gate.de/index.php?forums/the-elder-scrolls.28/ Baldurs Gate, german
https://tamrielvault.com/ Tamriel Vault