Niche hobby communities, Fan communities and fandoms, Professional networking groups, Support communities and mutual aid
B3TAuser-submitted irreverent pictures, cartoons, animations, and games, alongside various community boards, in a retro aesthetic started in 2001 with the slogan "WE LOVE THE WEB!" Responsible for many early memes.(cross-category)
BoardGameGeekA comprehensive resource for board and card game enthusiasts, offering extensive ratings, reviews, videos, and photos from a community of experts.(cross-category)
DribbbleDesign community showcasing creative work and design inspiration.
GameDev.netcomprehensive resources, articles, and a community for individuals involved in game development.(cross-category)
Humanities CommonsAn open-access scholarly network that provides profiles, group collaboration spaces, and a repository for preprints, teaching materials, and conference papers in the humanities.(cross-category)
MemedroidCommunity-driven hub to browse, rate, and share trending and user-created memes.(cross-category)
MetaFilterA general-interest community weblog (since 1999) where members share and discuss noteworthy web finds and phenomena(cross-category)
Oregon HikersLong standing site offering hiking information for Oregon and southern Washington, community forum, a field guide, interactive maps, and a hike finder tool for individuals interested in outdoor recreation and exploring trails.(cross-category)
Something AwfulEarly comedy forum and Photoshop contest pioneer where many meme formats were born.
SummitPostmountaineering-focused wiki and forum where climbers and hikers contribute routes, peak conditions, and trip reports for thousands of summits worldwide.(cross-category)