Reddit is the best platform for online communities and discussion forums, used by millions of users worldwide.

Threads is a social media platform for sharing ideas and connecting with others.

Gambling Therapy is a global service offering free practical advice and emotional support for anyone affected by problem gambling, including self-help and forums.

CSDN is a professional developer community platform providing original content, technical forums, and resources for IT professionals.

Douban provides recommendations, reviews, and price comparisons for books, movies, and music, alongside local cultural life and community forums.

Postimages is a free image hosting and uploading service providing permanent links for forums, blogs, and social media.

SMF is free, open-source forum software written in PHP/MySQL, providing powerful, customizable community bulletin board features for setting up online forums.

Gentoo Linux is a highly flexible, source-based Linux distribution known for customization, used by advanced Linux users and system administrators.

MyAnimeList is the most active online anime and manga database and community for fans to track lists, read reviews, and explore forums.

ImgBB is a free image hosting and sharing service that allows users to quickly upload pictures, get direct links, and embed images on forums and websites.

Eklablog is a free and easy-to-use blogging platform offering tools, community forums, and a blog directory for French-speaking users.

WordReference is the best online dictionary for language translation and is used by students and professionals worldwide.

ProBoards is the largest host of free online discussion forums, offering unlimited members, posts, and customization with 24/7 support.

GPWA is the professional association for gambling portal webmasters and affiliates, offering forums, news, and an industry seal of approval.

Ubuntu Forums is the official community hub for users seeking technical support, project discussion, and news related to the Ubuntu operating system.

vBulletin is community software for building forums and social sites, offered as self-hosted vBulletin 6 or managed vBulletin Cloud.

AnandTech Forums is a technology community for hardware, software, and deals discussions, offering solutions and expert answers to nearly half a million members.

The Mighty is a health community platform connecting people with chronic illness, mental health, and disability to share stories, advice, and resources.

Leading tech publication with news, reviews, and community forums.

Android Forum for Mobile Phones, Tablets, Hardware & App Development

dict.cc is a multilingual online dictionary focusing on community-driven German-English translations, vocabulary training, and language forums.

Portal Contábeis is a major online community and resource hub for accounting, tax, HR, and business professionals in Brazil, offering forums, news, and tools.

Engineering.com is a global online hub providing engineers with industry news, technical resources, job listings, and community forums across various engineering disciplines.