Stack Overflow

A question-and-answer platform for programmers.

Viber

A free, cross-platform instant messaging and calling application owned by Rakuten.

Yelp

An American crowd-sourced review platform where users publish ratings and written feedback about local businesses.

Xing

A German career-oriented social networking platform focused on professional connections across industries mostly in the German-speaking market.

Academia

A social networking platform for academics that enables users to share research papers, build professional profiles, and connect with other researchers worldwide.

Meetup

A social media platform for organizing in-person activities and meeting people in your local area.

Google Groups

A Google service that provides discussion groups for people sharing common interests.

Goodreads

A book-based social media platform owned by Amazon.

Keybase

A key directory, secure messaging and file sharing platform.

Strava

A fitness tracking app and community-moderated social network for athletes.

Truth Social

An American social media platform owned by Trump Media & Technology Group and primarily oriented toward conservative audiences.

A Chinese microblogging website.

OK.ru

A Russian social networking service with more than 300 million registered users.

Flipboard

A social news aggregator and content discovery platform.

Kununu

An online employer review and workplace transparency platform focused on German-speaking countries, where current and former employees rate companies and share job-related experiences.

Steemit

A blockchain-based blogging and social media website.

Product Hunt

A platform for discovering and sharing new technology products, including apps, tools, and services.

Scribd

A digital document library and reading subscription service that provides access to millions of e-books, audiobooks, magazines, and user-uploaded documents.

QQ

A Chinese instant messaging software platform.

Hugging Face

A machine learning and data science platform and community that helps users build, deploy and train machine learning models.

Gitter

An open-source chat and networking platform for software developers based on the Matrix protocol.

Letterboxd

A social media platform for film lovers.

Beehiiv

A comprehensive newsletter platform designed to help creators and brands build, grow, and monetize their audiences.

HackerOne

A cybersecurity platform that connects businesses with ethical hackers, penetration testers and cybersecurity researchers.

Plurk

A micro-blogging and social networking service.