23snaps Ltd. is a free, private social network and photo sharing service for families that allows parents to save photos, videos, measurements and stories of their children to a digital journal and privately share those updates with other family members or close friends

Academia.edu is a for-profit open repository of academic articles free to read by visitors. Uploading and downloading is restricted to registered users. Additional features are accessible only as a paid subscription. Since 2016 various social networking utilities have been added.

ASKfm is a Latvian question and answer network launched in June 2010 as a competitor to Formspring. After registration, the user fills out their profile and can ask questions, reply on their profile, create photo polls.

Badoo is a dating-focused social network founded by Russian entrepreneur Andrey Andreev in 2006. It is headquartered in Limassol, Cyprus and London, United Kingdom, with offices in Malta, Russia and the United States.

beBee is a business and employment-oriented online service that operates via a website. The platform allows businesses to post jobs and users to post their CVs and interests.

Blind is an app that provides an anonymous forum and community for verified employees to discuss issues. Users on Blind are grouped by topics, company and their broader industry.

Caffeine is a social broadcasting platform that delivers live, interactive content at the intersection of gaming, sports, and entertainment. Caffeine has raised $146 million to date from investors in 3 rounds led by 21st Century Fox, Andreessen Horowitz, and Greylock Partners.

CaringBridge Inc. is a charitable 501 non-profit organization established in 1997 which allows people facing various medical conditions and their family and friends to communicate.

CloutHub is a non-biased social network for people engaged in meaningful civic, social and political issues, causes and capaigns they care about.

Crunchyroll is an American subscription video on-demand over-the-top streaming service owned by Sony Group Corporation.

Discord is an instant messaging and VoIP social platform. Users have the ability to communicate with voice calls, video calls, text messaging, media and files in private chats or as part of communities called "servers".

eToro is a social trading and multi-asset investment company that focuses on providing financial services. Its headquarters are located in Central Israel, and the company has registered offices in Cyprus, the United Kingdom, the United States, and Australia.

Fark is a community website created by Drew Curtis that allows members to comment on a daily batch of news articles and other items from various websites.

Flickr is an image hosting and video hosting service, as well as an online community, founded in Canada and headquartered in the United States. It was created by Ludicorp in 2004 and was a popular way for amateur and professional photographers to host high-resolution photos.

Foursquare Swarm is a mobile app that allows users to share their locations with their friends and create a record of their experiences in a personal lifelog. Swarm launched for iOS and Android devices on May 15, 2014.

Gaia Online is an English-language, anime-themed social networking and forums-based website with Chibi-style animations.

HalloApp is a digital space for people users actually know and want to connect with. Users can use their phone number to connect with friends, family, and colleagues they're already connected to through their address book.

imo is a proprietary audio/video calling and instant messaging software service. It allows sending music, video, PDFs and other files, along with various free stickers. It supports encrypted group video and voice calls with up to 20 participants.

Instructables is a website specializing in user-created and uploaded do-it-yourself projects, currently owned by Autodesk. It was created by Eric Wilhelm and Saul Griffith and launched in August 2005. Instructables is dedicated to step-by-step collaboration among members to build a variety of projects.

Kuaishou Technology is a Chinese publicly traded partly state-owned holding company based in Haidian District, founded in 2011 by Hua Su and Cheng Yixiao. The company is known for developing a mobile app for sharing users' short videos, a social network, and video special effects editor.

Letterboxd is an online social networking service co-founded by Matthew Buchanan and Karl von Randow in 2011. It was launched as a social app focused on sharing opinions about, and love of film, and is maintained by a small team in Auckland, New Zealand.

LinkedIn is a business and employment-focused social media platform that works through websites and mobile apps. It was launched on May 5, 2003. It is now owned by Microsoft.

Lnk.Bio is a simple web-based tool that uses the official Instagram API. The link in bio is a clickable URL in social media profiles that takes visitors to a separate website, whether it's your own website or the landing page of a particular product you are currently promoting.

Medium is an American online publishing platform developed by Evan Williams and launched in August 2012. The platform is an example of social journalism, having a hybrid collection of amateur and professional people and publications, or exclusive blogs or publishers on Medium, and is regularly regarded as a blog host.

Messenger is an American proprietary instant messaging app and platform developed by Meta Platforms. Originally developed as Facebook Chat in 2008, the company revamped its messaging service in 2010, released standalone iOS and Android apps in 2011, and released standalone Facebook Portal hardware for Messenger calling in 2018.

Mix is a new personalized discovery platform that unlocks more of the internet. A place to discover, curate and share the things you're most passionate about.

Mozilla.social is a publicly accessible instance in the Fediverse on Mastodon. The Fediverse is a network of independent online community platforms that share a common set of technical standards. Mastodon is part of the Fediverse and is a decentralized social media platform.

Myspace is a social networking service based in the United States. Launched on August 1, 2003, the site was the first social network to reach a global audience and had a significant influence on technology, pop culture and music.

Omegle is a free online chat website that allows users to socialize with others without the need to register. The service randomly pairs users in one-on-one chat sessions where they chat anonymously using the names "You" and "Stranger".

Peanut, a product of Peanut App Ltd. is an online community for women who are planning to become pregnant, women who are pregnant, women who have had children, and women who are experiencing menopause.

Pinterest is an American image sharing and social media service designed to enable saving and discovery of information like recipes, home, style, motivation, and inspiration on the internet using images and, on a smaller scale, animated GIFs and videos, in the form of pinboards.

Quora is a social question-and-answer website and online knowledge market headquartered in Mountain View, California. It was founded on June 25, 2009. Users can collaborate by editing questions and commenting on answers that have been submitted by other users.

Reddit is an American social news aggregation, content rating, and discussion website. Registered users submit content to the site such as links, text posts, images, and videos, which are then voted up or down by other members.

Shopify Inc. is a Canadian multinational e-commerce company headquartered in Ottawa, Ontario. Shopify is the name of its proprietary e-commerce platform for online stores and retail point-of-sale systems.

Sked Social is a social media scheduling platform that allows users to create, plan, schedule, edit and analyze their social media content on popular social channels including: Instagram, Facebook, Linkedin, Google My Business and Pinterest.

Snapchat is an American multimedia instant messaging app and service developed by Snap Inc., originally Snapchat Inc. One of the principal features of Snapchat is that pictures and messages are usually only available for a short time before they become inaccessible to their recipients.

Stack Exchange is a network of question-and-answer websites on topics in diverse fields, each site covering a specific topic, where questions, answers, and users are subject to a reputation award process. The reputation system allows the sites to be self-moderating.

Steemit is a blockchain-based blogging and social media website. Users can gain a cryptocurrency, STEEM, for publishing and curating content. The company is owned by Steemit Inc., a privately held company based in New York City and a headquarters in Virginia.

Telegram Messenger is a globally accessible freemium, cloud-based and centralized instant messaging service. The application also provides optional end-to-end encrypted chats and video calling, VoIP, file sharing and several other features.

TikTok, whose mainland Chinese counterpart is Douyin, is a short-form video hosting service owned by ByteDance. It hosts user-submitted videos, which can range in duration from 3 seconds to 10 minutes. Since their launches, TikTok and Douyin have gained global popularity.

Triller is an American video-sharing social networking service. The service allows users to create and share short-form videos, including videos set to, or automatically synchronized to music using artificial intelligence technology.

Twitch is an American video live streaming service that focuses on video game live streaming, including broadcasts of esports competitions, in addition to offering music broadcasts, creative content, and "in real life" streams.

Upwork Global Inc., formerly Elance-oDesk, is an American freelancing platform. The company was formed in 2013 as Elance-oDesk, after the merger of Elance Inc. and oDesk Corp. The merged company was subsequently rebranded to Upwork in 2015.

Vero is a social media platform and mobile app company. Vero markets itself as a social network free from advertisements, data mining and algorithms.

Vimeo, Inc. is an American video hosting, sharing, and services platform provider headquartered in New York City. Vimeo focuses on the delivery of high-definition video across a range of devices. Vimeo's business model is through software as a service.

We Heart It is an image-based social network. We Heart It describes itself as "A home for your inspiration" and a place to "Organize and share the things you love."

WhatsApp is a freeware, cross-platform, centralized instant messaging and voice-over-IP service owned by United States tech conglomerate Meta Platforms. It allows users to send text, voice messages and video messages, make voice and video calls, and share images, documents, user locations, and other content.

XING is a Hamburg-based career-oriented social networking site, operated by New Work SE and owned mainly by Hubert Burda Media. The site is primarily focused on the German-speaking market, alongside XING Spain, and competes with the American platform LinkedIn.

YouTube is an American online video sharing and social media platform headquartered in San Bruno, California.

Zoom Video Communications, Inc. is a communications technology company headquartered in San Jose, California.

8tracks.com is an internet radio and social networking website revolving around the concept of streaming user-curated playlists consisting of at least 8 tracks. Users create free accounts and can browse the site and listen to other user-created mixes, as well as create their mixes.

Amikumu is a cross-platform app for smartphones (Android and iOS) which can be used to find people nearby who speak or learn the same languages as the user.

Athlinks is a free-of-charge social networking website aimed at competitive endurance athletes. It primarily presents race results for running, swimming, cycling, mountain biking, triathlon, and adventure racing.

Baidu, Inc. is a Chinese multinational technology company specializing in Internet-related services, products, and artificial intelligence (AI), headquartered in Beijing's Haidian District.

Beacons is a free, all-in-one platform with all the tools creators need to build a custom link in bio, grow a fanbase, and make money.

BlogHer is an American media company founded by Elisa Camahort Page, Jory des Jardins, and Lisa Stone in 2005. It is an online blogger community and holds a yearly conference for women bloggers. BlogHer is owned by SHE Media which is a division of Penske Media Corporation.

Campsite.bio is a link in bio tool for social media like Instagram, Facebook, Twitter, TikTok and more. Campsite. bio makes it easy to manage multiple profiles under a single account.

Cellufun, also known as Tylted, is a social gaming community available on mobile devices. Users create avatars to represent themselves. It blends chat and a large catalog of social games.

Clubhouse is a social audio app for iOS and Android where users can communicate in audio chat rooms that accommodate groups of thousands of people.

DeviantArt is an online art community that features artwork, videography and photography, launched on August 7, 2000 by Angelo Sotira, Scott Jarkoff, and Matthew Stephens among others.

Douban.com, launched on 6 March 2005, is a Chinese online database and social networking service that allows registered users to record information and create content related to film, books, music, recent events, and activities in Chinese cities.

Elpha is a professional network dedicated to helping women succeed at work. Members get access to daily conversations with experts, insider opportunities, advice, support and a lot of women having candid conversations and making friends.

FilmAffinity is a movie recommendations website created in 2002 in Madrid, Spain, by the film critic Pablo Kurt Verdú Schumann and the programmer Daniel Nicolás.

Flip is a free-to-use video discussion platform owned by Microsoft for use in classroom environments. The platform is available via a web browser, or through a mobile app on iOS and Android devices.

Funny or Die is a comedy video website and film/television production company owned by Henry R. Muñoz III that was founded by Will Ferrell, Adam McKay, Mark Kvamme, and Chris Henchy in 2007.

Goodreads is an American social cataloging website and a subsidiary of Amazon that allows individuals to search its database of books, annotations, quotes, and reviews.

Houzz is an American website, online community and software for architecture; interior design and decorating; landscape design and home improvement. It was founded in 2009 and is based in Palo Alto, California.

Influenster is a product discovery and reviews platform for consumers. Influenster uses social media analytics to measure its users influence on social media. Influenster launched in 2010. An iOS app for Influenster launched in 2014 while an Android app launched in 2015.

InterNations is an online networking platform, where expatriates across the world can network and meet one another in person during events and/or activities organized by, primarily the Ambassadors and Consuls.

Line, stylised as LINE, is a freeware app for instant communications on electronic devices such as smartphones, tablet computers and personal computers. Line users exchange: texts, images, video and audio and conduct free VoIP conversations and video conferences.

Likee is a short-video creation and sharing app, available for iOS and Android operating systems. It is owned by Singaporean tech firm BIGO Technology,whose parent company is JOYY Inc., a Chinese firm listed on NASDAQ.

Linktree is a freemium social media reference landing page developed by Alex Zaccaria, Anthony Zaccaria, and Nick Humphreys, headquartered in Melbourne Australia.

Linkin.bio is a mini web page built into a users' Instagram and TikTok profiles, making their content clickable and shoppable.

MeetMe is an application designed specifically for meeting new people. It is available on desktop, Apple, and Android devices. This program utilizes GPS technology so that members can meet people who live in their area.

Microsoft Teams is a proprietary business communication platform developed by Microsoft, as part of the Microsoft 365 family of products. Teams primarily competes with the similar service Slack, offering workspace chat and videoconferencing, file storage and application integration.

Mixi is an online Japanese social networking service. It was founded in 1999 and is owned by Mixi, Inc. As of September 2012, Mixi had about 14 million monthly active users, with about 8.6 million of those on smartphones.

MyAnimeList, often abbreviated as MAL, is an anime and manga social networking and social cataloging application website run by volunteers. The site provides its users with a list-like system to organize and score anime and manga.

Nextdoor Holdings, Inc. is an American company which operates a hyperlocal social networking service for neighborhoods. The company was founded in 2008 and is based in San Francisco, California. Nextdoor launched in the United States in October 2011.

Open Diary is an online diary community, an early example of social networking software. It was founded on October 20, 1998. Open Diary went offline on February 7, 2014, but was re-launched on January 26, 2018.

Pexels is a provider of stock photography and stock footage. It was founded in Germany in 2014 and maintains a library with over 3.2 million free stock photos and videos.

Polywork is a professional social network that lets users create a free personal webpage, share what're they're up to both personally and professionally and send collaboration requests to others.

Qzone is a social networking website based in China which was created by Tencent in 2005. It allows users to write blogs, keep diaries, send photos, listen to music, and watch videos.

ReverbNation.com is a website, launched in 2006, that focuses on the independent music industry. It aims to provide a central site for musicians, producers, and venues to collaborate and communicate. ReverbNation was bought for an undisclosed sum by music creation platform, BandLab, in November 2021.

Shorby helps retarget a user's audience by multiple clickable links, messengers and social networks to their Instagram Bio. Shorby Details. and Shorby Community.

Skype is a proprietary telecommunications application operated by Skype Technologies, a division of Microsoft, best known for VoIP-based videotelephony, videoconferencing and voice calls. It also has instant messaging, file transfer, debit-based calls to landline and mobile telephones, and other features.

SoundCloud, is a German music streaming service that enables its users to upload, promote, and share audio. Founded in 2007 by Alexander Ljung and Eric Wahlforss, SoundCloud is one of the largest music streaming services in the world and is available in 190 countries and territories.

Stack Overflow is a question-and-answer website for programmers. It is the flagship site of the Stack Exchange Network. It was created in 2008 by Jeff Atwood and Joel Spolsky. It features questions and answers on certain computer programming topics.

Substack is an American online platform that provides publishing, payment, analytics, and design infrastructure to support subscription newsletters. It allows writers to send digital newsletters directly to subscribers. Founded in 2017, Substack is headquartered in San Francisco.

Tencent QQ, also known as QQ, is an instant messaging software service and web portal developed by the Chinese technology company Tencent.

Tinder is an online dating and geosocial networking application. On Tinder, users "swipe right" to like or "swipe left" to dislike other users' profiles, which include their photos, a short bio, and some of their interests.

Truth Social (stylized as TRUTH Social) is an alt-tech social media platform created by Trump Media & Technology Group (TMTG), an American media and technology company founded in October 2021 by former US president Donald Trump.

Unsplash is a website dedicated to proprietary stock photography. Since 2021, it has been owned by Getty Images. The website claims over 330,000 contributing photographers and generates more than 13 billion photo impressions per month on their growing library of over 5 million photos.

VK is a Russian online social media and social networking service based in Saint Petersburg. VK is available in multiple languages but it is predominantly used by Russian speakers.

Viadeo is a Web 2.0 professional social network whose members include business owners, entrepreneurs and managers. In 2016, after a failed attempt to conquer international markets, the company was taken over by Le Figaro.

WT.Social, also known as WikiTribune Social, WT or Trust Café, is a microblogging and social networking service on which users contribute to "subwikis". It was founded in October 2019 by Wikipedia cofounder Jimmy Wales as an alternative to Facebook and Twitter.

WeChat or Weixin in Chinese is a Chinese instant messaging, social media, and mobile payment app developed by Tencent. First released in 2011, it became the world's largest standalone mobile app in 2018 with over 1 billion monthly active users.

Wikipedia is a free-content online encyclopedia written and maintained by a community of volunteers, collectively known as Wikipedians, through open collaboration and using a wiki-based editing system called MediaWiki. Wikipedia is the largest and most-read reference work in history.

YY is a major Chinese video-based social network, a subsidiary of JOYY. t has over 300 million users. It features a virtual currency which users earn through activities such as karaoke or creating tutorial videos and which is later converted to real cash.

Yubo is a French social networking app developed by TWELVE APP in 2015. It is designed to "meet new people" and "create a sense of community". The app had 60 million users as of 2022.

ASmallWorld is a media company and a social network based in Zurich, Switzerland. The company markets itself as "the world's leading travel & lifestyle community" and offers its services to travellers around the world.

Anobii is a social networking site aimed at readers. Its website was launched in 2006 by Greg Sung. It was acquired by the publisher Mondadori in 2014 from a venture backed by HMV Group, HarperCollins, Penguin, and Random House.

BAND is a mobile community application that facilitates group communication. Created by Naver Corporation, the service is available on iOS, Android, and desktop. Users can create separate spaces for communicating with members of different groups, depending on the purpose of those groups

Baidu Tieba is a Chinese online forum hosted by the Chinese web services company Baidu. Baidu Tieba was established on December 3, 2003 as an online community that heavily integrates Baidu's search engine.

Behance is a social media platform owned by Adobe whose main focus is to showcase and discover creative work. Behance was founded by Matias Corea and Scott Belsky in November 2005. It was acquired by Adobe in December 2012.

CafeMom is a website targeted to mothers and mothers-to-be. It is owned by Wild Sky Media, which also owns Mom.com, MamásLatinas, and LittleThings.

Care2 is a social networking website that was founded by Randy Paynter in 1998. The goal of the site is to connect activists from around the world with other individuals, organizations and responsible businesses making an impact.

classmates.com is a social networking service. It was founded on November 17, 1995 by Randy Conrads as Classmates Online. It originally sought to help users find class members and colleagues from kindergarten, primary school, high school, college, workplaces, and the U.S. military.

CouchSurfing is a hospitality exchange service by which users can request free short-term homestays or interact with other people who are interested in travel. It is accessible via a website and mobile app.

Diaspora (stylized as diaspora*) is a nonprofit, user-owned, distributed social network. It consists of a group of independently owned nodes (called pods) which interoperate to form the network.

With more than 550 million monthly active users Douyin is leading the short-video app universe in China by far.

Facebook is an online social media and social networking service owned by American technology giant Meta Platforms. Created in 2004 by Mark Zuckerberg with fellow Harvard College students and roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes, its name derives from the face book directories often given to American university students.

Fiverr is an Israeli multinational online marketplace for freelance services. Fiverr's platform connects freelancers to people or businesses looking to hire. Listings on Fiverr are diverse and range from "get a well-designed business card" to "help with HTML, JavaScript, CSS, and jQuery".

Foursquare City Guide, commonly known as Foursquare, is a local search-and-discovery mobile app developed by Foursquare Labs Inc. The app provides personalized recommendations of places to go near a user's current location based on users' previous browsing history and check-in history.

Giphy, styled as GIPHY, is an American online database and search engine that allows users to search for and share animated GIF files.

Goodwall is an app that aims to provide young people with opportunities to develop their skills and gain access to educational and work-related opportunities.

Imgur is an American online image sharing and image hosting service with a focus on social gossip that was founded by Alan Schaaf in 2009. The service has hosted viral images and memes, particularly those posted on Reddit.

Instagram, LLC is a photo and video sharing social networking service owned by American company Meta Platforms. The app allows users to upload media that can be edited with filters, be organized by hashtags, and be associated with a location via geographical tagging.

italki is an online language learning platform which connects language learners and teachers through video chat. The site allows students to find online teachers for 1-on-1 tutoring, and teachers to earn money as freelance tutors.

LINE PLAY is a game developed by LINE, the communications app. It offers users the option to create their own avatar and live within the world of LINE where they are able to communicate with millions of people that use this app.

Link in Profile lets users add links to their Instagram images and send their followers where they want them to go.

LiveJournal, stylised as LiVEJOURNAL, is a Russian-owned social networking service where users can keep a blog, journal, or diary.

MeWe is a global social media and social networking service. As a company based in Los Angeles, California it is also known as Sgrouples, Inc., doing business as MeWe. The site has been described as a Facebook alternative due to its focus on data privacy.

Meetup is a social media platform for hosting and organizing in-person and virtual activities, gatherings, and events for people and communities of similar interests, hobbies, and professions. It was founded in 2002 by Scott Heiferman and four others.

Milkshake is a free app that allows users to build a simple, free website from their phone. The app is free and publishing a website is free.

MocoSpace is a mobile social network. The features of the site are similar to other social networking sites. Features include mobile games, chat, instant messaging, eCards, and photos. Mocospace was created during the popularity of and based on Myspace.com.

MyHeritage is an online genealogy platform with web, mobile, and software products and services. Users of the platform can obtain their family trees, upload and browse through photos, and search through over 19.4 billion historical records, among other features.

Odnoklassniki, abbreviated as OK or OK.ru, is a social network service used mainly in Russia and former Soviet Republics. The site was launched on March 4, 2006 by Albert Popkov and is currently owned by VK.

Patreon is a membership platform operated by Patreon, Inc., that provides business tools for content creators to run a subscription service. It helps creators and artists earn a monthly income by providing rewards and perks to their subscribers.

Picsart is an all-in-one creative platform of photo, video editing, and design tools. With easy-to-use editing tools powered by AI, one of the world's largest open-source content collections, customizable templates, and a simple user interface, users can create engaging images and videos in minutes.

Tencent QQ, also known as QQ, is an instant messaging software service and web portal developed by the Chinese technology company Tencent. QQ offers services that provide online social games, music, shopping, microblogging, movies, and group and voice chat software.

Ravelry is a free social networking service and website that beta-launched in May 2007. It functions as an organizational tool for a variety of fiber arts, including knitting, crocheting, spinning and weaving.

Rumble is an online video platform, web hosting and cloud services business headquartered in Toronto, Ontario, with its U.S. headquarters in Longboat Key, Florida. The cloud services business hosts Truth Social, and the video platform is popular among American right and far-right users.

Sina Weibo is a Chinese microblogging website. Launched by Sina Corporation on 14 August 2009, it is one of the biggest social media platforms in China, with over 582 million monthly active users as of Q1 2022.

Slack is a cloud-based freemium cross-platform instant messaging service created by Slack Technologies and currently owned by Salesforce. While initially developed for professional and organizational communications, it has also been adopted as a community platform.

Spotifyis a Swedish audio streaming and media services provider founded on 23 April 2006 by Daniel Ek and Martin Lorentzon. It is one of the largest music streaming service providers, with over 551 million monthly active users, including 220 million paying subscribers, as of June 2023.

Stage 32 is a U.S.-based social network and educational site for creative professionals who work in film, television and theater. As of August 2021, the global web site had more than 800,000 members.

Tagged is a social discovery website based in San Francisco, California, founded in 2004. It allows members to browse the profiles of any other members, and share tags and virtual gifts.

The Dots is professional networking for the new world of work allowing users to get advice, meet collaborators, find jobs and upskill at events.

TRIBE is a marketplace connecting brands & agencies with social media influencers. TRIBE was founded in 2014 by Australian TV and radio host, Jules Lund.

Tumblr is a microblogging and social networking website founded by David Karp in 2007 and currently owned by American company Automattic. The service allows users to post multimedia and other content to a short-form blog. Users can follow other users' blogs. Bloggers can also make their blogs private.

Untappd is a geosocial networking service and mobile phone application founded by Greg Avola and Tim Mather that allows its users to check in as they drink beers, and share these check-ins and their locations with their friends. It incorporates aspects of gamification.

Valence is an internet company that connects, showcases, and empowers the global black professional community.

Viber, or Rakuten Viber, is a cross-platform voice over IP and instant messaging software application owned by Japanese multinational company Rakuten, provided as freeware for the Google Android, iOS, Microsoft Windows, Apple macOS and Linux platforms.

Wattpad is a free online platform that allows users to read and publish original stories. Wattpad has stories available in more than 50 languages, and nearly 300,000 writers from 35 countries take part every year in the largest writing competition, The Watty Awards.

Sina Weibo is a Chinese microblogging website. Launched by Sina Corporation on 14 August 2009, it is one of the biggest social media platforms in China, with over 582 million monthly active users as of Q1 2022.

X is an online social media and social networking service operated by the American company X Corp., the successor of Twitter, Inc.

Yelp Inc. is an American company that develops the Yelp.com website and the Yelp mobile app, which publishes crowd-sourced reviews about businesses. It also operates Yelp Guest Manager, a table reservation service. It is headquartered in San Francisco, California.

Zhihu is a forum website where questions are created, answered, edited, and organized by its users. Originally based in Chengdu and with creators from Sichuan, China, the website launched on January 26, 2011.