Similar Platforms and their About

Quora

Why Quora exists

Quora’s mission is to share and grow the world’s knowledge. Not all knowledge can be written down, but much of that which can be, still isn't. It remains in people’s heads or only accessible if you know the right people. We want to connect the people who have knowledge to the people who need it, to bring together people with different perspectives so they can understand each other better, and to empower everyone to share their knowledge for the benefit of the rest of the world.

Gather around a question

The heart of Quora is questions — questions that affect the world, questions that explain recent world events, questions that guide important life decisions, and questions that provide insights into why other people think differently. Quora is a place where you can ask questions that matter to you and get answers from people who have been there and done that. Quora is where scientists, artists, entrepreneurs, mechanics, and homemakers take refuge from misinformation and incendiary arguments to share what they know.

Tell a story

Ever since the first humans gathered around a fire and turned their gaze to the stars, humanity has shared knowledge through stories. Spaces are digital campfires for collective meaning making which expand knowledge sharing from interrogative to narrative. In Spaces, creators build audiences of millions for their unique insights or audiences of thousands for niche knowledge that can't be found anywhere else.

Understand the world and people in it

Great writers help you understand why the world works the way it does, why people behave the way they do, and what we can all do to make the world better. Millions of people search the web for answers and millions of people write answers on Quora, every week.

Quora’s answers come from people who really understand the issues and have first-hand knowledge. Quora is the place to read Barack Obama on the Iran deal, prisoners on life in prison, scientists on global warming, police officers on how to deter burglars, and TV producers on how their shows are made. Quora is the place to read inspiring people such as Gloria Steinem, Stephen Fry, Hillary Clinton, Glenn Beck, Sheryl Sandberg, Vinod Khosla, and Gillian Anderson directly answering the questions people most wanted them to answer. Quora is where you can read important insights that have never been shared anywhere else, from people you could never reach any other way.

Reddit

Dive into anything

Reddit is home to thousands of communities, endless conversation, and authentic human connection. Whether you're into breaking news, sports, TV fan theories, or a never-ending stream of the internet's cutest animals, there's a community on Reddit for you.

How does Reddit work?

Every day, millions of people around the world post, vote, and comment in communities organized around their interests.

Empowering communities

Our mission is to empower communities and make their knowledge accessible to all. Our values capture the idealism within Reddit that both we and our users love.

Remember the human

We believe Reddit is the most human place on the internet. It’s powered by the creativity, passion, and generosity of the people who spend time here and make it their own. We respect redditors and work hard to give them a place where self-expression can thrive and communities can achieve amazing things together.

We also remember that there are real people on the other side of the screen who lead full and complex lives. And often, when someone is struggling or in need of support, they come to Reddit to find help and understanding they can’t find elsewhere. We take this role seriously and aim to make Reddit a place where people can continue to find communities that accept and appreciate them for who they are.

Start with community

Reddit succeeds when our communities succeed. When we build anything on Reddit, we start with community—evaluating ideas by how well they empower communities.

Reddit has evolved by decentralizing control and empowering communities to create the spaces that work for them—spaces that have become some of the most selfless, ingenuitive, funny, and enriching communities on the internet. We trust communities to know what works best for them and give them the autonomy to make decisions for themselves.

Keep Reddit real

Reddit is where people can be genuine. The humans of Reddit are a vast and diverse group of people, who come to the platform as their full, imperfect, human selves. This results in the type of candid, honest discussions you cannot have anywhere else and the vast breadth of communities that are found on Reddit. We present an authentic, unmanicured version of the world, and as long as being your unfiltered self is not hurting anyone or violating the Content Policy, then there’s a place for you on Reddit.

We do not understand or agree with everything on Reddit (we are a vast and diverse group of people, too), and we do not try to conform Reddit to what we or other people think it should be. We do, though, try to create a space that is as real, complex, and wonderful as the world itself.

Privacy is a right

Reddit stands for privacy. Redditors have complete control of their identity and are empowered to share as much or as little personal information as they want. Redditors do not reveal information about each other without permission, and Reddit does not use nonpublic information about redditors without their consent.

We also let people know and control how we use their data. We run ads, and use what people agree to share with us to show them ads we think they might be interested in (and yes, to make money) but we don’t and won’t ever sell redditors’ personal information.

Believe in the good

Reddit reflects humanity. When people on Reddit come together around something they really care about, they can and will do extraordinary things. In our interactions, we try to give each other the benefit of the doubt and remember that most people—even when upset, frustrated, or misguided—are decent and reasonable, and will do the right thing given the right circumstances.

Believing in the good does not mean disbelieving the bad. But we believe most people come to Reddit because they genuinely want to contribute and feel a sense of belonging. If that is not happening, something is wrong and we will fix it. People are good, and if we empower them, the good will always outshine the bad.

Stack Overflow

Empowering the world to develop technology through collective knowledge.

Our products and tools enable people to ask, share and learn at work or at home.

Github

The complete developer platform to build, scale, and deliver secure software.

X

Join us to build the future of the internet

We're building the world's most trusted public town square—and we pride ourselves on our commitment to protecting free speech within the boundaries of the law.

Beyond that, we aim to increase unregretted user minutes on our platform, and make it the best place on the internet for creators to share content and make money.

Join us to have real impact on what is bound to evolve into the ultimate everything app.

Discord

CREATE SPACE FOR EVERYONE TO FIND BELONGING

It’s where your world hangs out. Discord is a voice, video and text communication service used by over a hundred million people to hang out and talk with their friends and communities.

Our story

Discord is about giving people the power to create space to find belonging in their lives. We want to make it easier for you to talk regularly with the people you care about. We want you to build genuine relationships with your friends and communities close to home or around the world. Original, reliable, playful, and relatable. These are the values that connect our users and our employees at Discord.

Prologue

Discord was started to solve a big problem: how to communicate with friends around the world while playing games online. Since childhood, founders Jason Citron and Stan Vishnevskiy both shared a love of video games, cherishing the friendships and connections that formed while playing them. At the time, all the tools built for this job were slow, unreliable, and complex. Jason and Stan knew they could make a better service that encouraged talking, helped form memories, and recreated the feeling of togetherness all found through gaming.

Chapter One

So, in 2015, Stan and Jason started to bring Discord to life. People from all over the world loved it. Discord made it easy to genuinely communicate with friends, going beyond casual talking. Friends were staying in touch with their various communities. Discord was making it easy to participate in conversation, hopping around text, voice and video to talk. The technology was complex but the goal was simple: make Discord an inviting and comfortable home to jump into with your communities and friends. Within a few years, Discord began to take off, and devoted people who loved our product sprung up around the world.

Where are we now?

Discord is used by everyone from local hiking clubs, to art communities, to study groups. Discord has millions of people creating places for their friends and communities, talking for upwards of 4 hours per day on the platform. Discord is now where the world talks, hangs out, and builds relationships. Discord lets anyone create a space to find belonging—just like it did for Jason and Stan.

Wikipedia

"Imagine a world in which every single person on the planet is given free access to the sum of all human knowledge. That's what we're doing." —Jimmy Wales

Wikipedia is a free online encyclopedia that anyone can edit, and millions already have.

Wikipedia's purpose is to benefit readers by presenting information on all branches of knowledge. Hosted by the Wikimedia Foundation, Wikipedia consists of freely editable content, with articles that usually contain numerous links guiding readers to more information.

Written collaboratively by volunteers known as Wikipedians, Wikipedia articles can be edited by anyone with Internet access, except in limited cases in which editing is restricted to prevent disruption or vandalism. Since its creation on January 15, 2001, it has grown into the world's largest reference website, attracting over a billion visitors each month. Wikipedia currently has more than sixty-four million articles in more than 300 languages, including 6,950,812 articles in English, with 126,324 active contributors in the past month.

Wikipedia's fundamental principles are summarized in its five pillars. While the Wikipedia community has developed many policies and guidelines, new editors do not need to be familiar with them before they start contributing.

Anyone can edit Wikipedia's text, data, references, and images. The quality of content is more important than the expertise of who contributes it. Wikipedia's content must conform with its policies, including being verifiable by published reliable sources. Contributions based on personal opinions, beliefs, or personal experiences, unreviewed research, libellous material, and copyright violations are not allowed, and will not remain. Wikipedia's software makes it easy to reverse errors, and experienced editors watch and patrol bad edits.

Wikipedia differs from printed references in important ways. Anyone can instantly improve it, add quality information, remove misinformation, and fix errors and vandalism. Since Wikipedia is continually updated, encyclopedic articles on major news events appear within minutes.

For over 24 years, editors have volunteered their time and talents to create history's most comprehensive encyclopedia while providing references and other resources to researchers worldwide (see Researching with Wikipedia). In summary, Wikipedia has tested the wisdom of the crowd since 2001 and has found that it succeeds.

United Nations

One place where the world's nations can gather together, discuss common problems and find shared solutions.

The United Nations is an international organization founded in 1945. Currently made up of 193 Member States, the UN and its work are guided by the purposes and principles contained in its founding Charter.

The UN has evolved over the years to keep pace with a rapidly changing world.

But one thing has stayed the same: it remains the one place on Earth where all the world’s nations can gather together, discuss common problems, and find shared solutions that benefit all of humanity.

知乎

有问题就会有答案

微博

Weibo is a leading social media for people to create, share and discover content online. It combines the means of public self-expression in real time with a powerful platform for social interaction, content aggregation and content distribution. Any user can create and post a feed and attach multi-media and long-form content. User relationships on Weibo may be asymmetric; any user can follow any other user and add comments to a feed while reposting. This simple, asymmetric and distributed nature of Weibo allows an original feed to become a live viral conversation stream.

Weibo enables its advertising and marketing customers to promote their brands, products and services to users. Weibo offers a wide range of advertising and marketing solutions to companies of all sizes. The Company generates a substantial majority of its revenues from the sale of advertising and marketing services, including the sale of social display advertisement and promoted marketing offerings. Weibo has developed and is continuously refining its social interest graph recommendation engine, which enables its customers to perform people marketing and target audiences based on user demographics, social relationships, interests and behaviors, to achieve greater relevance, engagement and marketing effectiveness.