| Reddit |
A social news aggregation, web content rating, and discussion website. |
Social Media |
https://www.reddit.com |
2005.0 |
430 |
2.5K |
Subreddits |
| Wikipedia |
A collaboratively edited online encyclopedia. |
Reference |
https://www.wikipedia.org |
2001.0 |
500 |
1.5K |
Editing, Talk pages |
| Stack Overflow |
A question and answer site for professional and enthusiast programmers. |
Q&A |
https://stackoverflow.com |
2008.0 |
50 |
3K |
Tags, Voting |
| GitHub |
A code hosting platform for version control and collaboration. |
Development |
https://github.com |
2008.0 |
40 |
50K |
Repositories, Issues |
| Trello |
A project management tool that uses boards and lists. |
Productivity |
https://trello.com |
2011.0 |
50 |
12K |
Boards, Cards |
| OpenStreetMap |
A collaborative mapping project to create a free editable map of the world. |
Geography |
https://www.openstreetmap.org |
2004.0 |
5 |
3.8K |
Editing, Map features |
| Mozilla Firefox |
A community-powered web browser with a focus on privacy. |
Software |
https://www.mozilla.org/firefox/ |
2002.0 |
200 |
34K |
Add-ons, Community forums |
| Discord |
A VoIP, instant messaging and digital distribution platform for communities. |
Communication |
https://discord.com |
2015.0 |
150 |
18K |
Servers, Channels |
| WordPress |
A content management system that allows users to create and manage websites. |
Web Development |
https://wordpress.org |
2003.0 |
60 |
50K |
Themes, Plugins |
| Khan Academy |
An educational platform with instructional videos and practice exercises. |
Education |
https://www.khanacademy.org |
2008.0 |
10 |
9K |
Courses, Discussions |
| GitLab |
A web-based DevOps lifecycle tool that provides a Git repository manager. |
Development |
https://gitlab.com |
2011.0 |
30 |
30K |
Repositories, CI/CD |
| Fandom |
A wiki-based platform for fans to create and share content about their favorite media. |
Entertainment |
https://www.fandom.com |
2004.0 |
50 |
20K |
Wikis, Fan pages |
| Quora |
A Q&A platform where questions are asked, answered, and edited by Internet users. |
Q&A |
https://www.quora.com |
2009.0 |
30 |
10K |
Voting, Topics |
| Meetup |
A service used to organize online groups that host in-person events for people with similar interests. |
Social |
https://www.meetup.com |
2002.0 |
35 |
2K |
Groups, Events |
| Goodreads |
A social cataloging website that allows users to search its database of books, annotations, and reviews. |
Reading |
https://www.goodreads.com |
2007.0 |
30 |
25K |
Reading lists, Reviews |
| TripAdvisor |
A travel platform that provides reviews of travel-related content. |
Travel |
https://www.tripadvisor.com |
2000.0 |
490 |
40K |
Reviews, Forums |
| SoundCloud |
An online audio distribution platform and music sharing website. |
Music |
https://soundcloud.com |
2007.0 |
76 |
45K |
Tracks, Playlists |
| Wikihow |
A collaborative platform for creating how-to guides for everything. |
Knowledge Base |
https://www.wikihow.com |
2005.0 |
70 |
20K |
Editing, Community boards |
| Blender |
An open-source 3D creation suite with a large community of artists and developers. |
Creative Software |
https://www.blender.org |
2002.0 |
10 |
16K |
Add-ons, Community projects |
| Dribbble |
A community where designers share their work, process, and projects. |
Design |
https://dribbble.com |
2009.0 |
8 |
30K |
Shots, Projects |
| Behance |
A platform to showcase and discover creative work. |
Creative Portfolio |
https://www.behance.net |
2006.0 |
12 |
15K |
Projects, Collections |
| CodePen |
An online code editor and open-source learning environment for front-end web designers and developers. |
Development |
https://codepen.io |
2012.0 |
6 |
3K |
Pens, Collections |
| Yelp |
A platform that connects people with local businesses through user reviews and ratings. |
Business |
https://www.yelp.com |
2004.0 |
37 |
40K |
Reviews, Check-ins |
| Freecodecamp |
A nonprofit community that helps people learn to code for free. |
Education |
https://www.freecodecamp.org |
2014.0 |
8 |
8K |
Forums, Challenges |
| Nextdoor |
A social networking service for neighborhoods to connect and share. |
Social Networking |
https://nextdoor.com |
2010.0 |
10 |
3K |
Neighborhood groups |
| Eventbrite |
An event management and ticketing website. |
Event Management |
https://www.eventbrite.com |
2006.0 |
10 |
10K |
Event listings, Community events |
| Internationalization |
A platform that allows localization of web content by community input. |
Localization |
https://www.transifex.com |
2011.0 |
5 |
2.5K |
Projects, Collaborators |
| openSUSE |
A community-driven, Linux-based operating system. |
Operating System |
https://www.opensuse.org |
2005.0 |
10 |
15K |
Packages, Community contributions |
| PeerTube |
A decentralized video hosting platform that makes use of P2P technology. |
Video Sharing |
https://joinpeertube.org |
2018.0 |
0.5 |
1.5K |
Instances, Channels |
| Libera Chat |
A community-run Internet Relay Chat network. |
Communication |
https://libera.chat |
2021.0 |
1 |
1K |
Channels, Users |
| Planetarium |
An open-source web-based project to help organize and promote community events. |
Event Coordination |
https://www.planetarium.com |
2015.0 |
1 |
500 |
Event listings, Add-ons |
| F-Droid |
An installable catalog of FOSS (Free and Open Source Software) applications for the Android platform. |
Mobile Apps |
https://f-droid.org |
2010.0 |
3 |
3K |
Repositories, Contributions |
| Nextcloud |
A suite of client-server software for creating and using file hosting services. |
File Sharing |
https://nextcloud.com |
2016.0 |
5 |
2K |
Apps, Contributions |
| Open Culture |
A site that provides free educational and cultural media. |
Education |
https://www.openculture.com |
2006.0 |
2 |
1K |
Courses, Links |
| Archive.org |
A non-profit digital library offering free universal access to books, movies & music. |
Digital Library |
https://archive.org |
1996.0 |
10 |
10K |
Collections, Community uploads |
| DigitalOcean Community |
A community platform where developers can share knowledge and solutions. |
Development |
https://www.digitalocean.com/community |
2011.0 |
4 |
4K |
Tutorials, Q&A |
| Codewars |
A coding platform that offers challenges to sharpen coding skills through user-generated tasks. |
Programming |
https://www.codewars.com |
2015.0 |
1.5 |
5K |
Kata, Community solutions |
| Vox Media |
A media company that produces and distributes content driven by community interests. |
Media |
https://www.vox.com |
2014.0 |
4 |
1K |
Comments, Discussions |
| Mozilla Developer Network |
A resource for developers to learn about web technologies. |
Web Development |
https://developer.mozilla.org |
2005.0 |
8 |
30K |
Documentation, Community inputs |
| OpenAI Community |
A platform focused on AI with forums for knowledge sharing and improvements. |
AI |
https://community.openai.com |
2020.0 |
0.5 |
500 |
Blogs, Feedback |
| GitBucket |
An open-source Git platform powered by Scala which can be easily installed on any server. |
Development |
https://gitbucket.github.io |
2013.0 |
0.1 |
100 |
Projects, Issues |
| Photopea |
A free online Photoshop alternative that allows user edits and exporting. |
Graphic Design |
https://www.photopea.com |
2013.0 |
3 |
1K |
Projects, Edits |
| GIMP |
A free and open-source image editor that allows for extensive customization. |
Graphic Design |
https://www.gimp.org |
1996.0 |
10 |
15K |
Plugins, Scripts |
| OpenAI Codex |
A model by OpenAI that translates natural language into code, with community applications. |
AI Development |
https://openai.com/research/codex |
2021.0 |
1 |
500 |
APIs, Plugins |
| LocalBitcoins |
An online trading platform that connects buyers and sellers of Bitcoin, facilitating peer-to-peer transactions. |
Finance |
https://localbitcoins.com |
2012.0 |
2 |
1K |
Trading, Community profiles |
| AngelList |
A platform for startups to connect with investors and talent. |
Startups |
https://angel.co |
2010.0 |
2 |
10K |
Companies, Job listings |
| Apache Software Foundation |
Supports numerous open-source software projects on a community-driven basis. |
Software Development |
https://apache.org |
1999.0 |
5 |
20K |
Projects, Contributions |
| Drupal |
An open-source content management framework that supports various types of websites. |
Web Development |
2001 |
7.0 |
10K |
Modules, Themes |
NaN |
| Open Collective |
A platform that offers transparency for community financial contributions to open source projects. |
Funding |
https://opencollective.com |
2016.0 |
3 |
1.5K |
Collectives, Contributions |
| Indiegogo |
A crowdfunding platform that allows people to raise money for various projects. |
Funding |
https://www.indiegogo.com |
2008.0 |
10 |
15K |
Campaigns, Backers |
| Signal |
A private messaging app built by a small community focused on privacy. |
Communication |
https://signal.org |
2010.0 |
40 |
20K |
Groups, Community sharing |
| Mozilla Add-ons |
A place for users to find and share extensions for the Firefox browser. |
Software |
https://addons.mozilla.org |
2004.0 |
20 |
25K |
Add-ons, User reviews |
| Freenode |
A chat platform that helps open-source communities connect over IRC. |
Communication |
https://freenode.net |
1998.0 |
2 |
500 |
Channels, Users |
| BookCrossing |
A social network for book lovers to share books and track their journeys. |
Books |
https://www.bookcrossing.com |
2001.0 |
1 |
1K |
Tracking, Exchange |
| Gitcoin |
A platform to fund and incentivize open-source development through bounties and hackathons. |
Blockchain |
https://gitcoin.co |
2017.0 |
3 |
2K |
Bounties, Grants |
| Flicker |
A community-driven photo sharing and hosting service. |
Photography |
https://www.flickr.com |
2004.0 |
5 |
2.5K |
Albums, Groups |
| Game Jolt |
A community for indie game developers and players to share and discover games. |
Gaming |
https://gamejolt.com |
2012.0 |
3 |
1K |
Games, Community events |
| Ravelry |
A community website, social network, and blog site for knitters and crocheters. |
Crafting |
https://www.ravelry.com |
2007.0 |
2 |
1.5K |
Groups, Projects |
| OpenStudy |
A social learning network for students to collaborate on problem-solving. |
Education |
https://openstudy.com |
2012.0 |
1 |
500 |
Study groups, Questions |
| Airbnb |
A marketplace for lodging and tourism that connects hosts and guests. |
Travel |
https://www.airbnb.com |
2008.0 |
300 |
25K |
Reviews, Listings |
| eBay |
A multinational e-commerce corporation that facilitates consumer-to-consumer and business-to-consumer sales. |
E-commerce |
https://www.ebay.com |
1995.0 |
182 |
35K |
Listings, Auctions |
| We Need Diverse Books |
A nonprofit organization advocating for diversity in children's literature. |
Literature |
https://weneeddiversebooks.org |
2014.0 |
1 |
1K |
Programs, Advocacy |
| Zoho |
A suite of online productivity tools and software that enables seamless collaboration. |
Productivity |
https://www.zoho.com |
1996.0 |
10 |
8K |
Applications, Forums |
| MeetMe |
A social discovery platform for meeting new people. |
Social Networking |
2005 |
10.0 |
10K |
Groups, Profiles |
NaN |
| Vimeo |
A video-sharing platform focused on high-quality content and creators' needs. |
Video Sharing |
2004 |
200.0 |
10K |
Channels, Collections |
NaN |
| Wordnik |
A social network for language lovers to share and find definitions and examples. |
Language |
https://www.wordnik.com |
2008.0 |
1 |
500 |
Definitions, Lists |
| Origami |
A platform for sharing, creating, and discovering origami content. |
Crafting |
https://www.origami.com |
2015.0 |
0.1 |
200 |
Models, Community interactions |
| Power to Fly |
A platform that connects women in tech with companies looking to hire diverse candidates. |
Networking |
https://powertofly.com |
2015.0 |
1 |
300 |
Events, Matchmaking |
| Open Data Soft |
A platform that allows municipalities and organizations to share data with their communities. |
Data Sharing |
https://www.opendatasoft.com |
2013.0 |
0.5 |
100 |
Datasets, API |
| NPM |
A package manager for JavaScript that provides a platform for open-source sharing. |
Development |
https://www.npmjs.com |
2010.0 |
11 |
20K |
Packages, Collaborations |
| Couchsurfing |
A platform for travelers to stay with locals for free. |
Travel |
https://www.couchsurfing.com |
2004.0 |
14 |
8K |
Hosts, Events |
| Substack |
A platform for writers to publish and monetize subscription-based newsletters. |
Publishing |
https://substack.com |
2017.0 |
2 |
500 |
Newsletters, Communities |
| Public Lab |
A community where people can share open-source and DIY science techniques and tools. |
Science |
https://publiclab.org |
2010.0 |
2 |
500 |
Projects, Kits |
| PubMed Commons |
A platform that enables authors to share opinions and discussions regarding biomedical literature. |
Medical |
https://www.ncbi.nlm.nih.gov/pubmedcommons/ |
2013.0 |
1 |
300 |
Comments, Discussions |
| GoodList |
A community-driven platform that helps people find ethical, sustainable services and products. |
Consumer Services |
https://goodlist.org |
2019.0 |
1 |
200 |
Lists, Reviews |
| Helmholtz |
A researcher community sharing best practices and tools in the field of science and research. |
Research |
https://www.helmholtz.de |
2018.0 |
0.3 |
20 |
Projects, Publications |
| Data.world |
A cloud-based platform for data collaboration and sharing. |
Data Sharing |
https://data.world |
2016.0 |
1 |
2K |
Datasets, Projects |
| LGBTQ+ Tech |
A community that supports and advocates for LGBTQ+ individuals in technology. |
Networking |
https://lgbtqtech.com |
2020.0 |
0.1 |
100 |
Events, Resources |
| OpenTable |
An online restaurant-reservation service connecting diners with restaurants. |
Dining |
https://www.opentable.com |
1998.0 |
30 |
5K |
Reviews, Reservations |
| Mintbean |
A community-driven hackathon platform, focusing on project challenges. |
Development |
2020 |
0.5 |
300 |
Challenges, Teams |
NaN |
| TeachingResources |
A community for educators to share lesson plans, worksheets, and teaching materials. |
Education |
https://www.teachingresources.com |
2012.0 |
0.5 |
100 |
Resources, Discussions |