18 Online Communities for Open Source Developers
Updated 5/23/2026
Freqtrade
on github and discord and slack
Freqtrade is a free and open source crypto trading bot written in Python. It is designed to support all major exchanges and be controlled via Telegram or webUI. It contains backtesting, plotting and money management tools as well as strategy optimization by machine learning. For any questions not covered by the documentation or for further information about the bot, or to simply engage with like-minded individuals, we encourage you to join the Freqtrade discord server.11K members
ForumChat65 views / month
Angular
on discord
Deliver web apps with confidence! The Angular Discord server is a free and safe way for you to connect with the Angular community, ask questions, and learn from others. There are channels that range from questions and discussions about Angular, community topics and events, libraries and technologies, meetups, and more. You can connect with library authors and contributors, people in your local area, and people that speak your language.44K members
ChatPairingEvents12 views / month
Wasp
on discord and github
Wasp: Revolutionize Full-Stack Web Development with React & Node.js! Wasp is a cutting-edge open-source framework designed to streamline the development of full-stack web apps using React and Node.js, enabling rapid deployment with just a single CLI command.2K members
ForumChatNewsletter7 views / month
Bitcoin Design
on discord and github
A free, open-source community resource for designers, developers, and others working on non-custodial Bitcoin products. The Bitcoin Design Community Discord is an open space to discuss and explore everything bitcoin and design. Open standards are part of our foundation, so all of our work can also be found on Github.871 members
ForumChatEventsNewsletter13 views / month
Deno
on github and discord
A constructive and inclusive social network for software developers. With you every step of your journey. Deno is a runtime for JavaScript, TypeScript, and WebAssembly that is based on the V8 JavaScript engine and the Rust programming language. Deno was co-created by Ryan Dahl, who also created Node.js.16K members
ForumChatNewsletter7 views / month
Linux.Chat
on discord
The Linux.Chat community is a multi-platform community for general Linux support. We provide help and support for any Linux® distribution and aim to answer any questions you might have about Linux. Discussion about the various aspects of Linux and Free/Open Source software is also encouraged19K members
ForumChat10 views / month
r/OSINT
on reddit
Welcome to the Open Source Intelligence (OSINT) Community on Reddit. This is a platform for members and visitors to explore and learn about OSINT, including various tactics and tools. We encourage discussions on all aspects of OSINT, but we must emphasize an important rule: do not use this community to "investigate or target" individuals.239K members
Forum13 views / month
Appwrite
on discord
Appwrite is a backend platform for developing Web, Mobile, and Flutter applications. Built with the open source community and optimized for developer experience in the coding languages you love. Appwrite's open-source platform lets you add Auth, DBs, Functions and Storage to your product and build any application at any scale, own your data, and use your preferred coding languages and tools.25K members
ForumChatPaid6 views / month
OpenPOWER Foundation
on slack
By open sourcing and developing on the POWER ISA - one of the most sophisticated processor architectures available - the OpenPOWER Foundation is democratizing access and extending the reach of the RISC-based architecture. With more than 1050 members collaborating regularly, the entire semiconductor industry - from global organizations with deep expertise to individual creators with a new lens - can innovate with choice and build and develop across the full Hardware and Software stack.1K members
ChatEventsPaid4 views / month
FOSS Post
on telegram
FOSS Post is a high-quality online magazine about Linux and open source software. This channel posts daily news from all over the web too.2K members
ChatNewsletterPaid2 views / month
Clickvote
on github
Clickvote is an open-source tool that effortlessly adds upvotes, likes, and reviews to any online content, enhancing user interaction and engagement in various contexts. Open-source is in the heart of Clickvote. We keep all the source code and work publicly available. Join our community driven project with over 3,000+ developers from around the world who contribute code and help building the modern notification infrastructure.ForumNewsletterPaid5 views / month
Apache Software Foundation
on slack
The Apache Software Foundation (ASF) is home to nearly 150 top level projects ranging from open source enterprise automation software to a whole ecosystem of distributed computing projects related to Apache Hadoop. ASF’s open source software is used ubiquitously around the world with more than 8,400 committers contributing to more than 320 active projects.8K members
Chat8 views / month
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Blue Dwarf
Blue Dwarf is for people who are looking for an online community that believes in "old Internet" values like free speech, privacy, and anonymity. While users are encouraged to post on any topic that interests them in a verbal-abuse free environment, we spend quite a bit of time discussing self hosting, Linux, politics, and spirituality.892 members
Forum7 views / month
Harness Community
on slack
Harness is a self-service CI/CD platform that allows engineers and DevOps to build, test, deploy, and verify software, on-demand. As supporters of the open source community, we believe it is important to be clear when our software is free and open source, and when it isn’t. Join our virtual and in-person events; engage with our teams in our Community Forum and Slack workspace; follow our source code repos; and collaborate in the open with our engineers and product teams around new ideas and features.3K members
ForumChatEventsPaidCourses4 views / month
DHIS2 Community of Practice
on discourse
The DHIS2 Community of Practice is a global, human-centered network that connects users, implementers, and developers to collaboratively address real-world challenges. It serves as a vital forum for sharing innovations and knowledge, fostering continuous improvement and local ownership of DHIS2 solutions for public good.12K members
ForumEventsNewsletterJobsCourses
Open Compute Project
Open Compute Project (OCP) aims to develop open hardware solutions for data centers. The OCP is an initiative made up of cheap, vanity-free servers, modular I/O storage for Open Rack (a rack standard designed for data centers to integrate the rack into the data center infrastructure) and a relatively “green” data center design.8K members
ForumPairingEventsPaid
Buefy
on github and discord
Buefy is a user interface component library made on top of Vue.js and Bulma; two fresh, but well-known, frameworks. Buefy has two core principles: 1. keep stuff simple and 2. be lightweight.1K members
ForumChat2 views / month
r/opensource
on reddit
A subreddit for everything open source related (for this context, we go off the definition of open source here http://en.wikipedia.org/wiki/Open_source)357K members
Forum2 views / month
FAQ
Community size
- Tiny: 0 communities (<20 members)
- Small: 0 communities (20-100 members)
- Medium: 2 communities (100-1,000 members)
- Large: 7 communities (1,000-10,000 members)
- Huge: 6 communities (10,000-100,000 members)
- Massive: 2 communities (100,000-1M members)
- Gigantic: 0 communities (1M+ members)
Community features
Community platforms
- Discord: 8 communities
- Github: 6 communities
- Slack: 4 communities
- Reddit: 2 communities
- Discourse: 1 communities
- Telegram: 1 communities