Open Source (2026)

If you want to learn about open-source software, I'd follow a mix of open-source maintainers, developer educators, Linux and infrastructure experts, and people who explain how open-source communities work. The best people to follow depend on whether you want to build software, discover useful tools, contribute to projects, or understand the open-source movement.

Here’s a starter list I'd recommend.

1. People worth following

Kelsey Hightower

Cloud native · Kubernetes · Developer culture

Great for understanding the ecosystem around open infrastructure, containers, and the philosophy of building software in public.

GitHub · Talks and interviews

Mitchell Hashimoto

Developer tools · Building software

Follow his work to learn how polished developer tools are designed, built, and released. He's known for projects including Ghostty and his earlier work at HashiCorp.

GitHub · Website

Evan You

JavaScript · Frameworks · Open-source maintenance

A useful person to study if you want to understand how popular open-source projects evolve and how maintainers balance features, contributors, and long-term sustainability.

GitHub · Vue.js

Julia Evans

Linux · Command line · Programming fundamentals

Excellent for learning the technical foundations behind many open-source tools through approachable explanations and visual guides.

Blog · Wizard Zines

Simon Willison

Open-source tools · Python · AI tooling

Particularly useful for seeing how an experienced developer experiments with tools, publishes projects, documents discoveries, and shares working code.

Blog · GitHub

Andreas Kling

Systems programming · Browsers · Building from scratch

Follow his work if you want to see the realities of developing ambitious open-source software, including debugging, architecture, and incremental progress.

GitHub · Ladybird

2. Organizations and publications to follow

These are especially useful because they cover the broader open-source ecosystem, not just one developer's projects.

The ReadME Project

Stories about developers, maintainers, and the people behind popular software.

Explore on GitHub

The Changelog

Interviews with maintainers about how software gets built, why projects succeed, and where the industry is going.

Listen and read

Open Source Initiative (OSI)

Learn about open-source licenses, software freedoms, and what the term “open source” actually means.

Official website

GitHub

Follow active repositories, inspect code changes, read project discussions, and find beginner-friendly contribution opportunities.

Explore projects · Open Source Guides

GitHub's maintainer coverage is also worth reading to understand the less-visible work behind open source: reviewing contributions, fixing security issues, and keeping projects sustainable. The latest on open source maintainersMaintainer Month 2026: Celebrating the People Who Keep Open Source Running

3. Who I'd follow first

If you don't want to overwhelm your feed, start with these five:

1. Simon Willison - practical projects and technical discoveries.
2. Julia Evans - learn how software works.
3. Mitchell Hashimoto - building excellent developer tools.
4. Evan You - managing and evolving a major open-source project.
5. The Changelog - discover other people and projects worth following.

My biggest recommendation: follow the maintainers of software you actually use. You'll learn more by watching a project you care about receive bug reports, discuss design decisions, review pull requests, and ship releases than by following a long list of famous developers.

One question so I can tailor the list

What do you most want to learn about open source?

Learning about open-source software (OSS) involves understanding not just how to write code, but how communities govern themselves, how licenses work, and how maintainers scale their projects.

Depending on what aspect of open source you want to focus on, here are key people, organizations, and platforms to follow:

1. Open Source Pioneers & Leaders

• Linus Torvalds: While he isn't overly active on social media, keeping up with his updates on the Linux Kernel Mailing List (LKML) or release notes on GitHub gives a masterclass in code quality and project governance.

• Brendan Eich (@BrendanEich): Creator of JavaScript and co-founder of Mozilla. Great for historical and architectural perspectives on massive open-source ecosystems. Top 13 programmers & developers to follow on Twitter for coding

• Addy Osmani (@addyosmani): Engineering leader at Google who has created prominent open-source projects (like TodoMVC and Yeoman) and writes extensively on engineering practices. Top 13 programmers & developers to follow on Twitter for coding

2. Community Builders & Developer Advocates

• Kelsey Hightower (@kelseyhightower): Formerly of Google, Kelsey is legendary in the cloud-native and open-source community. He is exceptional at explaining complex infrastructure software and community building in an accessible way.

• Cassidy Williams (@cassidoo): CTO, advisor, and open-source advocate who regularly shares insights on developer experience, tech careers, and community engagement. 10 influencers that developers should be following - Algolia

• Sarah Drasner: A prominent engineering leader and open-source advocate known for her work on web standards, animation libraries, and developer education.

3. Essential Organizations & Foundations

Following individuals is great, but open source happens largely inside foundations. Keep an eye on these accounts and their blogs:

• The Linux Foundation: The umbrella organization for thousands of critical open-source projects.

• GitHub (@github / GitHub Readme): Their official blog and engineering channels frequently highlight open-source trends, security best practices, and rising projects.

• The Apache Software Foundation & CNCF (Cloud Native Computing Foundation): Essential if you want to learn about enterprise-grade open-source governance and massive distributed projects (like Kubernetes).

4. Where to Look Beyond Social Media

If you want to learn open source by doing and observing, social media is only half the battle. Instead, follow these practices:

• The GitHub Trending Page: Check this weekly to see which repositories are gaining sudden traction and what new tools developers are building.

• Open Source Friday: Explore opensource.guide, an initiative by GitHub that provides comprehensive, step-by-step documentation on how to contribute, license software, and build healthy communities.

• Issue Trackers & Pull Requests: Find a project you use daily (e.g., VS Code, React, Python) and read through closed pull requests and architectural decision records (ADRs). Watching how maintainers debate and merge code is one of the fastest ways to learn.

What specific area of open source are you most curious about - building your own project, contributing to existing codebases, or understanding licensing and community management?

To dive into open-source software (OSS), following key developers, community builders, and major project maintainers across platforms like X (formerly Twitter), Mastodon, and GitHub provides direct insight into how open-source ecosystems operate.

• • ** Sindre Sorhus** @sindresorhus is a prolific open-source contributor known for maintaining hundreds of essential package repositories and "awesome lists" that make developer resources globally discoverable. SignalFire's Open Source Superstars Ranking: The Top 100

• Brian Douglas @bdougieYO is a developer advocate and founder of OpenSauced who frequently shares insights on navigating and contributing to the open-source community. 9 open source leaders I enjoy following on Twitter | Opensource.com

• ** Kelsey Hightower** @kelseyhightower is a prominent voice in cloud-native and open-source infrastructure (formerly of Google Cloud and Kubernetes) who regularly discusses community governance and tech culture. 12 Must-Follow Developer Thought Leaders to Follow on Twitter

• The Linux Foundation Linux Foundation and The Apache Software Foundation Apache Software Foundation share crucial industry updates, security insights, and governance trends on their official channels.

• Open Source Initiative (OSI) OSI offers policy updates, licensing news, and deep dives into the legal and philosophical foundations of the movement.

Would you like recommendations tailored to a specific programming language or aspect of open source (such as getting started with your first pull request, licensing, or community management)?

Follow maintainers and communities around software you already use, plus the Open Source Initiative, the Linux Foundation, and the Apache and Debian communities for a broader view. For beginner-friendly learning, start with Open Source Guides and follow GitHub’s ReadME Project for contributor stories and practical advice.(enterprisersproject.com)(opensource.guide)(github.com)

Follow influential open-source contributors, foundations, and companies to learn effectively. Start with individual developers like Sindre Sorhus and Anthony Fu, then expand to organizations such as the Linux Foundation, Apache Software Foundation, and companies like Microsoft , Google , and Red Hat that drive major projects.

🌟 Influential Individuals

• Sindre Sorhus (@sindresorhus) Creator of the Awesome list, which curates resources across open-source. His work in JavaScript and Swift libraries is widely used.SignalFire’s Open Source Superstars Ranking: The Top 100 Contributors

• Anthony Fu (@antfu) Maintainer of VueUse and contributor to the Vue ecosystem. His utilities make modern frontend development more accessible.SignalFire’s Open Source Superstars Ranking: The Top 100 Contributors

• Jake Wharton (@jakewharton) Known for Android libraries and contributions to Kotlin and Java projects.SignalFire’s Open Source Superstars Ranking: The Top 100 Contributors

• Peter Steinberger, Alexey Milovidov, Teknium Ranked among the most active contributors globally, with hundreds of thousands of commits in the past year.Open Source Leaderboards | LFX Insights

🏛️ Key Organizations & Foundations

• Linux Foundation – Supports nearly 1,000 projects including Linux and Kubernetes.The Big Players in Open Source - SolarWinds Blog

• Apache Software Foundation (ASF) – Maintains Apache HTTP Server and Hadoop.The Big Players in Open Source - SolarWinds Blog

• Free Software Foundation (FSF) – Advocates for free software and created the GNU Project.The Big Players in Open Source - SolarWinds Blog

• Open Source Initiative (OSI) – Defines and safeguards open-source principles.Associations – Open Source Initiative

• Eclipse Foundation & Mozilla Foundation – Focus on developer tools and open web technologies.The Big Players in Open Source - SolarWinds Blog

🏢 Companies Driving Open Source

• Microsoft – Largest contributor worldwide, with projects like Visual Studio Code and Azure SDKs.Major Companies Leading Open Source in 2026

• Google – Originated Kubernetes , TensorFlow , Go , and Angular.Major Companies Leading Open Source in 2026

• Red Hat – Entirely open-source business model, leading in enterprise Linux.Major Companies Leading Open Source in 2026

• Meta – Maintains PyTorch and React , widely used in AI and frontend development.Major Companies Leading Open Source in 2026

• IBM & NVIDIA – Significant contributors in AI, cloud, and hardware ecosystems.Open Source Leaderboards | LFX Insights

📌 Suggested Next Steps

1. Follow developers on GitHub/Twitter – Start with Sindre Sorhus and Anthony Fu.

2. Subscribe to foundation newsletters – Linux Foundation and OSI regularly publish updates.

3. Explore GitHub trending projects – Projects like Visual Studio Code and PyTorch have active communities.

4. Join open-source communities – Participate in forums like Reddit r/opensource or foundation Slack groups.

👉 Would you like me to create a shortlist of GitHub profiles and Twitter handles so you can follow them directly? That way, you’ll have a practical starting point to engage with these leaders.