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Open Source

May The Source Be With You! Articles about Open Source and Free Software as a philosophy, and its application to software development and project management.

submission guidelines

UPDATED APRIL 8, 2020

To keep this tag clean and meaningful, please ensure your post fits into at least one of the following categories:

Organizing, managing, running, or working in an Open Source project.
Open Source philosophy, licensing, and/or practical and legal topics thereof.
Advocacy and adoption of Open Source philosophy.

DO NOT use this tag if you are simply using technologies which happen to be open source.

You should NOT use this tag for any of the following:

Promoting open source projects, such as feature lists or announcements. (Use #news or Listings.)
Contributor requests. (Use #contributorswanted or Listings.)
Tutorials/articles that happen to use an open source tool. (Use appropriate technology tags.)
Showing off something you've built that happens to be open source. (Use the #showdev tag.)
Sharing lists of open source projects. (Use #githunt or the appropriate technology tags.)

Projects must comply with the Open Source Definition (see below) to legally use the term "open source".

As all "Free Software" officially complies with the standards of Open Source anyway, this tag covers both (collectively, FOSS).

about #opensource

Open Source is so much more than "you can read the code". It is formally defined by the Open Source Initiative.

"Open Source" should not be confused with the similar Free Software, which is defined by the Free Software Foundation. Generally, all Free Software is also Open Source, and the two camps often cooperate; however, the concepts are distinct! (The tags are merged here on DEV.to for simplicity, however.)

Open Source Hardware is defined and overseen by the Open Source Hardware Assocation

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Feb 16

Vouch: Mitchell Hashimoto’s Experiment in Restoring Trust to Open Source

#discuss #ai #opensource

3 min read

Mack

Feb 16

I Built a Free Email Signature Generator in a Day — No Backend Required

#webdev #html #javascript #opensource

3 min read

DemoJacob

Feb 16

Your AI Agent Knows Your Passwords — Here's How I Fixed It

#security #opensource #ai #openclaw

4 min read

Feb 16

Why I Rewrote My Email Editor from Scratch: From Blocks to Atoms Rewrite

#opensource #vue #webdev #email

3 min read

bingkahu

Feb 16

I Asked AI to Build Me a Pokémon Game in the Browser. It Delivered a Full AAA RPG.

#ai #webdev #programming #opensource

4 min read

Pat

Feb 16

I Rebuilt My Agent Framework From Scratch. Here's Why TypeScript Won.

#opensource #typescript #ai #webdev

4 min read

Rizky Bachtiar Irwanto

Feb 16

Building MultiWA: An Open-Source Self-Hosted WhatsApp API Gateway

#opensource #webdev #docker #typescript

2 min read

Feb 16

How We Replaced MinIO with Garage for Self-Hosted S3 Storage

#opensource #selfhosted #docker #rust

4 min read

ecap0

Feb 16

The State of MCP Server Security in 2026 — 118 Findings Across 68 Packages

#security #ai #mcp #opensource

3 min read

XMovieHub

Feb 16

XMovieHub: การออกแบบแพลตฟอร์มวิดีโอแบบมีโครงสร้าง เพื่อการค้นหาที่มีประสิทธิภาพ

#webdev #opensource #softwaredevelopment

1 min read

Nguyen Phuc Hai

Feb 17

Building a Desktop AI Chat App for ChatGPT, Claude, Gemini & Ollama

#openai #kotlin #ai #opensource

19 min read

MDTools

Feb 16

We Built 100+ Free Clinical Calculators for Doctors — Here's What We Learned

#showdev #opensource #sideprojects #webdev

3 min read

David

Feb 17

I'm tired of looking for free APIs And I put this together

#showdev #opensource #beginners #webdev

2 min read

Feb 16

The GitHub Copilot SDK: Agents for Every App

#github #ai #devex #opensource

8 min read

Feb 16

I Built an Open-Source Security Scanner for AI Agents — Here's What I Found Scanning My Own

#security #ai #opensource #webdev

3 min read

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