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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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Cover image for The Programmer's Fulcrum 16 January, 2026

Reuben Walker, Jr.

Jan 18

The Programmer's Fulcrum 16 January, 2026

#fediverse #opensource #activitypub #programming

9 min read

Dec 16 '25

MindsEye & MindScript: A Ledger-First Cognitive Architecture Technical Whitepaper v1.0

#mindseye #programming #ai #opensource

31 min read

Cover image for Stop wasting time configuring MERN: I built a production-ready TypeScript boilerplate

JASEEL TA

Dec 14 '25

Stop wasting time configuring MERN: I built a production-ready TypeScript boilerplate

#webdev #react #typescript #opensource

1 min read

Cover image for AI Compass: Your Complete Guide to Navigating the AI Landscape as an Engineer

SATINATH MONDAL

Dec 14 '25

AI Compass: Your Complete Guide to Navigating the AI Landscape as an Engineer

#ai #machinelearning #opensource #beginners

4 min read

Cover image for NimbleMock: A Modern, Blazing-Fast Mocking Library for .NET (34x Faster Than Moq)

Dec 13 '25

NimbleMock: A Modern, Blazing-Fast Mocking Library for .NET (34x Faster Than Moq)

#dotnet #opensource #tdd #mocking

3 min read

Cover image for Porting Mistreevous to C#: A High-Performance Behavior Tree Library for Modern .NET

Dec 14 '25

Porting Mistreevous to C#: A High-Performance Behavior Tree Library for Modern .NET

#dotnet #csharp #gamedev #opensource

4 min read

Jan 6

I built a CI contract guard for GitHub Actions (it catches workflow/config drift) — feedback wanted

#github #devops #opensource #cicd

2 min read

Dec 15 '25

Testing in Umami codebase - Part 1.0

#opensource #umami #testing #architecture

3 min read

PikaPods

Jan 7

Kickstart 2026: Deploy Your First Open-Source App on PikaPods

#beginners #devops #opensource #tutorial

5 min read

Cover image for Parallel Agents Are Easy. Shipping Without Chaos Isn’t.

rokoss21

Jan 18

Parallel Agents Are Easy. Shipping Without Chaos Isn’t.

#webdev #ai #programming #opensource

6 min read

Cover image for Open Hallucination Index (OHI): turning “Plausible AI” into “Verifiable AI” (LLMs as Gardeners of the Graph) 🌱🧠

Zimtzimt

Jan 7

Open Hallucination Index (OHI): turning “Plausible AI” into “Verifiable AI” (LLMs as Gardeners of the Graph) 🌱🧠

#ai #llm #opensource #computerscience

5 min read

Szilárd Pálnagy

Dec 13 '25

"How I built a 'Forever' File Uploader with Vanilla JS and No Backend"

#showdev #javascript #webdev #opensource

1 min read

Jan 7

Building a RAG-Powered Documentation Assistant: Why I Used Bifrost LLM Gateway Instead of Direct API Calls

#programming #ai #opensource #rag

5 min read

Marabesi

Jan 18

Hexagonal architecture - Another way to the hexagone

#programming #webdev #architecture #opensource

7 min read

Cover image for ->> Day-16 AWS IAM User Management with Terraform

Jan 7

->> Day-16 AWS IAM User Management with Terraform

#devops #opensource #aws #cloud

3 min read

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