Skip to content

DEV Community

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

👋 Sign in for the ability to sort posts by relevant, latest, or top.

Dec 18 '25

Testing in Umami codebase - Part 1.3

#umami #opensource #testing #architecture

3 min read

SELJI (selji.com)

Jan 22

Building SELJI: Open-Source Tools for Zero-Noise Product Research

#opensource #seo #automation #webdev

3 min read

Sylvester Promise

Dec 17 '25

Day 27 of improving my Data Science skills

#discuss #ai #productivity #opensource

3 min read

Tru

Jan 22

I Built an Offline Passive Income Generator (No APIs, No AI Calls)

#opensource #webdev #cli

2 min read

Soumyajit Mondal for Apertre 3.0

Dec 17 '25

Apertre 3.0: A 30-Day Open-Source Journey for Developers 🚀

#webdev #programming #opensource #github

1 min read

yehuda v

Dec 17 '25

Control Windows Volume With Mouse Side Buttons

#showdev #microsoft #tooling #opensource

1 min read

Acontext

Dec 18 '25

Acontext: Where Context Data Becomes the Foundation for Agent Learning

#ai #agents #opensource #programming

5 min read

Arshvir

Dec 17 '25

I built a privacy-first IP API and it's free.

#discuss #programming #webdev #opensource

1 min read

Dec 17 '25

The Long Echo Toolkit: Preserving Your Digital Life

#python #cli #opensource #sqlite

3 min read

Behram

Jan 12

How I built a "Magic Move" animation engine for Excalidraw from scratch published

#react #animation #webdev #opensource

3 min read

Can Arkadaş Deliktaş

Jan 21

PassForgePro: Learning-focused Local-Only Password Manager

#beginners #python #opensource #security

2 min read

Vitor Veiga Vasconcelos Neto

Dec 21 '25

I’m building an open-source visual layer on top of GitHub

#showdev #tooling #github #opensource

2 min read

Dec 17 '25

A new PHP8+ Unit Testing Framework called MicroUnit

#webdev #php #testing #opensource

2 min read

fmerian

Jan 21

Launching Mastra 1.0 on Product Hunt - Reasoning

#showdev #devjournal #ai #opensource

2 min read

Abdessamad Ammi

Dec 17 '25

Por Qué el 47% de Empresas Están Migrando de GPT-4 a Open Source LLMs en 2025

#machinelearning #llm #opensource #mlops

2 min read

👋 Sign in for the ability to sort posts by relevant, latest, or top.