Open Source - DEV Community

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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).

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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Onur Kesim

Aug 27

I Wrote a Tool to Find Blind Spots. It Had One.

#testing #python #devops #opensource

7 min read

Alberto Barrago

Aug 27

I Built a CLI to Answer One Question: What Will This Change Break?

#programming #devops #go #opensource

5 min read

sword luan

Aug 28

I Built GitHub Trending #1. The Code Passed, but the Main UI Still Would Not Start

#ai #opensource #github #testing

3 min read

Sharif

Aug 28

ValidX v1.0.1 Changelog

#java #opensource #programming #softwaredevelopment

3 min read

Aurelio Nakamura

Aug 27

I gave my data-file tool an MCP server — so an AI assistant can explore your CSVs and hand you an offline HTML report

#showdev #ai #mcp #opensource

3 min read

Mu'il Dev

Aug 28

GitHub Trending Digest — 28 Agustus 2026

#github #trending #opensource #teknologi

3 min read

Aug 28

StackBlitz + GitHub: The Missing Link in the Developer Portfolio

#discuss #webdev #opensource #reviews

5 min read

Aug 27

A Port Number Is Not an Identity

#showdev #swift #opensource #productivity

4 min read

Aug 27

Apache Data Lakehouse Weekly: August 19 to 26, 2026

#data #database #opensource #softwaredevelopment

25 min read

Aug 27

Why I Built a Privacy-First Time Tracker with Python, Tkinter, and SQLite

#showdev #python #opensource #privacy

5 min read

Dylan

Aug 27

Open Source the Product and Let Developers Distribute It

#opensource #marketing #startup #indiehackers

2 min read

Fibula

Aug 27

Claude Code as Creative Director

#claude #ai #opensource #automation

5 min read

Aug 27

I built an open-source directory of 50+ free public APIs with daily automated health-checks

#opensource #ai #devops #api

1 min read

Eduardo Lázaro

Aug 27

AI agents in Laravel with Laragents

#laravel #php #opensource #ai

6 min read

Abhishek Chandra

Aug 27

I Built 29 Android Hardware and Security Tools in One Open-Source App

#showdev #android #kotlin #opensource

1 min read

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