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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 FACET: Contracts + Gates for LLM Systems

rokoss21

Jan 19

FACET: Contracts + Gates for LLM Systems

#webdev #ai #programming #opensource

5 min read

Cover image for I built an open source markdown note-taking web app and am sharing it with you

Jan 20

I built an open source markdown note-taking web app and am sharing it with you

#showdev #webdev #opensource #markdown

2 min read

Cover image for Building DownloadStuffs: A Modern UI for the Internet Archive

Jan 18

Building DownloadStuffs: A Modern UI for the Internet Archive

#showdev #opensource #ui #webdev

2 min read

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

Cover image for CFI Plugin v.2.0.0 Released - Export/Import Joomla Articles to/from CSV

Sergey Tolkachyov

Jan 19

CFI Plugin v.2.0.0 Released - Export/Import Joomla Articles to/from CSV

#joomla #webdev #seo #opensource

2 min read

Cover image for Designing Better Compiler Diagnostics — Lessons from building Klar

~K'

Jan 19

Designing Better Compiler Diagnostics — Lessons from building Klar

#showdev #compiling #opensource #programming

2 min read

Cover image for I let the internet vote on what code gets merged weekly. Week 2: they voted to merge every day.

Max

Jan 18

I let the internet vote on what code gets merged weekly. Week 2: they voted to merge every day.

#opensource #github #webdev #programming

4 min read

Jean-philippe Ulpiano

Jan 18

📱 Your Child Is Still Awake: Raising Kids in a World of Screens and AI

#showdev #opensource #parenting #firefox

4 min read

freerave

Jan 18

Transform VS Code into a Spiritual Environment: Meet CodeTune v1.0 🚀

#vscode #opensource #productivity #typescript

2 min read

Cover image for My new open source got 200+ stars on GitHub

Galgaldas

Jan 18

My new open source got 200+ stars on GitHub

#webdev #programming #opensource #php

1 min read

Jan 18

Just open sourced a dating platform under a custom OSI-compatible license (CPL-1.0) — would love feedback on the license itself

#opensource

2 min read

Prathamesh

Jan 18

🎬 MovieMania: Join Our Open-Source MERN Movie Tracking Platform — Contributors Wanted!"

#opensource #mern #react #webdev

2 min read

Marabesi

Jan 18

Hexagonal architecture - Another way to the hexagone

#programming #webdev #architecture #opensource

7 min read

Cover image for Making AI Data Flows Visible: Building an Open-Source Tool to Understand SaaS & LLM Data Risk

Jan 18

Making AI Data Flows Visible: Building an Open-Source Tool to Understand SaaS & LLM Data Risk

#ai #dataengineering #privacy #opensource

3 min read

Cover image for I built Workflow Automation Platform (only vibe code it) - Looking for Feedback

yureka

Jan 18

I built Workflow Automation Platform (only vibe code it) - Looking for Feedback

#showdev #webdev #opensource #automation

2 min read

Cover image for Reviving W3-Kit UI – Looking for Open Source Contributors (Web3 + UI)

Jan 18

Reviving W3-Kit UI – Looking for Open Source Contributors (Web3 + UI)

#frontend #opensource #ui #web3

1 min read

Jan 18

Why Your AI Agents Fail in Production (And How to Fix It)

#ai #opensource #python #productivity

2 min read

Jan 18

Open Source Grocery Store Management App with Python & Tkinter

#python #sideprojects #opensource #github

1 min read

Cover image for Why Content Provenance Needs Deletion Detection: Introducing CPP v1.0

VeritasChain Standards Organization (VSO)

Jan 18

Why Content Provenance Needs Deletion Detection: Introducing CPP v1.0

#cryptography #security #opensource #webdev

7 min read

Andrea Debernardi

Jan 15

From VS Code to Zed: building a FreeMarker extension because I needed one

#tooling #software #coding #opensource

3 min read

Cover image for The Developer You Could Become: Reclaiming India's Place in Open Source

dbc2201

Jan 17

The Developer You Could Become: Reclaiming India's Place in Open Source

#beginners #career #motivation #opensource

12 min read

Cover image for Tired of Messy Media Downloaders? Build a Smart CLI with Node.js and yt-dlp 🚀

Jan 17

Tired of Messy Media Downloaders? Build a Smart CLI with Node.js and yt-dlp 🚀

#javascript #node #cli #opensource

2 min read

Cover image for How to Build *The Rust Programming Language* Book Locally on Linux

Igor Giamoniano

Jan 17

How to Build The Rust Programming Language Book Locally on Linux

#rust #beginners #documentation #opensource

3 min read

Cover image for Google Just Cut Android AOSP Releases in Half (And Your Side Project Might Be Screwed)

Jan 17

Google Just Cut Android AOSP Releases in Half (And Your Side Project Might Be Screwed)

#discuss #android #opensource #mobile

5 min read

Cover image for From Academia to Industry: The World Is Bigger Than You Thought

Eduardo Gade Gusmao

Jan 18

From Academia to Industry: The World Is Bigger Than You Thought

#career #beginners #opensource #learning

3 min read

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