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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 Tired of Claude Code Ignoring Your CLAUDE.md? I Built claudemd-guard

Hiro-Chiba

Apr 19

Tired of Claude Code Ignoring Your CLAUDE.md? I Built claudemd-guard

#showdev #claude #ai #opensource

2 min read

Cover image for Decoding Devnovate: Architecting a Unified Digital Ecosystem

Gopimadhav Ponnala

Apr 19

Decoding Devnovate: Architecting a Unified Digital Ecosystem

#showdev #architecture #opensource #softwareengineering

5 min read

Cover image for Distros Linux más atractivas de 2026: GNOME, KDE y Hyprland

lu1tr0n

Apr 19

Distros Linux más atractivas de 2026: GNOME, KDE y Hyprland

#opensource #linux #programming #devops

8 min read

k38f

Apr 16

How I built a progress bar library in 300 lines of Python

#python #tutorial #cli #opensource

6 min read

Cover image for Building KiranaMitra: An Offline-First POS App for Indian Kirana Stores with React Native

Hardik Kanajariya

Apr 20

Building KiranaMitra: An Offline-First POS App for Indian Kirana Stores with React Native

#reactnative #typescript #opensource #mobile

4 min read

Cover image for 10 Open-Source Security Tools Every Node.js Developer Should Know

Tommaso Bertocchi

Apr 23

10 Open-Source Security Tools Every Node.js Developer Should Know

#security #node #opensource #webdev

5 min read

Yeskendir Salgara

Apr 18

I built a token observatory for Claude Code because I was tired of flying blind

#rust #ai #claudecode #opensource

1 min read

Apr 18

Eval-driven development for a local-LLM agent: how I shipped Lore 0.2.0 with confidence

#agents #llm #opensource #testing

6 min read

Cover image for I Built a Python Library That Classifies 3000+ Number Types — At 15

Apr 18

I Built a Python Library That Classifies 3000+ Number Types — At 15

#python #opensource #mathematics #beginners

2 min read

Cover image for I've been building an animation library for years — here's SmoothUI

Edu Calvo

Apr 18

I've been building an animation library for years — here's SmoothUI

#react #animation #tailwindcss #opensource

4 min read

Bhabishya Bhatt

Apr 18

I built a CLI that roasts HTTP status codes instead of just logging them

#node #typescript #cli #opensource

5 min read

Cover image for Govern AI agents from your CLI

João André Gomes Marques

May 2

Govern AI agents from your CLI

#ai #security #opensource #tutorial

3 min read

Cover image for Stop Losing Python Progress After Crashes (Simple Solution)

shivvvvv

Apr 19

Stop Losing Python Progress After Crashes (Simple Solution)

#showdev #opensource #productivity #python

1 min read

Cover image for ML-DSA receipts in COSE for SCITT transparency services

João André Gomes Marques

May 2

ML-DSA receipts in COSE for SCITT transparency services

#ai #security #opensource #tutorial

3 min read

Ayman Seif

Apr 19

TEOS Sentinel Shield: Blocking Unsafe AI Code Before Execution

#ai #security #node #opensource

2 min read

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