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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 ErrExplain: Turning Confusing Errors into Clear Fixes 🚀

Abhi Varde

Oct 3

ErrExplain: Turning Confusing Errors into Clear Fixes 🚀

#opensource #aisdk #vercel #appwritehack

2 min read

Nov 3

Day 1 of building Secrin

#ai #architecture #opensource #github

1 min read

Nov 4

From AI Chaos to Context Engineering: Lessons from Building Packmind OSS

#tooling #ai #productivity #opensource

2 min read

Cover image for 🎃 Quote.Vote Hacktoberfest 2025 — Building Civic Tech, One Pull Request at a Time

Hacktoberfest: Maintainer Spotlight

Louis Girifalco

Nov 3

🎃 Quote.Vote Hacktoberfest 2025 — Building Civic Tech, One Pull Request at a Time

#devchallenge #hacktoberfest #opensource #webdev

3 min read

Hacktoberfest: Contribution Chronicles

ElshadHu

Nov 4

Hacktoberfest Recap

#hacktoberfest #beginners #devjournal #opensource

3 min read

Cover image for 6 Merged PRs, 6 Different Projects, 583 Lines of Code: My Hacktoberfest 2025 Story

Hacktoberfest: Contribution Chronicles

Nov 1

6 Merged PRs, 6 Different Projects, 583 Lines of Code: My Hacktoberfest 2025 Story

#hacktoberfest #opensource #github #devchallenge

9 min read

Nov 3

Using GNU toolchain for Windows kernel-mode drivers

#microsoft #tutorial #c #opensource

4 min read

Oct 14

Krish Naik: Complete RAG Crash Course With Langchain In 2 Hours

#ai #opensource

1 min read

Cover image for ilamy Calendar v1.0.0: Resource Calendar is Here! 🎉

kcsujeet

Oct 13

ilamy Calendar v1.0.0: Resource Calendar is Here! 🎉

#react #opensource #calendar #typescript

4 min read

Nov 2

Writing Your First Compiler - Part 2: What Is a Compiler?

#computerscience #programming #tutorial #opensource

5 min read

Hacktoberfest: Contribution Chronicles

ElshadHu

Nov 2

Building Confidence Through Open Source

#showdev #api #hacktoberfest #opensource

3 min read

Cover image for Who's hiring — November 2025

fmerian

Nov 3

Who's hiring — November 2025

#career #devrel #opensource

2 min read

Sep 30

Automating Data Quality Checks: A Practical Guide Using Dagster and Great Expectations

#datascience #automation #opensource #data

13 min read

Nov 2

Writing Your First Compiler - Part 1: Introduction

#computerscience #programming #tutorial #opensource

2 min read

Cover image for 50 Best GitHub Repositories That Will Make You a great Developer

Nov 3

50 Best GitHub Repositories That Will Make You a great Developer

#github #opensource #softwareengineering #webdev

2 min read

Cover image for How I Built an Agentic AI Coach That Turns Garmin Data Into a Training Partner

Hacktoberfest: Maintainer Spotlight

Leon Zajchowski

Oct 31

How I Built an Agentic AI Coach That Turns Garmin Data Into a Training Partner

#devchallenge #hacktoberfest #opensource #agents

2 min read

Cover image for Your Web App Keeps Running in Hidden Tabs — Here’s the Fix

Nov 2

Your Web App Keeps Running in Hidden Tabs — Here’s the Fix

#webdev #react #opensource #performance

4 min read

Cover image for Building an Open Source Real-Time Crypto Price Tracker with Bun's Native WebSocket

Magic.rb

Nov 2

Building an Open Source Real-Time Crypto Price Tracker with Bun's Native WebSocket

#webdev #buildinpublic #opensource #bunjs

6 min read

Cover image for 9 Productivity Hacks - AI Tools That I'm Using in 2025

Nov 3

9 Productivity Hacks - AI Tools That I'm Using in 2025

#ai #productivity #webdev #opensource

6 min read

Cover image for It took me a month to solve — Why chatgpt doesn't have a search, and i open sourced it!

siv-io

Sep 30

It took me a month to solve — Why chatgpt doesn't have a search, and i open sourced it!

#opensource #chatgpt #productivity #tooling

2 min read

Cover image for Generate Human-Friendly Random Codes in PHP with Crockford’s Base32

Sep 30

Generate Human-Friendly Random Codes in PHP with Crockford’s Base32

#php #opensource #devtools #webdev

1 min read

Cover image for The 🐍 SDK for the Uniswap Universal Router 🦄 is part of Hacktoberfest 2025

Elnaril

Sep 30

The 🐍 SDK for the Uniswap Universal Router 🦄 is part of Hacktoberfest 2025

#programming #python #blockchain #opensource

1 min read

Jessica Temporal

Oct 2

Projetos Brasileiros para contribuir nesse #Hacktoberfest 2025

#pullrequest #opensource #hacktoberfest

3 min read

Sep 30

The Rise of Open-Source Data Catalogs: New Opportunities For Implementing Data Mesh

#datascience #data #opensource #architecture

5 min read

Cover image for Day 20 of My 90 Days of Code Series – Basic Bank Account System in Python

momina raheel (Moona)

Sep 30

Day 20 of My 90 Days of Code Series – Basic Bank Account System in Python

#programming #beginners #python #opensource

1 min read

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