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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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Shy Ruparel for Temporal

May 26

Behind The Badge: How We Built 2,000 Hackable Badges For Temporal Replay

#temporal #hardware #ai #opensource

12 min read

tokenmixai

May 27

I burned through DeepSeek's 5M free tokens in 14 days — here's the exact math

#deepseek #ai #llm #opensource

5 min read

May 27

How close is your DynamoDB emulator to AWS?

#dynamodb #aws #testing #opensource

4 min read

May 27

I Built FreeDevUtils — 60+ Free In-Browser Developer Tools using github copilot and google gemini pro for developer community

#devtool #webdev #productivity #opensource

2 min read

BMBOMICH

May 14

I built the most comprehensive source-visible license ever written — 276 clauses, free to use

#webdev #programming #opensource #github

2 min read

May 14

Armorer Guard Learning Loop: live local feedback for AI-agent security, without model drift

#rust #security #ai #opensource

2 min read

Haji Rufai

May 27

Building a SQL Query Engine from Scratch in Python: Lexer Parser Optimizer Executor

#python #database #tutorial #opensource

5 min read

May 27

Seeing Is Understanding: How I Built a JS Execution Visualizer

#javascript #webdev #opensource #visualization

4 min read

Kethan Dosapati

May 15

I was sick of bad health apps, so I built my own with Next.js

#typescript #opensource #buildinpublic #webdev

2 min read

Megha mukherjee

May 27

Three LLM Infrastructure Problems That Shouldn't Exist in 2026

#llm #opensource #typescript #ai

2 min read

May 13

I open-sourced passport photo specs for 100 countries (MIT, JSON, public API)

#opensource #webdev #api #javascript

5 min read

GitHub “Finish-Up-A-Thon” Challenge Submission

Abhas Kumar Sinha

May 27

I Revived My Abandoned AI Documentation Tool and Turned It Into Gitdocs AI

#devchallenge #githubchallenge #ai #opensource

5 min read

AnubhavBharadwaaj

May 27

I Built a Free Deepfake Detector in 3 Hours — Here's the Architecture

#ai #machinelearning #opensource #python

2 min read

JP Eybers

May 13

How I Built a Production Discipline System for AI Coding Agents

#ai #productivity #webdev #opensource

4 min read

May 18

How I Give LLMs Perfect Code Context Without Hallucinations — Using a Single CLI Tool

#ai #rust #programming #opensource

4 min read

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