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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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May 7

JS Sandbox v1.0.0 — free open source desktop JavaScript scratchpad for Linux/Windows/Mac

#opensource #javascript

1 min read

May 20

Deleting the 8.4GB Python Sidecar: Pure Go + CUDA with `CGO_ENABLED=0`

#ai #programming #opensource #go

2 min read

paolomonasterolo

May 6

I built a CLI to audit Anthropic API spend. Here's what it detects.

#python #opensource #ai #devtools

5 min read

Chaitanya Krishna Kasaraneni

May 29

Why I built cloudfit

#opensource #cloud #nextflow #bioinformatics

6 min read

Konstantin

May 29

3 security bugs I shipped in my open-source SaaS — and how I fixed them

#security #opensource #selfhosted #webdev

4 min read

May 29

Building Furious Mirror — My Journey Learning Realtime Android Streaming Architecture

#python #ffmpeg #android #opensource

2 min read

Shashank Kumar Singh

May 6

I built a free AI that reads my screen and answers out loud – no API key, runs offline with Ollama

#showdev #ai #opensource #python

2 min read

Mayur

May 6

How I Built ChefMate — An AI Recipe App for Hostel & PG Students

#webdev #react #node #opensource

3 min read

Mininglamp

May 6

Full-Stack On-Device GUI Agent — Mano-P Model + Cider + AFK, All Open Source

#ai #opensource #machinelearning #apple

4 min read

May 6

Apache Data Lakehouse Weekly: April 30–May 6, 2026

#news #data #dataengineering #opensource

9 min read

Maaz Ahmed

May 29

We Built a Runtime Security Gateway for MCP Agents in 30 Days — Here's What We Learned

#mcp #ai #security #opensource

5 min read

Coden

May 29

I built a free open-source alternative to Claude Cowork because I didn’t want to pay $20/month for something that should run locally

#ai #productivity #opensource #claude

2 min read

mage0535

May 6

The #1 Pain Point of AI Assistants? They Forget. Here Is a Fix.

#opensource #ai #programming #devtools

2 min read

mage0535

May 6

Stop Fighting Your AI Coding Assistant Over UI Design

#vibecoding #opensource #webdev #design

2 min read

codev ai

May 6

I Built a VS Code Extension That Explains Your Errors Like a Best Friend

#vscode #ai #opensource #productivity

2 min read

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