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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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Lymah

Oct 29

Building Effective Prompts and Workflows for Code Review with goose

#goos #ai #opensource #mcp

21 min read

Oct 17

`ultrahtml` library in Nitro codebase.

#html #opensource #nitro #ast

2 min read

Sohan Lal

Oct 17

Image Labeling Tools: A Simple Guide for Beginners

#ai #opensource #webdev #computervision

5 min read

Oct 29

Building a Cross-Platform CLI Tool with TypeScript

#typescript #javascript #cli #opensource

2 min read

tiramisu-framework

Oct 29

Building Tiramisu: An Open-Source Multi-Expert RAG Framework for Marketing Consultancy

#ai #python #opensource #rag

3 min read

NocoBase

Oct 16

NocoBase Weekly Updates: Optimization and Bug Fixes

#news #opensource #lowcode #nocode

4 min read

Hacktoberfest: Open Source Reflections

Lymah

Oct 30

Hacktoberfest 2025 Reflection: Three Years, Three Lessons, One Evolution

#devchallenge #hacktoberfest #opensource

7 min read

Hacktoberfest: Maintainer Spotlight

Jessica Temporal

Oct 17

Contribua com o GitFichas

#hacktoberfest #ai #git #opensource

3 min read

Hacktoberfest: Maintainer Spotlight

Jessica Temporal

Oct 17

Contribute to GitFichas

#hacktoberfest #ai #git #opensource

2 min read

Oct 16

Tutorial: Intro to Apache Iceberg with Apache Polaris and Apache Spark

#bigdata #dataengineering #opensource #tutorial

20 min read

Jayson DeLancey for Semgrep

Oct 29

Semgrep Newsletter | 30, 300, 3000, MCP, and Gartner

#security #mcp #opensource #cybersecurity

5 min read

Santiago Fernández

Oct 15

Implementing Parallel PDF Batch Processing in Rust

#showdev #rust #programming #opensource

4 min read

Hacktoberfest: Maintainer Spotlight

Hang Huang

Oct 15

Announcing InsForge’s Hacktoberfest 2025 — Contribute, build, and win

#opensource #hacktoberfest #insforge #programming

1 min read

Hacktoberfest: Contribution Chronicles

Hitesh Sachdeva

Oct 28

HactoberFest's Week 3: Fixing a Type-Casting Issue in Kestra’s Chunk Pebble Filter

#opensource #backend #java #hacktoberfest

3 min read

Kazu

Oct 28

Building a Culture of Documentation Quality in CI/CD

#markdown #cicd #documentation #opensource

5 min read

Oct 29

My PGConf EU 2025 experience

#techtalks #postgres #opensource #community

4 min read

Steven Hur

Oct 28

Fixing Type Hints for Callable Objects with Custom Signatures in Dagster

#machinelearning #python #dataengineering #opensource

3 min read

dantiel

Oct 28

Announcing ÆtherCodex — a Hermetic AI Coding Oracle (TextMate today, portable core)

#ai #devtools #opensource #textmate

2 min read

Oct 16

Lessons from Working with the OpenTelemetry Collector [Part 3]

#webdev #opensource #beginners #tutorial

2 min read

Oct 15

👋 Hey Dev Community! I'm Rohit — The Mind Behind CodeWithLucifer 💻

#nextjs #python #fullstack #opensource

2 min read

Oct 15

How I changed C++ forever

#cpp #ai #opensource #codenewbie

1 min read

VebGen Official

Oct 20

Building an AI Agent for Django with Zero-Token AST Intelligence: My 8-Month Journey

#python #django #ai #opensource

2 min read

Oct 28

How to find an open source project to contribute to?

#opensource #programming #beginners

1 min read

Owen

Oct 19

Elba Lang

#programming #zig #opensource #git

2 min read

Mohammed Ibrahim

Oct 28

Puppeteer C# vs IronPDF: Best PDF Library for .NET Developers (With Code Examples)

#programming #dotnet #pdf #opensource

8 min read

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