Open Source - DEV Community

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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).

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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Includes a Notion MCP tool demo

Anmol Baranwal for CopilotKit

Channels SDK: How to bring your Agent to any Channel (Slack, Microsoft Teams)

#tutorial #programming #opensource #beginners

14 min read

Git Diff for Human Reasoning

#discuss #security #opensource #todayilearned

8 min read

How to Configure a Custom LLM Proxy in OpenOPC (and Debug LiteLLM)

#ai #agents #opensource #python

3 min read

I built a "real job" simulator for Spring Boot learners, free & open source

#springboot #java #opensource #programming

2 min read

Maish Saidel-Keesing for AWS

How Much Does It Cost to Self-Host Open Models on AWS?

#ai #aws #infrastructure #opensource

8 min read

I made a gift for you: A clean, lightweight Markdown Previewer

#showdev #github #opensource #webdev

1 min read

I Built a Server Agent Because Uptime Checks Tell You What Failed, Not Why

#devops #monitoring #opensource #selfhosted

6 min read

One Rails request, one event: production context for coding agents

#rails #ruby #opensource #observability

7 min read

Apache Polaris 1.7.0 and the Quiet Work of Making a Catalog Trustworthy

#data #database #opensource #softwaredevelopment

25 min read

How EvalPort's Grader System Works: 11 Types for LLM Evaluation

#llm #evaluation #testing #opensource

2 min read

[ShowDev] I built a Git terminal dashboard in Python (my first proper project!) and would love some feedback 🚀

#showdev #python #beginners #opensource

2 min read

Building Enola, Part 2: From Source Code to an Architectural Fact Model

#devex #mcp #opensource #ai

5 min read

The vendor documents this bug. A 30k-star repo shipped it anyway.

#ai #llm #codereview #opensource

12 min read

Yuvraj Angad Singh

I ran my own linter against my own app. All 19 findings were wrong.

#webdev #javascript #tooling #opensource

4 min read

How I added initContainers and env vars to every deployment without Kyverno

#kubernetes #containers #webhook #opensource

3 min read

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