Open Source Day 2025

Schrödinger Hat is an organization that aims to connect developers and the open source community.With projects, events, podcasts and live-streams our goal is to share experiences and information about software development and other related subjects.The name is a tribute to the Nobel Prize-winning physicist, Erwin Schrödinger, and his most famous thought experiment, keeping the assonance of "cat" in the word "hat", as we would like to refer to the leading open source company Red Hat.

Schrödinger Hat

Schrödinger Hat is at the 4th edition of its flagship Open Source Day event, Nana Bianca as location, one day dedicated to the Open Source!

Nana Bianca

The Open Source Day is at its fourth edition in Florence, Italy! In this edition, we will have a single full-day of conference, full of people passionate about the open source environment: maintainers, junior dev, senior dev, engineer manager, full stack, and so on will attend the event. Feel free to have a chat with the speakers and the sponsors.During the conference, we are going to host coffee breaks and lunch breaks. On top of that, we will hold many giveaway sessions from our sponsor and other fancy gadgets.The event will be a one single day of conference, starting on the 21st March 2025, at <a href="https://nanabianca.it/" title="https://nanabianca.it/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">Nana Bianca</a>, and it will open up the gates from 8 am, with the event starting time at 9 am.Share the event with your friends and colleagues, the language will be English, the cost will be free and it will be broadcast online. Take your ticket for the in-person or online presence!For more information visit our <a href="https://2025.osday.dev" title="https://2024.osday.dev/" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">website</a>, osday.dev.If you like the event, please <a href="https://opencollective.com/schrodinger-hat" title="https://opencollective.com/schrodinger-hat" target="_blank" data-msys-clicktrack="0" rel="nofollow noopener noreferrer">support us</a>

Agenda

We're welcoming you at the OSDay25 in Nana Bianca, Florence

Doors open

Morning intro

Open source is driving innovation at the intersection of law and technology, enabling the creation of systems that are transparent, secure, and accountable. This session will examine how open-source frameworks and confidential computing solutions are shaping the future of computational justice and reinforcing digital sovereignty.
Key topics include how Trusted Execution Environments (TEEs) and Remote Attestation are enabling verifiable compute, and how cryptographic techniques like Multi-Party Computation and Zero-Knowledge Proofs ensure privacy without sacrificing accountability. We'll also explore how these technologies empower organisations to maintain control over their data, ensuring compliance with data residency and sovereignty requirements. For instance, confidential computing allows data to be processed securely within specific jurisdictions, preventing unauthorised access and aligning with regional regulations.


Bridging Law and Technology: The Foundations and Future of Computa

Building an accessible web experience shouldn’t be overwhelming. In this talk, we’ll introduce wcagUI, an open-source UI kit that simplifies building accessible interfaces by automatically handling WAI-ARIA attributes and other key accessibility features. Built on the principles of the Web Content Accessibility Guidelines (WCAG), wcagUI helps developers and designers integrate accessibility seamlessly into their projects, reducing complexity and allowing a focus on great user experiences.
With a zero-dependencies philosophy and no view encapsulation, wcagUI is lightweight, transparent, and compatible with any tech stack. Developed using modern JavaScript and the customElements API, its reusable components manage accessibility features like WAI-ARIA roles and states automatically. wcagUI also adheres to progressive enhancement principles, ensuring components provide core functionality even when JavaScript is unavailable, making interfaces more resilient and inclusive.


wcagUI, an accessible UI kit based on WCAG patterns

An embedded system is a specialized computer designed to perform specific tasks. Some embedded systems run without an OS, while others use an OS to enable advanced functionality such as multitasking, networking, real-time processing, and more - essential for complex IoT applications.

Scaling IoT Development with Zephyr: An Embedded System OS f

At least once in the life of a software engineer or someone who works in technology, you will hear that contributing to open source is important and that you should try it. For some people, however, contributing doesn't just mean fixing a bug or updating some documentation. For these people, it means finding the right community to proudly be a part of, fighting their shyness, and then developing the confidence to jump in.
In this talk, Claire & Valeria will share their personal experiences as people who started off as contributors and then became community leaders. They will share some tips for getting started, how you can take the next step and then, eventually, become an ambassador for your community.

From shy contributor to (kinda) confide

In October 2024, our usual bug bounty hunt resulted in receiving 1570 valid reports and closing almost 1000 plugins from the official WordPress repository. This huge number looks scary and seems once again to prove the fact that WordPress ecosystem security is poor.
But is it?
Let's dive deeper into how it all happened, what were the consequences, and what we can learn from this.

How we closed almost 1000 plugins in a month - a story of the

Lunch break

In this talk I will focus on my work in science and technology: First, as an astrophysicist in the field of computational cosmology and then as a Machine Learning specialist working on Earth Observations. I will talk about my projects in these fields, and how my scientific and IT background is intertwined with my parallel music career with Nanowar Of Steel, inspiring songs like Uranus and the recent internet sensation HelloWorld.java

The Universe, The (Hello) World and Uranus

Forget traditional resumes - let your open source contributions tell your story!
My open source evolution from contributor to maintainer shows how community involvement supercharges your dev skills and leadership potential. Through real experiences, I'll demonstrate how engaging with open source projects builds your professional reputation and opens career doors, while learning directly from industry experts.
Let me show you how open source collaboration can transform your development journey and unlock your true potential!

Open Source: The Ultimate Code Career Accelerator

Large Language Models have led the charge in the generative AI landscape, particularly following the introduction of tools such as ChatGPT or Perplexity. Despite this progress, their full capabilities remain untapped, primarily due to cost-related challenges. This talk will delve into the often-overlooked financial aspects of incorporating AI into organizational structures, and the potential of open source models to achieve transparency and awareness. Although AI technologies are touted for their potential to boost efficiency and productivity, the expenses tied to their implementation can be significant and complex.

The hidden costs of AI

What happens when a successful classic Linux distribution, supported by a well-established international community of users and backed by a company, faces the challenges of a fast-paced open-source world of cloud-native technologies, containers, and Kubernetes?
Will the project abandon its roots and embrace new trends (Buy/Flight)?
Or will it stick to its original mission and values (Make/Fight)?

Make or Buy is the new Fight or Flight: The Survival Journey

In a world increasingly dominated by buzzwords and trends, terms like "cloud," "serverless," "Kubernetes," and Linux are on everyone's lips. So why move away from the now most common solutions and adopt those based on one of the operating systems in the BSD family?In computing, the goal is to solve problems. And the BSDs, in the vast majority of cases, can be excellent tools to address these challenges while also mitigating the widespread issue of IT monoculture and its related consequences.A brief introduction and analysis of the BSD family operating systems and their unique characteristics.

Why Choose to Use the BSDs in 2025

Pause

What if your tech team was a party of adventurers, and every sprint was an epic quest? Dungeons & Developers reimagines software development through the lens of fantasy role-playing games like Dungeons & Dragons. This humorous and engaging talk explores how creating character sheets for team members—highlighting their strengths, weaknesses, and “special abilities”—can foster deeper understanding, collaboration, and trust within your team.
With a lighthearted approach, we’ll also dive into how this creative framework can inspire open-source projects and team-building methodologies that gamify workflows. Whether it’s a fantasy-themed sprint planner or a role-playing retrospective, you’ll leave with practical tools, a good laugh, and fresh ideas to make teamwork fun and effective.

Dungeons And Developers: Epic Teamwork for Legendary Proj

Join me on a thrilling exploration of computer vision with Python. I've crafted solutions like a bottle cap detection app and boardgames cover identification, employing techniques such as SIFT and Hough Transform Circles. Let's delve into image processing, uncovering the secrets to building intelligent visual recognition systems together.

Despite not working directly in computer vision roles, my passion for the field has been unwavering. I've dedicated my spare time to exploring its possibilities, diving into additional projects and even tackling assignments during my university years.

Unlocking Visual Intelligence | Exploring Computer Visi

Imagine the convenience of executing TypeScript files directly with Node.js using `node file.ts`. Just a few years ago, this concept seemed like a distant dream. Today, it stands as an exciting experimental feature. This narrative dives into the journey of transforming this dream into a reality.
Integrating TypeScript natively into Node.js posed significant challenges. These hurdles included managing TypeScript’s lack of strict semantic versioning guarantees and accommodating various TS flavors.
Today, the experimental native TypeScript support in Node.js marks a transformative milestone. Beyond merely executing .ts files, it signifies a leap forward in JavaScript development.

The Path to Native TypeScript

Closing notes

Networking

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Open Source Day 2025

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Open Source Day 2025

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