Founded April 2025 · Budapest

Green Reliable Software Budapest

Practical green software for students, engineers, and builders in Budapest.

A local community exploring sustainable software, responsible engineering, and practical pathways to build systems that are reliable, useful, and aligned with long-term impact.

Part of the Green Software Foundation Community · Supported by Data Immigrant Kft.

Join the Meetup → RSVP: Green Software 101 Explore Knowledge Hub

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Three ways to engage

New to the community? Choose the path that fits where you are right now.

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Watch & Learn

Access past talks, recordings, speaker slides, and event recaps.

Watch videos →

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Join the Community

Meet students, engineers, founders, researchers, and partners building around impact.

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Build With Us

Explore open-source starter resources, projects, and practical build pathways.

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Community proof

One year of green software community

Since April 2025, we have brought together students, early-career builders, engineers, and partners to explore sustainable, reliable, inclusive, and responsible software.

215+Meetup members

6Past events

2May student events

400+Hack4Earth participants

44Teams

15Final submissions

1Year active

Latest recap

Hobby Projects to Green Production Systems

Our latest session explored what changes when code moves from a hobby project into a real system that people depend on. The conversation covered sustainable software across technical, economic, environmental, social, and individual dimensions.

TechnicalEconomicEnvironmentalSocialIndividual

A prototype becomes serious when real people begin to depend on it.

Access Recap & Resources View Meetup Group

Speaker list poster for The Engineer’s Professional Journey event

The idea

What is green software?

Green software is the practice of designing, building, and operating software with awareness of energy, carbon, infrastructure, hardware, cost, reliability, access, and long-term impact.

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Energy Efficiency

Build systems that use less energy to deliver useful outcomes.

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Carbon Awareness

Understand when and where software runs, and how energy sources affect impact.

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Hardware Efficiency

Use devices, servers, and infrastructure responsibly across their full lifecycle.

Free course

Green Software for Practitioners

A practical introductory course for software practitioners who want to understand the foundations of building, maintaining, and running greener applications.

Open Linux Foundation course →

Student Edition · Recap

Student Edition sessions are now complete

Thank you to everyone who joined the May student sessions. The event pages now remain available as a record of the programme and a pathway into the Knowledge Hub.

22 May 2026Completed

Green Software 101: Student Edition

Friday · 19:00 CEST · Online

A student-friendly introduction to sustainable software engineering: energy, carbon, hardware, cloud systems, cost, reliability, and long-term maintainability. This session has now passed.

View event on Meetup

28 May 2026Completed

Student Build Lab: From Prototype to Production

Thursday · 19:00 CEST · Online

A guided working session where students explored project ideas, hackathon concepts, class assignments, and early prototypes through maintainability, accessibility, reliability, cost-awareness, energy use, and product decisions. This session has now passed.

View event on Meetup

Knowledge Hub

Learning after the event

The Knowledge Hub brings together upcoming events, recaps, slides, learning resources, student opportunities, and community updates in one place.

May
22Green Software 101
Student Edition RSVP May
28Student Build Lab
From Prototype to Production RecapEngineer’s Professional Journey
Slides, notes, and takeaways

From events to action

Hack4Earth and Green AI momentum

In October 2025, Data Immigrant helped organize the Kaggle Community Olympiad — HACK4EARTH Green AI Challenge, a month-long open-source challenge exploring how AI can be created and used with greater environmental care.

The challenge turned community learning into submissions, demos, and practical solution-building.

Rewind Hack4Earth

400+participants

44teams

15final submissions

1 monthopen-source challenge

Partners & supporters

Partners, supporters, and ecosystem links

Our work grows through local venues, engineering teams, learning partners, and wider communities supporting sustainable software, student pathways, and responsible technology practice.

Support the community infrastructure

Help fund student sessions, learning materials, event recordings, mentorship, and build labs.

View support tiers →