Open Source conferences in Europe 2025 / 2026

Conferences ✕ Europe ✕ Open Source ✕
Asia 20
Africa 0
Europe 26
North America 24
South America 2
Oceania 0
Online 5
.NET 13
Agile 21
Android 7
Angular 21
API 8
Apple 7
AR / VR / XR 5
Artificial Intelligence (AI) 83
AWS 12
Azure 10
Big Data 78
BSD / OS 8
Business Analysis 11
C/C++ 1
CIO 6
Clojure 2
Cloud 95
Crypto / Blockchain 18
CTO 12
Cybersecurity / InfoSec 64
Data / Database 82
Data Science 79
DDD 4
DevOps 69
Django 12
Docker / Kubernetes 56
Drupal 2
Elixir 4
Fintech 15
Flutter 12
Full-stack 74
Functional programming 5
Game dev 9
Golang 8
Google 14
Hardware / IoT 8
Haskell 2
HR / Hiring / Recruiting 2
iOS / Swift 12
IT 636
IT service management 2
Java 25
JavaScript 36
Kotlin 21
Laravel 8
Large Language Model (LLM) 35
Linux / OS 10
Machine Learning (ML) 74
Microsoft 51
Mobile 15
Open Source 26
Operating Systems / OS 10
PHP 20
Postgres 5
Product management 13
Project management / PMO 19
Python 13
React 25
Ruby 11
Ruby on Rails 11
Rust 3
Salesforce 4
SAP 3
Scala 22
Scrum 14
Serverless 1
Software architecture 86
SQL 40
SRE 57
Startup 5
Symfony 8
Tech 636
Tech leadership 21
Telecom / 5G 3
Testing / QA 27
TypeScript 36
UI / UX 22
Vue 18
Web / Frontend 40
Web3 14
WordPress 8
BE Belgium 2
BG Bulgaria 1
FR France 1
DE Germany 5
IT Italy 3
NL Netherlands 7
PL Poland 1
SK Slovakia 1
ES Spain 3
SE Sweden 1
GB United Kingdom 1

Best Open Source conferences 2025 / 2026

Best conference
The Principal Dev – Masterclass for Tech Leads

The Principal Dev – Masterclass for Tech Leads

Certification masterclass for experienced software engineers.

Best conference
Clean Architecture Masterclass

Clean Architecture Masterclass

Certification masterclass for experienced Java developers.

Best conference
Clean Code: The Next Level

Clean Code: The Next Level

Advanced clean code certification training for Java developers.

Best conference
Practical Microservices Masterclass

Practical Microservices Masterclass

Java microservices certification masterclass.

oss

OpenSIPS Summit 2025

Open Source conference in Amsterdam, Netherlands, Europe

oss

T-DOSE 2025

Open Source conference in Geldrop, Netherlands, Europe

oss

Common Europe Congress 2025

Open Source conference in Gothenburg, Sweden, Europe

oss

Community Over Code

Open Source conference in Bratislava, Slovakia, Europe

oss

Capital Series Poland

Open Source conference in Warsaw, Poland, Europe

oss

React Summit 2024

Open Source conference in Amsterdam, Netherlands, Europe

oss

Berlin Buzzwords 2025

Open Source conference in Berlin, Germany, Europe

oss

Open South Code 2025

Open Source conference in Malaga, Spain, Europe

oss

Cloud Native Days Italy 2025

Open Source conference in Bologna, Italy, Europe

oss

Open Source in Finance Forum London

Open Source conference in London, United Kingdom, Europe

oss

KIXCONF 25

Open Source conference in Chemnitz, Germany, Europe

oss

Open edX Conference - 2025

Open Source conference in Paris, France, Europe

oss

The Linux Foundation Europe Roadshow

Open Source conference in Milan, Italy, Europe

oss

FrOSCon 2025

Open Source conference in Sankt Augustin, Germany, Europe

oss

Open Source Summit Europe

Open Source conference in Amsterdam, Netherlands, Europe

oss

Open Source GenAI & ML Summit Europe

Open Source conference in Amsterdam, Netherlands, Europe

oss

OpenSSF Community Day Europe

Open Source conference in Amsterdam, Netherlands, Europe

oss

Open Tech Day 25: Grafana Edition

Open Source conference in Nuremberg, Germany, Europe

oss

Penpot Fest 2025

Open Source conference in Madrid, Spain, Europe

oss

OpenFest 2025

Open Source conference in Sofia, Bulgaria, Europe

oss

The Linux Foundation Europe Member Summit

Open Source conference in Ghent, Belgium, Europe

oss

The Linux Foundation Europe Roadshow

Open Source conference in Ghent, Belgium, Europe

oss

South Tyrol Free Software Conference

Open Source conference in Bolzano, Italy, Europe

oss

Open Source Monitoring Conference

Open Source conference in Nuremberg, Germany, Europe

oss

KubeCon + CloudNativeCon Europe 2026

Open Source conference in Amsterdam, Netherlands, Europe

oss

KubeCon + CloudNativeCon Europe 2027

Open Source conference in Barcelona, Spain, Europe