For most major programming languages and significant frameworks, an established annual conference (or family of regional conferences) serves as the gathering point for the community. These are critical venues for DevRel teams whose product is adopted by communities organised around specific languages or frameworks.
JavaScript / TypeScript / Frontend
Conference
First held
Operator
Location
Notes
JSConf
2009
Community / various local organisers
Multiple regional editions (US, EU, Asia, AU)
Founded by Chris and Laura Williams; influential model
NodeConf
2011
Community / Node Foundation / OpenJS Foundation
Various
Node.js focus
React Conf
2015
Meta
California (then virtual)
Official React event
React Summit
2016 (as React Amsterdam)
GitNation
Amsterdam + Remote + NYC
Renamed React Summit in 2020
Reactathon
2017
Real World React / GitHub-adjacent
San Francisco
Smaller but technically deep
Next.js Conf
2020
Vercel
Virtual / hybrid
Annual
JSNation
2019
GitNation
Amsterdam
Sister of React Summit
JSConf EU / JSConf US / JSConf Asia
2009+
Community
Berlin / Florida / Singapore (historic)
Influential community conferences
Nordic.js
2014
Community
Stockholm
Two-day Nordic JS community
dotJS
2012
dotConferences (Sylvain Zimmer)
Paris
Single-track, single-day
CSSConf
2013
Community
Various
CSS-specific
TheJam.dev
2021
CFE.dev / virtual
Online
Free, modern web focus
Frontend Masters Workshops
(training, not conference)
Frontend Masters
Online / Minneapolis
Workshop format
React Paris
2024
Community
Paris
Hybrid
React Universe Conf
2017 (as React Native EU)
Callstack
Wrocław, Poland
Renamed in 2024
React Nexus
2023
Community
Bangalore
Annual
Vue.js Live / VueConf US / VueConf TO
2018+
Community
London / Florida / Toronto
Vue ecosystem
SvelteSummit
2020
Svelte Society
Virtual / Stockholm
Svelte community
AstroDay
2023
Astro
Online
Astro framework
Jamstack Conf
2018
Netlify
SF / London / virtual
Jamstack movement
Python
Conference
First held
Operator
Location
Notes
PyCon US
2003
Python Software Foundation
Rotating US cities (Long Beach 2026/27)
Largest Python event
EuroPython
2002
EuroPython Society
Rotating EU cities
European flagship
PyCon JP
2011
PyCon JP Association
Tokyo
Japanese Python community
PyCon India
2009
Python India
Rotating Indian cities
Substantial Indian Python community
PyData
2012
NumFOCUS
Multiple regional editions
Data-focused Python
SciPy
2002
NumFOCUS / scientific Python
Austin
Scientific computing
DjangoCon US / Europe
2008+
Django community
Rotating
Django framework
PyTexas, PyOhio, PyGotham, PyCascades
Various
Regional volunteers
US regions
Regional editions
Java / JVM
Conference
First held
Operator
Location
Notes
JavaOne
1996
Sun → Oracle
San Francisco
Discontinued 2017, revived 2022
Devoxx (Belgium)
2001 (as JavaPolis)
Belgian Java User Group
Antwerp (Kinepolis cinema venue)
One of the largest
Devoxx France
2012
Paris JUG
Paris
French edition
Devoxx UK
2013
London JUG
London
UK edition
Devoxx Poland
2014
Polish JUG
Kraków
Polish edition
Devoxx Greece, Morocco, etc.
2010s+
Local JUGs
Various
Sister conferences
JFokus
2007
Sweden JUG
Stockholm
Nordic Java
JCrete
2011
Heinz Kabutz / community
Crete
Unconference
Spring I/O
2010
Community
Spain
Spring Framework / Spring Boot
Voxxed Days
2010s
Devoxx-affiliated
Multiple regional
Smaller editions
Kotlin
KotlinConf. Organised by JetBrains. The first event was in San Francisco in 2017, followed by Amsterdam in 2018 and Copenhagen in 2019. Later editions included Amsterdam in 2023, Copenhagen in 2024 and 2025, and Munich in 2026.
Go
GopherCon (US): Annual since 2014; rotates US cities. The defining Go community event.
GopherCon EU. European edition.
GoLab. Florence, Italy.
GopherCon UK. London.
dotGo. Paris (dotConferences family).
Go Devroom at FOSDEM. Brussels.
Rust
RustConf. Annual since 2016. The Rust Foundation first hosted it in 2024.
Rust Belt Rust. Regional US.
RustFest. European community editions.
Rust Nation UK. London.
Rust Asia. Singapore.
Oxidize. Berlin, embedded Rust focus.
Ruby
RubyConf. Annual since 2001; primary US Ruby event.
RailsConf. Annual since 2006; primary Rails event.
RubyKaigi. Japan; founded 2006; particularly significant as Ruby originates from Japan.
EuRuKo. Travelling European Ruby community conference, first held in 2003.
Rails World. 2023+, organised by 37signals / Rails Foundation. Amsterdam, Toronto, etc.
PHP
php[tek]. Long-running US PHP event.
SymfonyCon / SymfonyLive. Symfony framework.
Laracon (Online, US, EU, AU). Laravel framework.
Sunshine PHP. Florida.
PHP UK Conference. London.
C / C++
CppCon. Annual since 2014; the largest C++ event.
C++Now. Aspen, CO; smaller, technically deep.
ACCU. Bristol, UK; long-running.
Meeting C++. Berlin.
.NET / C#
.NET Conf. Annual virtual event from Microsoft.
NDC (Norwegian Developers Conference). Started in Oslo 2008; expanded to London, Copenhagen, Sydney, Porto, Minnesota, Melbourne. Despite the name, broadly .NET- and software-craftsmanship-focused.
Language and framework conferences give a product team access to people already working in the relevant ecosystem. Before sponsoring one, check the attendee mix, programme, code of conduct, previous sponsors, and whether the package includes a genuine technical contribution or only logo placement.