Choose a site and time interval below to see top users by week, month, quarter, or year
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Stack Overflow

Stack Overflow

Q&A for professional and enthusiast programmers

Mathematics Stack Exchange


Q&A for people studying math at any level and professionals in related fields

Super User

Super User

Q&A for computer enthusiasts and power users

Server Fault

Server Fault

Q&A for system and network administrators

Unix & Linux Stack Exchange

Unix & Linux

Q&A for users of Linux, FreeBSD and other Un*x-like operating systems

Meta Stack Exchange

Meta Stack Exchange

Q&A for meta-discussion of the Stack Exchange family of Q&A websites

English Language & Usage Stack Exchange

English Language & Usage

Q&A for linguists, etymologists, and serious English language enthusiasts

Stack Overflow на русском

Stack Overflow на русском

Вопросы и ответы для программистов

Ask Different

Ask Different

Q&A for power users of Apple hardware and software

TeX - LaTeX Stack Exchange

TeX - LaTeX

Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems

Cross Validated

Cross Validated

Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization

Physics Stack Exchange


Q&A for active researchers, academics and students of physics

Electrical Engineering Stack Exchange

Electrical Engineering

Q&A for electronics and electrical engineering professionals, students, and enthusiasts

Software Engineering Stack Exchange

Software Engineering

Q&A for professionals, academics, and students working within the systems development life cycle



Q&A for passionate videogamers on all platforms

Stack Overflow em Português

Stack Overflow em Português

Perguntas e respostas para programadores profissionais e entusiastas

Stack Overflow en español

Stack Overflow en español

Preguntas y respuestas para programadores y profesionales de la informática

Database Administrators Stack Exchange

Database Administrators

Q&A for database professionals who wish to improve their database skills and learn from others in the community

English Language Learners Stack Exchange

English Language Learners

Q&A for speakers of other languages learning English

Android Enthusiasts Stack Exchange

Android Enthusiasts

Q&A for enthusiasts and power users of the Android operating system

Geographic Information Systems Stack Exchange

Geographic Information Systems

Q&A for cartographers, geographers and GIS professionals

WordPress Development Stack Exchange

WordPress Development

Q&A for WordPress developers and administrators

Salesforce Stack Exchange


Q&A for Salesforce administrators, implementation experts, developers and anybody in-between

Science Fiction & Fantasy Stack Exchange

Science Fiction & Fantasy

Q&A for science fiction and fantasy enthusiasts

Blender Stack Exchange


Q&A for people who use Blender to create 3D graphics, animations, or games

Graphic Design Stack Exchange

Graphic Design

Q&A for Graphic Design professionals, students, and enthusiasts

Academia Stack Exchange


Q&A for academics and those enrolled in higher education

Game Development Stack Exchange

Game Development

Q&A for professional and independent game developers

Magento Stack Exchange


Q&A for users of the Magento e-Commerce platform

Role-playing Games Stack Exchange

Role-playing Games

Q&A for gamemasters and players of tabletop, paper-and-pencil role-playing games

User Experience Stack Exchange

User Experience

Q&A for user experience researchers and experts

Chemistry Stack Exchange


Q&A for scientists, academics, teachers, and students in the field of chemistry

The Workplace Stack Exchange

The Workplace

Q&A for members of the workforce navigating the professional setting

Computer Science Stack Exchange

Computer Science

Q&A for students, researchers and practitioners of computer science

Raspberry Pi Stack Exchange

Raspberry Pi

Q&A for users and developers of hardware and software for Raspberry Pi

Travel Stack Exchange


Q&A for road warriors and seasoned travelers

Drupal Answers

Drupal Answers

Q&A for Drupal developers and administrators

Data Science Stack Exchange

Data Science

Q&A for Data science professionals, Machine Learning specialists, and those interested in learning more about the field

Personal Finance & Money Stack Exchange

Personal Finance & Money

Q&A for people who want to be financially literate

Worldbuilding Stack Exchange


Q&A for writers/artists using science, geography and culture to construct imaginary worlds and settings

Code Golf Stack Exchange

Code Golf

Q&A for programming puzzle enthusiasts and code golfers

Bitcoin Stack Exchange


Q&A for Bitcoin crypto-currency enthusiasts

Photography Stack Exchange


Q&A for professional, enthusiast and amateur photographers

Ethereum Stack Exchange


Q&A for users of Ethereum, the decentralized application platform and smart contract enabled blockchain

Motor Vehicle Maintenance & Repair Stack Exchange

Motor Vehicle Maintenance & Repair

Q&A for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles

Cryptography Stack Exchange


Q&A for software developers, mathematicians and others interested in cryptography

Puzzling Stack Exchange


Q&A for those who create, solve, and study puzzles

Arduino Stack Exchange


Q&A for developers of open-source hardware and software that is compatible with Arduino

Bicycles Stack Exchange


Q&A for people who build and repair bicycles, people who train cycling, or commute on bicycles

Aviation Stack Exchange


Q&A for aircraft pilots, mechanics, and enthusiasts

Islam Stack Exchange


Q&A for Muslims, experts in Islam, and those interested in learning more about Islam

Biology Stack Exchange


Q&A for biology researchers, academics, and students

Signal Processing Stack Exchange

Signal Processing

Q&A for practitioners of the art and science of signal, image and video processing

Software Recommendations Stack Exchange

Software Recommendations

Q&A for people seeking specific software recommendations

Русский язык

Русский язык

Cайт вопросов и ответов для лингвистов и энтузиастов русского языка

Japanese Language Stack Exchange

Japanese Language

Q&A for students, teachers, and linguists wanting to discuss the finer points of the Japanese language

Software Quality Assurance & Testing Stack Exchange

Software Quality Assurance & Testing

Q&A for software quality control experts, automation engineers, and software testers

German Language Stack Exchange

German Language

Q&A for speakers of German wanting to discuss the finer points of the language and translation




Philosophy Stack Exchange


Q&A for those interested in the study of the fundamental nature of knowledge, reality, and existence

Quantitative Finance Stack Exchange

Quantitative Finance

Q&A for finance professionals and academics

Writing Stack Exchange


Q&A for the craft of professional writing, including fiction, non-fiction, technical, scholarly, and commercial writing

Mi Yodeya

Mi Yodeya

Q&A for those who base their lives on Jewish law and tradition and anyone interested in learning more

Law Stack Exchange


Q&A for legal professionals, students, and others with experience or interest in law

Christianity Stack Exchange


Q&A for committed Christians, experts in Christianity and those interested in learning more

History Stack Exchange


Q&A for historians and history buffs

Biblical Hermeneutics Stack Exchange

Biblical Hermeneutics

Q&A for professors, theologians, and those interested in exegetical analysis of biblical texts

Space Exploration Stack Exchange

Space Exploration

Q&A for spacecraft operators, scientists, engineers, and enthusiasts

Stack Apps

Stack Apps

Q&A for apps, scripts, and development with the Stack Exchange API

Board & Card Games Stack Exchange

Board & Card Games

Q&A for people who like playing board games, designing board games or modifying the rules of existing board games

Politics Stack Exchange


Q&A for people interested in governments, policies, and political processes

Theoretical Computer Science Stack Exchange

Theoretical Computer Science

Q&A for theoretical computer scientists and researchers in related fields

French Language Stack Exchange

French Language

Q&A for students, teachers, and linguists wanting to discuss the finer points of the French language

Vi and Vim Stack Exchange

Vi and Vim

Q&A for people using the vi and Vim families of text editors

Artificial Intelligence Stack Exchange

Artificial Intelligence

Q&A for people interested in conceptual questions about life and challenges in a world where "cognitive" functions can be mimicked in purely digital environment

Emacs Stack Exchange


Q&A for those using, extending or developing Emacs

Spanish Language Stack Exchange

Spanish Language

Q&A for linguists, teachers, students and Spanish language enthusiasts in general wanting to discuss the finer points of the language

Parenting Stack Exchange


Q&A for parents, grandparents, nannies and others with a parenting role

Astronomy Stack Exchange


Q&A for astronomers and astrophysicists

Engineering Stack Exchange


Q&A for professionals and students of engineering

Physical Fitness Stack Exchange

Physical Fitness

Q&A for physical fitness professionals, athletes, trainers, and those providing health-related needs

Computational Science Stack Exchange

Computational Science

Q&A for scientists using computers to solve scientific problems

Video Production Stack Exchange

Video Production

Q&A for engineers, producers, editors and enthusiasts spanning the fields of video and media creation

Reverse Engineering Stack Exchange

Reverse Engineering

Q&A for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation

Hinduism Stack Exchange


Q&A for followers of the Hindu religion and those interested in learning more about Hinduism

Lifehacks Stack Exchange


Q&A for people looking to bypass life's everyday problems with simple tricks

Economics Stack Exchange


Q&A for those who study, teach, research and apply economics and econometrics

Chess Stack Exchange


Q&A for serious players and enthusiasts of chess

Chinese Language Stack Exchange

Chinese Language

Q&A for students, teachers, and linguists wanting to discuss the finer points of the Chinese language

Sound Design Stack Exchange

Sound Design

Q&A for sound engineers, producers, editors, and enthusiasts

Pets Stack Exchange


Q&A for pet owners, caretakers, breeders, veterinarians, and trainers

Interpersonal Skills Stack Exchange

Interpersonal Skills

Q&A for people looking to improve their interpersonal communication skills

DevOps Stack Exchange


Q&A for software engineers working on automated testing, continuous delivery, service integration and monitoring, and building SDLC infrastructure

Linguistics Stack Exchange


Q&A for professional linguists and others with an interest in linguistic research and theory

Psychology & Neuroscience Stack Exchange

Psychology & Neuroscience

Q&A for practitioners, researchers, and students in cognitive science, psychology, neuroscience, and psychiatry

Robotics Stack Exchange


Q&A for professional robotic engineers, hobbyists, researchers and students

elementary OS Stack Exchange

elementary OS

Q&A for developers and users of elementary OS and applications

Buddhism Stack Exchange


Q&A for people practicing or interested in Buddhist philosophy, teaching, and practice

The Great Outdoors Stack Exchange

The Great Outdoors

Q&A for people who love being outdoors enjoying nature and wilderness, and learning about the required skills and equipment

Tor Stack Exchange


Q&A for researchers, developers, and users of Tor

Open Data Stack Exchange

Open Data

Q&A for developers and researchers interested in open data

Sports Stack Exchange


Q&A for participants in team and individual sport activities

Craft CMS Stack Exchange

Craft CMS

Q&A for administrators, end users, developers and designers for Craft CMS

Open Source Stack Exchange

Open Source

Q&A for people organizing, marketing or licensing open source development projects

Retrocomputing Stack Exchange


Q&A for vintage-computer hobbyists interested in restoring, preserving, and using the classic computer and gaming systems of yesteryear

Medical Sciences Stack Exchange

Medical Sciences

Q&A for professionals in medical and allied health fields, students of those professions, related academics, and others with a sound understanding of medicine and healthcare-related sciences

Earth Science Stack Exchange

Earth Science

Q&A for those interested in the geology, meteorology, oceanography, and environmental sciences

Homebrewing Stack Exchange


Q&A for dedicated home brewers and serious enthusiasts

CiviCRM Stack Exchange


Q&A for administrators and users of the CiviCRM Constituent Relationship Management software

Freelancing Stack Exchange


Q&A for self-employed and freelance workers

Sitecore Stack Exchange


Q&A for developers and end users of the Sitecore CMS and multichannel marketing software

Expatriates Stack Exchange


Q&A for people living abroad on a long-term basis

Ask Patents

Ask Patents

Q&A for people interested in improving the patent system

Windows Phone Stack Exchange

Windows Phone

Q&A for enthusiasts and power users of Windows Phone OS

Russian Language Stack Exchange

Russian Language

Q&A for students, teachers, and linguists wanting to discuss the finer points of the Russian language

ExpressionEngine® Answers

ExpressionEngine® Answers

Q&A for administrators, end users, developers and designers for ExpressionEngine® CMS



Q&A for LEGO® and building block enthusiasts

Woodworking Stack Exchange


Q&A for professional and amateur woodworkers

Quantum Computing Stack Exchange

Quantum Computing

Q&A for engineers, scientists, programmers, and computing professionals interested in quantum computing

Mathematics Educators Stack Exchange

Mathematics Educators

Q&A for those involved in the field of teaching mathematics

Joomla Stack Exchange


Q&A for Joomla! administrators, users, developers and designers

Literature Stack Exchange


Q&A for scholars and enthusiasts of literature

Portuguese Language Stack Exchange

Portuguese Language

Q&A for linguists, teachers and learners wanting to discuss the finer points of the Portuguese language

Computer Graphics Stack Exchange

Computer Graphics

Q&A for computer graphics researchers and programmers

Hardware Recommendations Stack Exchange

Hardware Recommendations

Q&A for people seeking specific hardware recommendations

Music Fans Stack Exchange

Music Fans

Q&A for music historians, critics, and fans

Monero Stack Exchange


Q&A for developers and users of the secure, private and untraceable cryptocurrency Monero

History of Science and Mathematics Stack Exchange

History of Science and Mathematics

Q&A for people interested in the history and origins of science and mathematics

Internet of Things Stack Exchange

Internet of Things

Q&A for builders and users of networked sensors and control devices in the contexts of smart homes, industry automation, or environmental sensors

Bioinformatics Stack Exchange


Q&A for researchers, developers, students, teachers, and end users interested in bioinformatics

Italian Language Stack Exchange

Italian Language

Q&A for students, teachers, and linguists wanting to discuss the finer points of the Italian language

Ebooks Stack Exchange


Q&A for ebook publishers and readers

Latin Language Stack Exchange

Latin Language

Q&A for linguists, teachers, and students wanting to discuss the finer points of the Latin language

Genealogy & Family History Stack Exchange

Genealogy & Family History

Q&A for expert genealogists and people interested in genealogy or family history

Martial Arts Stack Exchange

Martial Arts

Q&A for students and teachers of all martial arts

Tridion Stack Exchange


Q&A for Tridion developers and administrators

Coffee Stack Exchange


Q&A for people interested in all aspects of producing and consuming coffee

Poker Stack Exchange


Q&A for serious players and enthusiasts of poker

Computer Science Educators Stack Exchange

Computer Science Educators

Q&A for those involved in the field of teaching Computer Science

Sustainable Living Stack Exchange

Sustainable Living

Q&A for folks dedicated to a lifestyle that can be maintained indefinitely without depleting available resources

Beer, Wine & Spirits Stack Exchange

Beer, Wine & Spirits

Q&A for alcoholic beverage aficionados and those interested in beer, wine, or spirits

Mythology & Folklore Stack Exchange

Mythology & Folklore

Q&A for enthusiasts and scholars of mythology and folklore

Ukrainian Language Stack Exchange

Ukrainian Language

Q&A for linguists, teachers and students of the Ukrainian language

Language Learning Stack Exchange

Language Learning

Q&A for students, teachers, polyglots, and anyone interested in the techniques of second-language acquisition

EOS.IO Stack Exchange


Q&A for users and developers of distributed applications built on top of the blockchain operating system, EOS.IO

Operations Research Stack Exchange

Operations Research

Q&A for operations research and analytics professionals, educators, and students

Korean Language Stack Exchange

Korean Language

Q&A for linguists, teachers and students of the Korean language

Tezos Stack Exchange


Q&A for users, experts, and developers of the Tezos blockchain project

Community Building Stack Exchange

Community Building

Q&A for community managers, administrators, and moderators

Stellar Stack Exchange


Q&A for developers and users of Stellar and the Stellar Distributed Exchange

Esperanto Language Stack Exchange

Esperanto Language

Q&A for teachers and students of the Esperanto language

Matter Modeling Stack Exchange

Matter Modeling

Q&A for materials modelers and data scientists

Iota Stack Exchange


Q&A for users of Iota, the open-source cryptocurrency for IoT that does not use a blockchain

Veganism & Vegetarianism Stack Exchange

Veganism & Vegetarianism

Q&A for those committed to a vegan or vegetarian lifestyle and anyone interested in learning more

Drones and Model Aircraft Stack Exchange

Drones and Model Aircraft

Q&A for experienced flyers, pilots, and builders of drones and model aircraft

Constructed Languages Stack Exchange

Constructed Languages

Q&A for designers and users of artificial or invented languages, consciously developed instead of having developed naturally