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

English Language & Usage Stack Exchange

English Language & Usage

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

Meta Stack Exchange

Meta Stack Exchange

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

Ask Different

Ask Different

Q&A for power users of Apple hardware and software

Stack Overflow на русском

Stack Overflow на русском

Вопросы и ответы для программистов



Q&A for passionate videogamers on all platforms

TeX - LaTeX Stack Exchange

TeX - LaTeX

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

Electrical Engineering Stack Exchange

Electrical Engineering

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

Physics Stack Exchange


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

Cross Validated

Cross Validated

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

Software Engineering Stack Exchange

Software Engineering

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

Stack Overflow em Português

Stack Overflow em Português

Perguntas e respostas para programadores profissionais e entusiastas

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

Stack Overflow en español

Stack Overflow en español

Preguntas y respuestas para programadores y profesionales de la informática

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

Science Fiction & Fantasy Stack Exchange

Science Fiction & Fantasy

Q&A for science fiction and fantasy enthusiasts

Salesforce Stack Exchange


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

Graphic Design Stack Exchange

Graphic Design

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

Blender Stack Exchange


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

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

Academia Stack Exchange


Q&A for academics and those enrolled in higher education

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

The Workplace Stack Exchange

The Workplace

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

Raspberry Pi Stack Exchange

Raspberry Pi

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

Chemistry Stack Exchange


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

Travel Stack Exchange


Q&A for road warriors and seasoned travelers

Computer Science Stack Exchange

Computer Science

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

Drupal Answers

Drupal Answers

Q&A for Drupal developers and administrators

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

Data Science Stack Exchange

Data Science

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

Bitcoin Stack Exchange


Q&A for Bitcoin crypto-currency enthusiasts

Photography Stack Exchange


Q&A for professional, enthusiast and amateur photographers

Motor Vehicle Maintenance & Repair Stack Exchange

Motor Vehicle Maintenance & Repair

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

Puzzling Stack Exchange


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

Cryptography Stack Exchange


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

Ethereum Stack Exchange


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

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

Biology Stack Exchange


Q&A for biology researchers, academics, and students

Software Recommendations Stack Exchange

Software Recommendations

Q&A for people seeking specific software recommendations

Signal Processing Stack Exchange

Signal Processing

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

Русский язык

Русский язык

Cайт вопросов и ответов для лингвистов и энтузиастов русского языка

German Language Stack Exchange

German Language

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

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

Islam Stack Exchange


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

Philosophy Stack Exchange


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

Writing Stack Exchange


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

Politics Stack Exchange


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

Christianity Stack Exchange


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

Quantitative Finance Stack Exchange

Quantitative Finance

Q&A for finance professionals and academics

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

History Stack Exchange


Q&A for historians and history buffs

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

Biblical Hermeneutics Stack Exchange

Biblical Hermeneutics

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

Stack Apps

Stack Apps

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

Theoretical Computer Science Stack Exchange

Theoretical Computer Science

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

Space Exploration Stack Exchange

Space Exploration

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

French Language Stack Exchange

French Language

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

Parenting Stack Exchange


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

Vi and Vim Stack Exchange

Vi and Vim

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

Emacs Stack Exchange


Q&A for those using, extending or developing Emacs

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

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

Astronomy Stack Exchange


Q&A for astronomers and astrophysicists

Lifehacks Stack Exchange


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

Engineering Stack Exchange


Q&A for professionals and students of engineering

Chess Stack Exchange


Q&A for serious players and enthusiasts of chess

Physical Fitness Stack Exchange

Physical Fitness

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

Pets Stack Exchange


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

Video Production Stack Exchange

Video Production

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

Sound Design Stack Exchange

Sound Design

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

Computational Science Stack Exchange

Computational Science

Q&A for scientists using computers to solve scientific problems

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

Interpersonal Skills Stack Exchange

Interpersonal Skills

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

Chinese Language Stack Exchange

Chinese Language

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

Economics Stack Exchange


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

Linguistics Stack Exchange


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

DevOps Stack Exchange


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

Psychology & Neuroscience Stack Exchange

Psychology & Neuroscience

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

elementary OS Stack Exchange

elementary OS

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

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

Robotics Stack Exchange


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

Buddhism Stack Exchange


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

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

Homebrewing Stack Exchange


Q&A for dedicated home brewers and serious enthusiasts

Retrocomputing Stack Exchange


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

Open Source Stack Exchange

Open Source

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

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

Freelancing Stack Exchange


Q&A for self-employed and freelance workers

CiviCRM Stack Exchange


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

Windows Phone Stack Exchange

Windows Phone

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

Expatriates Stack Exchange


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

Woodworking Stack Exchange


Q&A for professional and amateur woodworkers

Sitecore Stack Exchange


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

Ask Patents

Ask Patents

Q&A for people interested in improving the patent system

ExpressionEngine® Answers

ExpressionEngine® Answers

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

Russian Language Stack Exchange

Russian Language

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



Q&A for LEGO® and building block enthusiasts

Joomla Stack Exchange


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

Mathematics Educators Stack Exchange

Mathematics Educators

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

Quantum Computing Stack Exchange

Quantum Computing

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

Literature Stack Exchange


Q&A for scholars and enthusiasts of literature

Music Fans Stack Exchange

Music Fans

Q&A for music historians, critics, and fans

Hardware Recommendations Stack Exchange

Hardware Recommendations

Q&A for people seeking specific hardware recommendations

Computer Graphics Stack Exchange

Computer Graphics

Q&A for computer graphics researchers and programmers

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

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

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

Portuguese Language Stack Exchange

Portuguese Language

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

Monero Stack Exchange


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

Bioinformatics Stack Exchange


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

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

Latin Language Stack Exchange

Latin Language

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

Coffee Stack Exchange


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

Tridion Stack Exchange


Q&A for Tridion developers and administrators

Poker Stack Exchange


Q&A for serious players and enthusiasts of poker

Sustainable Living Stack Exchange

Sustainable Living

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

Computer Science Educators Stack Exchange

Computer Science Educators

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

Mythology & Folklore Stack Exchange

Mythology & Folklore

Q&A for enthusiasts and scholars of mythology and folklore

Beer, Wine & Spirits Stack Exchange

Beer, Wine & Spirits

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

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

Korean Language Stack Exchange

Korean Language

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

Operations Research Stack Exchange

Operations Research

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

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

Veganism & Vegetarianism Stack Exchange

Veganism & Vegetarianism

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

Iota Stack Exchange


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

Matter Modeling Stack Exchange

Matter Modeling

Q&A for materials modelers and data scientists

Constructed Languages Stack Exchange

Constructed Languages

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

Drones and Model Aircraft Stack Exchange

Drones and Model Aircraft

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