Stack Overflow

Stack Overflow

Q&A for professional and enthusiast programmers

7.7m questions
13m answers
75% answered
3.3m users
6.2m visits/day
7.4k questions/day
6y site age
Server Fault

Server Fault

Q&A for professional system and network administrators

179k questions
324k answers
81% answered
169k users
290k visits/day
107 questions/day
5y3m site age
Super User

Super User

Q&A for computer enthusiasts and power users

229k questions
368k answers
73% answered
257k users
652k visits/day
183 questions/day
5y site age
Meta Stack Exchange

Meta Stack Exchange

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

67k questions
107k answers
88% answered
112k users
8.4k visits/day
17 questions/day
5y1m site age
Web Applications

Web Applications

Q&A for power users of web applications

15k questions
23k answers
79% answered
48k users
37k visits/day
11 questions/day
4y1m site age
Arqade

Arqade

Q&A for passionate videogamers on all platforms

46k questions
78k answers
93% answered
53k users
223k visits/day
33 questions/day
4y site age
Webmasters

Webmasters

Q&A for pro webmasters

17k questions
30k answers
96% answered
31k users
9.5k visits/day
15 questions/day
4y site age
Seasoned Advice

Seasoned Advice

Q&A for professional and amateur chefs

10k questions
27k answers
99% answered
18k users
60k visits/day
7.0 questions/day
4y site age
Game Development

Game Development

Q&A for professional and independent game developers

21k questions
39k answers
92% answered
39k users
20k visits/day
22 questions/day
4y site age
Photography

Photography

Q&A for professional, enthusiast and amateur photographers

11k questions
31k answers
98% answered
20k users
17k visits/day
7.6 questions/day
4y site age
Cross Validated

Cross Validated

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

40k questions
45k answers
66% answered
38k users
34k visits/day
63 questions/day
4y site age
Mathematics

Mathematics

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

307k questions
455k answers
81% answered
133k users
70k visits/day
376 questions/day
4y site age
Home Improvement

Home Improvement

Q&A for contractors and serious DIYers

12k questions
22k answers
90% answered
16k users
44k visits/day
15 questions/day
4y site age
Geographic Information Systems

Geographic Information Systems

Q&A for cartographers, geographers and GIS professionals

36k questions
48k answers
77% answered
26k users
31k visits/day
49 questions/day
4y site age
TeX - LaTeX

TeX - LaTeX

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

68k questions
95k answers
94% answered
47k users
56k visits/day
65 questions/day
4y site age
Ask Ubuntu

Ask Ubuntu

Q&A for Ubuntu users and developers

163k questions
205k answers
66% answered
213k users
339k visits/day
196 questions/day
4y site age
Personal Finance & Money

Personal Finance & Money

Q&A for people who want to be financially literate

7.7k questions
16k answers
97% answered
12k users
11k visits/day
9.0 questions/day
3y11m site age
English Language & Usage

English Language & Usage

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

40k questions
105k answers
99% answered
61k users
199k visits/day
50 questions/day
3y11m site age
Stack Apps

Stack Apps

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

1.7k questions
2k answers
66% answered
17k users
473 visits/day
0.6 questions/day
4y4m site age
User Experience

User Experience

Q&A for user experience researchers and experts

13k questions
38k answers
98% answered
40k users
13k visits/day
15 questions/day
3y11m site age
Unix & Linux

Unix & Linux

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

45k questions
75k answers
83% answered
65k users
126k visits/day
71 questions/day
3y11m site age
WordPress Development

WordPress Development

Q&A for WordPress developers and administrators

48k questions
62k answers
76% answered
40k users
38k visits/day
49 questions/day
3y11m site age
Theoretical Computer Science

Theoretical Computer Science

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

6k questions
10k answers
78% answered
18k users
1.7k visits/day
5.1 questions/day
3y11m site age
Ask Different

Ask Different

Q&A for power users of Apple hardware and software

42k questions
68k answers
75% answered
63k users
143k visits/day
37 questions/day
3y11m site age
Role-playing Games

Role-playing Games

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

8.4k questions
25k answers
100% answered
9.6k users
11k visits/day
14 questions/day
3y11m site age
Bicycles

Bicycles

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

4.8k questions
14k answers
98% answered
9.8k users
16k visits/day
5.3 questions/day
3y11m site age
Programmers

Programmers

Q&A for professional programmers interested in conceptual questions about software development

32k questions
123k answers
97% answered
116k users
59k visits/day
37 questions/day
3y10m site age
Electrical Engineering

Electrical Engineering

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

31k questions
61k answers
93% answered
33k users
43k visits/day
46 questions/day
3y10m site age
Android Enthusiasts

Android Enthusiasts

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

23k questions
29k answers
68% answered
49k users
80k visits/day
30 questions/day
3y10m site age
Board & Card Games

Board & Card Games

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

4.1k questions
8.8k answers
97% answered
6.4k users
6.8k visits/day
4.6 questions/day
3y9m site age
Physics

Physics

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

37k questions
60k answers
85% answered
37k users
28k visits/day
52 questions/day
3y8m site age
Homebrewing

Homebrewing

Q&A for dedicated home brewers and serious enthusiasts

3.1k questions
7.7k answers
99% answered
4.1k users
4k visits/day
1.9 questions/day
3y8m site age
Information Security

Information Security

Q&A for Information security professionals

15k questions
34k answers
96% answered
42k users
38k visits/day
22 questions/day
3y8m site age
Writers

Writers

Q&A for authors, editors, reviewers, professional writers, and aspiring writers

2.5k questions
7.5k answers
99% answered
7k users
2.9k visits/day
2.1 questions/day
3y8m site age
Video Production

Video Production

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

1.7k questions
2.5k answers
92% answered
5.3k users
1.6k visits/day
2.8 questions/day
3y7m site age
Graphic Design

Graphic Design

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

8.5k questions
17k answers
93% answered
20k users
37k visits/day
15 questions/day
3y6m site age
Database Administrators

Database Administrators

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

24k questions
34k answers
84% answered
35k users
64k visits/day
33 questions/day
3y6m site age
Science Fiction & Fantasy

Science Fiction & Fantasy

Q&A for science fiction and fantasy enthusiasts

15k questions
32k answers
96% answered
23k users
33k visits/day
17 questions/day
3y6m site age
Code Review

Code Review

Q&A for peer programmer code reviews

16k questions
28k answers
95% answered
43k users
23k visits/day
30 questions/day
3y6m site age
Programming Puzzles & Code Golf

Programming Puzzles & Code Golf

Q&A for programming puzzle enthusiasts and code golfers

2.2k questions
21k answers
98% answered
22k users
5k visits/day
5.6 questions/day
3y6m site age
Quantitative Finance

Quantitative Finance

Q&A for finance professionals and academics

3.1k questions
5.1k answers
80% answered
6.5k users
2.7k visits/day
3.4 questions/day
3y6m site age
Project Management

Project Management

Q&A for project managers

2.1k questions
7.6k answers
99% answered
8.7k users
2.5k visits/day
1.3 questions/day
3y5m site age
Skeptics

Skeptics

Q&A for scientific skepticism

4.9k questions
6.4k answers
86% answered
14k users
11k visits/day
4.4 questions/day
3y5m site age
Physical Fitness

Physical Fitness

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

3.9k questions
8.4k answers
97% answered
8.2k users
8.5k visits/day
4.2 questions/day
3y4m site age
Drupal Answers

Drupal Answers

Q&A for Drupal developers and administrators

41k questions
52k answers
70% answered
23k users
26k visits/day
45 questions/day
3y4m site age
Motor Vehicle Maintenance & Repair

Motor Vehicle Maintenance & Repair

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

3.3k questions
5.9k answers
91% answered
4.9k users
13k visits/day
5.1 questions/day
3y4m site age
Parenting

Parenting

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

2.5k questions
8.7k answers
100% answered
6.7k users
11k visits/day
1.5 questions/day
3y4m site age
SharePoint

SharePoint

Q&A for SharePoint enthusiasts

38k questions
50k answers
72% answered
20k users
42k visits/day
48 questions/day
3y3m site age
Musical Practice & Performance

Musical Practice & Performance

Q&A for musicians, students, and enthusiasts

3.9k questions
11k answers
99% answered
8k users
8.6k visits/day
7.9 questions/day
3y3m site age
Software Quality Assurance & Testing

Software Quality Assurance & Testing

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

2.1k questions
5.2k answers
89% answered
6.8k users
4.5k visits/day
2.9 questions/day
3y2m site age
Mi Yodeya

Mi Yodeya

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

11k questions
21k answers
88% answered
3.6k users
2.3k visits/day
16 questions/day
3y2m site age
German Language

German Language

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

3.5k questions
8.6k answers
100% answered
5.6k users
5.1k visits/day
3.5 questions/day
3y2m site age
Japanese Language

Japanese Language

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

4.6k questions
7.9k answers
99% answered
4.4k users
2.6k visits/day
4.6 questions/day
3y2m site age
Philosophy

Philosophy

Q&A for those interested in logical reasoning

2.9k questions
6.9k answers
92% answered
7k users
1.5k visits/day
3.7 questions/day
3y1m site age
Gardening & Landscaping

Gardening & Landscaping

Q&A for gardeners and landscapers

3k questions
5.3k answers
99% answered
3.5k users
5.6k visits/day
3.8 questions/day
3y1m site age
Travel

Travel

Q&A for road warriors and seasoned travelers

7.9k questions
14k answers
98% answered
12k users
22k visits/day
16 questions/day
3y1m site age
Personal Productivity

Personal Productivity

Q&A for people wanting to improve their personal productivity

1.6k questions
6.2k answers
100% answered
8.6k users
848 visits/day
1.0 questions/day
3y1m site age
Cryptography

Cryptography

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

4.6k questions
6.9k answers
92% answered
11k users
2.9k visits/day
6.7 questions/day
3y site age
Signal Processing

Signal Processing

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

4.8k questions
6.6k answers
80% answered
7k users
3.6k visits/day
5.7 questions/day
2y11m site age
French Language

French Language

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

2.2k questions
5.3k answers
99% answered
4.1k users
3.6k visits/day
4.4 questions/day
2y11m site age
Christianity

Christianity

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

5.5k questions
14k answers
99% answered
7.1k users
16k visits/day
9.0 questions/day
2y11m site age
Bitcoin

Bitcoin

Q&A for Bitcoin crypto-currency enthusiasts

7.4k questions
12k answers
86% answered
13k users
4.9k visits/day
7.5 questions/day
2y11m site age
Linguistics

Linguistics

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

2.1k questions
3.5k answers
81% answered
3.6k users
1k visits/day
2.6 questions/day
2y10m site age
Biblical Hermeneutics

Biblical Hermeneutics

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

1.9k questions
3.9k answers
98% answered
2.8k users
4.3k visits/day
2.1 questions/day
2y9m site age
History

History

Q&A for historians and history buffs

3k questions
5.7k answers
94% answered
4.8k users
2.7k visits/day
2.5 questions/day
2y9m site age
LEGO® Answers

LEGO® Answers

Q&A for LEGO® and building block enthusiasts

954 questions
1.8k answers
96% answered
2.6k users
1.5k visits/day
0.9 questions/day
2y9m site age
Spanish Language

Spanish Language

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

1.6k questions
4.1k answers
100% answered
3.1k users
3.8k visits/day
1.4 questions/day
2y8m site age
Computational Science

Computational Science

Q&A for scientists using computers to solve scientific problems

3.1k questions
4.9k answers
84% answered
6.4k users
1.6k visits/day
5.5 questions/day
2y8m site age
Movies & TV

Movies & TV

Q&A for movie and tv enthusiasts

5.3k questions
8.4k answers
94% answered
8.5k users
16k visits/day
7.2 questions/day
2y8m site age
Chinese Language

Chinese Language

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

1.6k questions
4.5k answers
100% answered
3.7k users
948 visits/day
2.6 questions/day
2y7m site age
Biology

Biology

Q&A for biology researchers, academics, and students

5.4k questions
6.9k answers
86% answered
5.7k users
4.6k visits/day
8.9 questions/day
2y7m site age
Poker

Poker

Q&A for serious players and enthusiasts of poker

487 questions
1.3k answers
99% answered
1.5k users
710 visits/day
0.7 questions/day
2y6m site age
Mathematica

Mathematica

Q&A for users of Mathematica

16k questions
27k answers
90% answered
13k users
6.8k visits/day
37 questions/day
2y6m site age
Cognitive Sciences

Cognitive Sciences

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

2k questions
2.6k answers
80% answered
4k users
934 visits/day
2.9 questions/day
2y6m site age
The Great Outdoors

The Great Outdoors

Q&A for people who love outdoor activities, excursions, and outdoorsmanship

1.4k questions
3.2k answers
99% answered
2.5k users
2.9k visits/day
3.2 questions/day
2y6m site age
Martial Arts

Martial Arts

Q&A for students and teachers of all martial arts

596 questions
2.2k answers
98% answered
1.9k users
760 visits/day
1.0 questions/day
2y6m site age
Sports

Sports

Q&A for participants in team and individual sport activities

1.6k questions
2.5k answers
93% answered
2.8k users
3.2k visits/day
3.8 questions/day
2y5m site age
Academia

Academia

Q&A for academics and those enrolled in higher education

5.2k questions
13k answers
98% answered
14k users
9.1k visits/day
13 questions/day
2y5m site age
Computer Science

Computer Science

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

6.8k questions
9.6k answers
89% answered
16k users
2.9k visits/day
11 questions/day
2y4m site age
The Workplace

The Workplace

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

4.5k questions
15k answers
100% answered
17k users
19k visits/day
12 questions/day
2y3m site age
Windows Phone

Windows Phone

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

1.4k questions
1.9k answers
87% answered
4k users
1.9k visits/day
1.7 questions/day
2y3m site age
Chemistry

Chemistry

Q&A for scientists, academics, teachers and students

3.9k questions
5.2k answers
88% answered
4.7k users
3.7k visits/day
10 questions/day
2y3m site age
Chess

Chess

Q&A for serious players and enthusiasts of chess

1.2k questions
2.9k answers
97% answered
3.4k users
1.4k visits/day
2.0 questions/day
2y2m site age
Raspberry Pi

Raspberry Pi

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

4.9k questions
7.4k answers
77% answered
13k users
12k visits/day
11 questions/day
2y1m site age
Russian Language

Russian Language

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

892 questions
2.4k answers
100% answered
2.7k users
521 visits/day
1.6 questions/day
2y1m site age
Islam

Islam

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

2.9k questions
5.1k answers
86% answered
4.1k users
14k visits/day
7.6 questions/day
2y1m site age
Salesforce

Salesforce

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

14k questions
19k answers
84% answered
6.8k users
17k visits/day
36 questions/day
2y site age
Ask Patents

Ask Patents

Q&A for people interested in improving and participating in the patent system

1.3k questions
2.4k answers
70% answered
5.9k users
1.1k visits/day
3.4 questions/day
1y10m site age
Genealogy & Family History

Genealogy & Family History

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

809 questions
1.9k answers
98% answered
1.2k users
512 visits/day
1.2 questions/day
1y9m site age
Robotics

Robotics

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

1k questions
1.8k answers
86% answered
3.7k users
962 visits/day
1.9 questions/day
1y9m site age
ExpressionEngine® Answers

ExpressionEngine® Answers

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

7.8k questions
10k answers
84% answered
3.1k users
1.7k visits/day
11 questions/day
1y8m site age
Politics

Politics

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

1.2k questions
1.9k answers
87% answered
2.1k users
1.1k visits/day
3.3 questions/day
1y7m site age
Anime & Manga

Anime & Manga

Q&A for anime and manga fans

3.2k questions
4.4k answers
88% answered
4.3k users
7.6k visits/day
6.6 questions/day
1y7m site age
Magento

Magento

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

9.5k questions
12k answers
77% answered
7k users
15k visits/day
49 questions/day
1y6m site age
English Language Learners

English Language Learners

Q&A for speakers of other languages learning English

8.4k questions
15k answers
99% answered
7.6k users
13k visits/day
25 questions/day
1y6m site age
Sustainable Living

Sustainable Living

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

551 questions
1.1k answers
97% answered
1.5k users
408 visits/day
0.5 questions/day
1y6m site age
Tridion

Tridion

Q&A for Tridion developers and administrators

2.2k questions
3.8k answers
96% answered
1k users
810 visits/day
4.9 questions/day
1y5m site age
Reverse Engineering

Reverse Engineering

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

1.2k questions
2.1k answers
94% answered
3.9k users
1.7k visits/day
3.5 questions/day
1y4m site age
Network Engineering

Network Engineering

Q&A for network engineers

2.2k questions
3.7k answers
90% answered
5.9k users
6.2k visits/day
5.4 questions/day
1y2m site age
Open Data

Open Data

Q&A for developers and researchers interested in open data

649 questions
1.5k answers
94% answered
3.1k users
425 visits/day
1.6 questions/day
1y2m site age
Freelancing

Freelancing

Q&A for self-employed and freelance workers

482 questions
1.3k answers
98% answered
3.4k users
508 visits/day
1.3 questions/day
1y2m site age
Blender

Blender

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

3.8k questions
5.1k answers
90% answered
4.1k users
5.2k visits/day
12 questions/day
1y2m site age
MathOverflow

MathOverflow

Q&A for professional mathematicians

52k questions
90k answers
80% answered
35k users
15k visits/day
38 questions/day
4y10m site age
Space Exploration

Space Exploration

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

1.5k questions
2.4k answers
95% answered
2.7k users
1.2k visits/day
2.4 questions/day
1y site age
Sound Design

Sound Design

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

5.8k questions
19k answers
94% answered
4.2k users
3.4k visits/day
2.3 questions/day
3y8m site age
Astronomy

Astronomy

Q&A for astronomers and astrophysicists

993 questions
1.5k answers
94% answered
2.1k users
313 visits/day
3.3 questions/day
10m site age
Tor

Tor

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

979 questions
1.2k answers
79% answered
2.1k users
1.8k visits/day
3.9 questions/day
10m site age
Pets

Pets

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

1.2k questions
2k answers
95% answered
1.7k users
2.7k visits/day
3.4 questions/day
9m site age
Amateur Radio

Amateur Radio

Q&A for amateur radio enthusiasts

605 questions
1k answers
99% answered
1.3k users
387 visits/day
0.9 questions/day
9m site age
Italian Language

Italian Language

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

314 questions
670 answers
99% answered
744 users
161 visits/day
0.7 questions/day
8m site age
Stack Overflow em Português

Stack Overflow em Português

Q&A for programadores profissionais e entusiastas

7k questions
12k answers
90% answered
10k users
5k visits/day
38 questions/day
7m site age
Aviation

Aviation

Q&A for aircraft pilots, mechanics, and enthusiasts

1.3k questions
2.7k answers
99% answered
2.9k users
3.2k visits/day
4.0 questions/day
7m site age
Ebooks

Ebooks

Q&A for ebook publishers and readers

390 questions
674 answers
91% answered
1.4k users
480 visits/day
0.3 questions/day
7m site age
Beer

Beer

Q&A for beer aficionados and collectors

285 questions
572 answers
99% answered
1.1k users
198 visits/day
0.6 questions/day
6m site age
Software Recommendations

Software Recommendations

Q&A for people seeking specific software recommendations

2.3k questions
2.5k answers
60% answered
4.6k users
1.4k visits/day
14 questions/day
5m site age
Arduino

Arduino

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

789 questions
1.3k answers
85% answered
2.3k users
1.2k visits/day
4.9 questions/day
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