
Stack Overflow

Stack Overflow

Q&A for professional and enthusiast programmers

11m questions
18m answers
73% answered
5.2m users
8.2m visits/day
8.2k questions/day
7y7m site age
Server Fault

Server Fault

Q&A for system and network administrators

215k questions
373k answers
81% answered
248k users
372k visits/day
107 questions/day
6y10m site age
Super User

Super User

Q&A for computer enthusiasts and power users

301k questions
457k answers
69% answered
404k users
840k visits/day
187 questions/day
6y7m site age
Meta Stack Exchange

Meta Stack Exchange

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

77k questions
118k answers
88% answered
143k users
8.8k visits/day
17 questions/day
6y8m site age
Web Applications

Web Applications

Q&A for power users of web applications

19k questions
28k answers
85% answered
67k users
50k visits/day
12 questions/day
5y8m site age
Arqade

Arqade

Q&A for passionate videogamers on all platforms

64k questions
107k answers
92% answered
80k users
262k visits/day
40 questions/day
5y7m site age
Webmasters

Webmasters

Q&A for pro webmasters

23k questions
38k answers
94% answered
44k users
14k visits/day
14 questions/day
5y7m site age
Seasoned Advice

Seasoned Advice

Q&A for professional and amateur chefs

14k questions
36k answers
97% answered
28k users
99k visits/day
8.9 questions/day
5y7m site age
Game Development

Game Development

Q&A for professional and independent game developers

31k questions
51k answers
89% answered
59k users
26k visits/day
22 questions/day
5y7m site age
Photography

Photography

Q&A for professional, enthusiast and amateur photographers

15k questions
39k answers
97% answered
30k users
26k visits/day
8.1 questions/day
5y7m site age
Cross Validated

Cross Validated

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

73k questions
73k answers
61% answered
75k users
71k visits/day
88 questions/day
5y7m site age
Mathematics

Mathematics

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

560k questions
806k answers
79% answered
235k users
173k visits/day
575 questions/day
5y7m site age
Home Improvement

Home Improvement

Q&A for contractors and serious DIYers

22k questions
38k answers
86% answered
30k users
84k visits/day
24 questions/day
5y7m site age
Geographic Information Systems

Geographic Information Systems

Q&A for cartographers, geographers and GIS professionals

63k questions
76k answers
73% answered
47k users
50k visits/day
60 questions/day
5y7m site age
TeX - LaTeX

TeX - LaTeX

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

106k questions
140k answers
93% answered
76k users
90k visits/day
79 questions/day
5y7m site age
Ask Ubuntu

Ask Ubuntu

Q&A for Ubuntu users and developers

215k questions
284k answers
66% answered
319k users
513k visits/day
198 questions/day
5y7m site age
Personal Finance & Money

Personal Finance & Money

Q&A for people who want to be financially literate

13k questions
26k answers
95% answered
24k users
27k visits/day
14 questions/day
5y6m site age
English Language & Usage

English Language & Usage

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

66k questions
167k answers
96% answered
109k users
329k visits/day
60 questions/day
5y6m site age
Stack Apps

Stack Apps

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

2.1k questions
2.2k answers
64% answered
23k users
622 visits/day
0.4 questions/day
5y11m site age
User Experience

User Experience

Q&A for user experience researchers and experts

19k questions
53k answers
97% answered
58k users
17k visits/day
12 questions/day
5y6m site age
Unix & Linux

Unix & Linux

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

84k questions
129k answers
77% answered
131k users
245k visits/day
92 questions/day
5y6m site age
WordPress Development

WordPress Development

Q&A for WordPress developers and administrators

65k questions
81k answers
71% answered
62k users
42k visits/day
52 questions/day
5y6m site age
Theoretical Computer Science

Theoretical Computer Science

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

7.7k questions
12k answers
77% answered
24k users
1.8k visits/day
4.2 questions/day
5y6m site age
Ask Different

Ask Different

Q&A for power users of Apple hardware and software

68k questions
101k answers
68% answered
119k users
261k visits/day
52 questions/day
5y6m site age
Role-playing Games

Role-playing Games

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

15k questions
40k answers
100% answered
17k users
20k visits/day
14 questions/day
5y6m site age
Bicycles

Bicycles

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

7.4k questions
20k answers
98% answered
16k users
15k visits/day
5.6 questions/day
5y6m site age
Programmers

Programmers

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

38k questions
127k answers
96% answered
173k users
79k visits/day
27 questions/day
5y5m site age
Electrical Engineering

Electrical Engineering

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

56k questions
104k answers
95% answered
65k users
83k visits/day
72 questions/day
5y5m site age
Android Enthusiasts

Android Enthusiasts

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

37k questions
43k answers
60% answered
97k users
147k visits/day
41 questions/day
5y5m 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

6.4k questions
13k answers
98% answered
11k users
11k visits/day
4.8 questions/day
5y4m site age
Physics

Physics

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

70k questions
105k answers
82% answered
69k users
79k visits/day
87 questions/day
5y3m site age
Homebrewing

Homebrewing

Q&A for dedicated home brewers and serious enthusiasts

4.2k questions
9.8k answers
99% answered
6k users
5.3k visits/day
1.6 questions/day
5y3m site age
Information Security

Information Security

Q&A for information security professionals

27k questions
55k answers
94% answered
76k users
60k visits/day
34 questions/day
5y3m site age
Writers

Writers

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

3.9k questions
11k answers
99% answered
12k users
6.5k visits/day
3.6 questions/day
5y3m site age
Video Production

Video Production

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

3.4k questions
4.6k answers
84% answered
8.5k users
4.1k visits/day
3.9 questions/day
5y2m site age
Graphic Design

Graphic Design

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

16k questions
29k answers
90% answered
42k users
68k visits/day
19 questions/day
5y1m 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

42k questions
55k answers
80% answered
69k users
101k visits/day
40 questions/day
5y1m site age
Science Fiction & Fantasy

Science Fiction & Fantasy

Q&A for science fiction and fantasy enthusiasts

29k questions
58k answers
94% answered
42k users
66k visits/day
34 questions/day
5y1m site age
Code Review

Code Review

Q&A for peer programmer code reviews

31k questions
54k answers
94% answered
81k users
47k visits/day
38 questions/day
5y1m site age
Programming Puzzles & Code Golf

Programming Puzzles & Code Golf

Q&A for programming puzzle enthusiasts and code golfers

4.9k questions
47k answers
98% answered
36k users
5.1k visits/day
8.7 questions/day
5y1m site age
Quantitative Finance

Quantitative Finance

Q&A for finance professionals and academics

6k questions
8.8k answers
79% answered
11k users
4.7k visits/day
8.3 questions/day
5y1m site age
Project Management

Project Management

Q&A for project managers

3k questions
10k answers
98% answered
13k users
4.8k visits/day
2.9 questions/day
5y site age
Skeptics

Skeptics

Q&A for scientific skepticism

6.3k questions
8k answers
86% answered
20k users
14k visits/day
4.4 questions/day
5y site age
Physical Fitness

Physical Fitness

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

5.7k questions
12k answers
97% answered
13k users
12k visits/day
2.0 questions/day
4y11m site age
Drupal Answers

Drupal Answers

Q&A for Drupal developers and administrators

58k questions
75k answers
69% answered
34k users
24k visits/day
48 questions/day
4y11m site age
Motor Vehicle Maintenance & Repair

Motor Vehicle Maintenance & Repair

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

7.2k questions
12k answers
95% answered
11k users
34k visits/day
14 questions/day
4y11m site age
Parenting

Parenting

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

3.9k questions
13k answers
99% answered
13k users
19k visits/day
1.7 questions/day
4y11m site age
SharePoint

SharePoint

Q&A for SharePoint enthusiasts

59k questions
73k answers
66% answered
32k users
55k visits/day
47 questions/day
4y10m site age
Music: Practice & Theory

Music: Practice & Theory

Q&A for musicians, students, and enthusiasts

7.3k questions
20k answers
98% answered
16k users
18k visits/day
6.9 questions/day
4y10m site age
Software Quality Assurance & Testing

Software Quality Assurance & Testing

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

3.8k questions
8.9k answers
88% answered
12k users
8.3k visits/day
5.2 questions/day
4y9m 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

18k questions
30k answers
86% answered
5.7k users
3.2k visits/day
11 questions/day
4y9m site age
German Language

German Language

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

6.1k questions
15k answers
100% answered
11k users
9.6k visits/day
5.9 questions/day
4y9m site age
Japanese Language

Japanese Language

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

8.3k questions
13k answers
99% answered
8.3k users
4.7k visits/day
8.3 questions/day
4y9m site age
Philosophy

Philosophy

Q&A for those interested in logical reasoning

5.7k questions
14k answers
94% answered
13k users
3.2k visits/day
5.1 questions/day
4y8m site age
Gardening & Landscaping

Gardening & Landscaping

Q&A for gardeners and landscapers

4.9k questions
8.4k answers
98% answered
5.9k users
4.1k visits/day
3.4 questions/day
4y8m site age
Travel

Travel

Q&A for road warriors and seasoned travelers

16k questions
27k answers
99% answered
26k users
30k visits/day
18 questions/day
4y8m site age
Personal Productivity

Personal Productivity

Q&A for people wanting to improve their personal productivity

2k questions
7.6k answers
99% answered
12k users
1.6k visits/day
0.8 questions/day
4y8m site age
Cryptography

Cryptography

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

8.6k questions
12k answers
89% answered
21k users
5.9k visits/day
11 questions/day
4y7m site age
Signal Processing

Signal Processing

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

8.7k questions
11k answers
75% answered
13k users
6.1k visits/day
9.8 questions/day
4y6m site age
French Language

French Language

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

3.6k questions
8.6k answers
100% answered
7.6k users
7.6k visits/day
4.2 questions/day
4y6m site age
Christianity

Christianity

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

7.8k questions
19k answers
99% answered
12k users
20k visits/day
6.0 questions/day
4y6m site age
Bitcoin

Bitcoin

Q&A for Bitcoin crypto-currency enthusiasts

10k questions
16k answers
89% answered
19k users
5.7k visits/day
5.9 questions/day
4y6m site age
Linguistics

Linguistics

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

3.7k questions
6.1k answers
82% answered
6.6k users
2k visits/day
3.2 questions/day
4y5m site age
Biblical Hermeneutics

Biblical Hermeneutics

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

3.1k questions
6.5k answers
94% answered
5.6k users
6.8k visits/day
2.6 questions/day
4y4m site age
History

History

Q&A for historians and history buffs

4.9k questions
9.8k answers
94% answered
9.9k users
8.5k visits/day
3.6 questions/day
4y4m site age
LEGO® Answers

LEGO® Answers

Q&A for LEGO® and building block enthusiasts

1.6k questions
2.8k answers
96% answered
4.2k users
2.4k visits/day
1.2 questions/day
4y4m site age
Spanish Language

Spanish Language

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

2.8k questions
6.9k answers
100% answered
6.2k users
7.6k visits/day
2.3 questions/day
4y3m site age
Computational Science

Computational Science

Q&A for scientists using computers to solve scientific problems

4.9k questions
7.1k answers
81% answered
11k users
2.3k visits/day
5.1 questions/day
4y3m site age
Movies & TV

Movies & TV

Q&A for movie and tv enthusiasts

10k questions
16k answers
93% answered
20k users
31k visits/day
18 questions/day
4y3m site age
Chinese Language

Chinese Language

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

3.2k questions
8.6k answers
99% answered
6.9k users
1.5k visits/day
2.3 questions/day
4y2m site age
Biology

Biology

Q&A for biology researchers, academics, and students

11k questions
14k answers
86% answered
13k users
17k visits/day
16 questions/day
4y2m site age
Poker

Poker

Q&A for serious players and enthusiasts of poker

917 questions
2.2k answers
97% answered
2.7k users
1.2k visits/day
1.1 questions/day
4y1m site age
Mathematica

Mathematica

Q&A for users of Mathematica

31k questions
47k answers
90% answered
23k users
9.3k visits/day
33 questions/day
4y1m site age
Cognitive Sciences

Cognitive Sciences

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

3.5k questions
4.3k answers
81% answered
7.8k users
2k visits/day
4.4 questions/day
4y1m site age
The Great Outdoors

The Great Outdoors

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

2.5k questions
6k answers
98% answered
5.3k users
4.7k visits/day
2.3 questions/day
4y1m site age
Martial Arts

Martial Arts

Q&A for students and teachers of all martial arts

920 questions
3.4k answers
98% answered
3.4k users
1.8k visits/day
0.9 questions/day
4y1m site age
Sports

Sports

Q&A for participants in team and individual sport activities

2.6k questions
4.3k answers
95% answered
4.9k users
5.4k visits/day
2.5 questions/day
4y site age
Academia

Academia

Q&A for academics and those enrolled in higher education

13k questions
31k answers
99% answered
36k users
21k visits/day
16 questions/day
4y site age
Computer Science

Computer Science

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

13k questions
17k answers
87% answered
34k users
7.2k visits/day
18 questions/day
3y11m site age
The Workplace

The Workplace

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

9.7k questions
31k answers
100% answered
30k users
32k visits/day
12 questions/day
3y10m site age
Windows Phone

Windows Phone

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

2.6k questions
3.4k answers
82% answered
8.2k users
6.1k visits/day
3.0 questions/day
3y10m site age
Chemistry

Chemistry

Q&A for scientists, academics, teachers and students

13k questions
16k answers
85% answered
15k users
28k visits/day
27 questions/day
3y10m site age
Chess

Chess

Q&A for serious players and enthusiasts of chess

2.5k questions
5.9k answers
96% answered
6.9k users
2.6k visits/day
3.1 questions/day
3y9m site age
Raspberry Pi

Raspberry Pi

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

11k questions
15k answers
81% answered
30k users
27k visits/day
19 questions/day
3y8m site age
Russian Language

Russian Language

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

1.8k questions
4.9k answers
100% answered
5k users
1.1k visits/day
1.9 questions/day
3y8m site age
Islam

Islam

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

4.8k questions
8.5k answers
83% answered
7.5k users
10k visits/day
5.4 questions/day
3y8m site age
Salesforce

Salesforce

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

37k questions
46k answers
73% answered
18k users
24k visits/day
57 questions/day
3y7m site age
Ask Patents

Ask Patents

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

2.2k questions
3.6k answers
79% answered
8.4k users
1.4k visits/day
3.3 questions/day
3y5m site age
Genealogy & Family History

Genealogy & Family History

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

1.4k questions
2.8k answers
93% answered
2.2k users
880 visits/day
1.1 questions/day
3y4m site age
Robotics

Robotics

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

2.3k questions
3.7k answers
89% answered
7.4k users
1.8k visits/day
3.6 questions/day
3y4m site age
ExpressionEngine® Answers

ExpressionEngine® Answers

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

11k questions
14k answers
80% answered
4.4k users
1.3k visits/day
5.0 questions/day
3y3m site age
Politics

Politics

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

2.1k questions
3.6k answers
89% answered
4.8k users
2.6k visits/day
2.3 questions/day
3y2m site age
Anime & Manga

Anime & Manga

Q&A for anime and manga fans

7.5k questions
9.8k answers
87% answered
12k users
21k visits/day
11 questions/day
3y2m site age
Magento

Magento

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

32k questions
38k answers
77% answered
22k users
32k visits/day
63 questions/day
3y1m site age
English Language Learners

English Language Learners

Q&A for speakers of other languages learning English

23k questions
41k answers
97% answered
22k users
45k visits/day
28 questions/day
3y1m site age
Sustainable Living

Sustainable Living

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

870 questions
1.8k answers
96% answered
2.8k users
1.1k visits/day
0.9 questions/day
3y1m site age
Tridion

Tridion

Q&A for Tridion developers and administrators

3.9k questions
6.4k answers
94% answered
1.5k users
720 visits/day
4.1 questions/day
3y 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

2.7k questions
3.8k answers
86% answered
8.4k users
2.9k visits/day
3.9 questions/day
2y11m site age
Network Engineering

Network Engineering

Q&A for network engineers

5.7k questions
8.7k answers
84% answered
16k users
12k visits/day
10 questions/day
2y9m site age
Open Data

Open Data

Q&A for developers and researchers interested in open data

2.1k questions
3.2k answers
81% answered
7.7k users
1.6k visits/day
2.3 questions/day
2y9m site age
Freelancing

Freelancing

Q&A for self-employed and freelance workers

962 questions
2.4k answers
98% answered
7.9k users
864 visits/day
1.1 questions/day
2y9m site age
Blender

Blender

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

15k questions
17k answers
81% answered
14k users
13k visits/day
30 questions/day
2y9m site age
MathOverflow

MathOverflow

Q&A for professional mathematicians

68k questions
108k answers
78% answered
52k users
21k visits/day
40 questions/day
6y5m site age
Space Exploration

Space Exploration

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

3.6k questions
6k answers
95% answered
7.8k users
5.8k visits/day
6.7 questions/day
2y7m site age
Sound Design

Sound Design

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

7.1k questions
21k answers
92% answered
7.2k users
4.8k visits/day
3.5 questions/day
5y3m site age
Astronomy

Astronomy

Q&A for astronomers and astrophysicists

2.9k questions
4.3k answers
92% answered
6.3k users
1.6k visits/day
6.6 questions/day
2y5m site age
Tor

Tor

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

2.4k questions
3k answers
81% answered
5.6k users
3.3k visits/day
2.1 questions/day
2y5m site age
Pets

Pets

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

2.7k questions
4.2k answers
91% answered
4k users
9.8k visits/day
2.4 questions/day
2y4m site age
Amateur Radio

Amateur Radio

Q&A for amateur radio enthusiasts

1.1k questions
2k answers
95% answered
3.8k users
938 visits/day
1.3 questions/day
2y4m site age
Italian Language

Italian Language

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

1.1k questions
2k answers
99% answered
2k users
1.3k visits/day
2.1 questions/day
2y3m site age
Stack Overflow em Português

Stack Overflow em Português

Q&A for programadores profissionais e entusiastas

37k questions
50k answers
80% answered
26k users
22k visits/day
69 questions/day
2y2m site age
Aviation

Aviation

Q&A for aircraft pilots, mechanics, and enthusiasts

5.2k questions
11k answers
99% answered
9.3k users
12k visits/day
9.9 questions/day
2y2m site age
Ebooks

Ebooks

Q&A for ebook publishers and readers

709 questions
1.2k answers
83% answered
3.8k users
1.1k visits/day
0.4 questions/day
2y2m site age
Beer

Beer

Q&A for beer aficionados and collectors

467 questions
1.1k answers
97% answered
2.9k users
1.3k visits/day
0.4 questions/day
2y1m site age
Software Recommendations

Software Recommendations

Q&A for people seeking specific software recommendations

8k questions
8.3k answers
58% answered
15k users
4.9k visits/day
13 questions/day
2y site age
Arduino

Arduino

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

5.6k questions
7.9k answers
77% answered
12k users
8.1k visits/day
12 questions/day
2y site age
Expatriates

Expatriates

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1.7k questions
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