Alternatives and competitors
Sites like Stack Exchange
The 20 closest Q&A community network alternatives to Stack Exchange, ranked by what they actually offer, and the 9 technologies behind it.
Looking for an alternative to Stack Exchange? The closest matches are Stack Overflow, Answers and Quora. We match sites by what they actually offer, from their homepages, Wikidata and a summary by Claude, in any language. Vote on each alternative and leave a short note to help the next person choose.
- Neighbours
- k = 20
- Sites searched
- 4,032
- Vector
- 384-d
- Query
- 6 ms
01 · Entity
About Stack Exchange
Stack Exchange stackexchange.com
Hot Questions - Stack Exchange
Stack Overflow – 180+ community-powered knowledge sites.
Wikidata: network of question and answer websites
Summary by Claude
A network of over 180 topic-specific question-and-answer communities, from programming and mathematics to cooking, travel and philosophy, where users ask and answer questions and earn reputation through voting.
- Who it’s for
- Enthusiasts, professionals and learners seeking expert answers
- Business model
- Advertising and enterprise Q&A subscriptions
02 · Embedding space
Competitor map
Each alternative by how close its vector is to Stack Exchange’s (x) and how much traffic it gets, how much of the stack it shares, or where it sits in the embedding space itself (y). Lines split each axis at the median. Hover for the numbers, click to jump to it in the list.
similarity × popularity
03 · Nearest neighbours
Alternatives to Stack Exchange
Thumbs up if it’s a real alternative to Stack Exchange, thumbs down if it isn’t.
- 01
website for professional and enthusiast programmers
Very close cos 0.944 - 02
Answers - The Most Trusted Place for Answering Life's Questions
Answers is the place to go to get the answers you need and to ask the questions you want
Very close cos 0.935 - 03
American question-and-answer website
Very close cos 0.928 - 04
ResearchGate - Temporarily Unavailable
commercial scientific social network
Very close cos 0.911 - 05
DEV Community
A space to discuss and keep up software development and manage your software career
Very close cos 0.910 - 06
Wolfram|Alpha: Computational Intelligence
Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history, geography, engineering, mathematics, linguistics, sports, finance, music…
Very close cos 0.906 - 07
product discovery website
Very close cos 0.907 - 08
LinkedIn: Log In or Sign Up
1 billion members | Manage your professional identity. Build and engage with your professional network. Access knowledge, insights and opportunities.
Very close cos 0.906 - 09
Publications / My feed / Habr
collaborative blog
Very close cos 0.906 - 10
Patch - Everything Local: Breaking News, Events, Discussions
The best breaking news, stories, and events from the Patch network of local news sites
Very close cos 0.900 - 11
GeeksforGeeks | Your All-in-One Learning Portal
Your All-in-One Learning Portal. It contains well written, well thought and well explained computer science and programming articles, quizzes and practice/competitive programming/company interview Questions.
- Google Fonts
- Google Search Console
- Google Workspace
- Amazon SES
- Amazon CloudFront
- Google Ads conversion tracking
Very close cos 0.901 - 12
Liquipedia
esports encyclopedia
Very close cos 0.900 - 13
Yours for the making
Instructables is a community for people who like to make things. Come explore, share, and make your next project with us!
Very close cos 0.899 - 14
Simple Page
food focused online social networking service
Very close cos 0.899 - 15
Client Challenge
non-profit educational organization
Very close cos 0.900 - 16
Captcha Challenge…
online studying platform
Very close cos 0.898 - 17
Perplexity
Perplexity is a free AI-powered answer engine that provides accurate, trusted, and real-time answers to any question.
Very close cos 0.897 - 18
GameBanana | The Game Modding Community - Since 2001
Mods, Tutorials, Sprays, Works In Progress, Sound Mods and more for video games
Very close cos 0.898 - 19
Slashdot: News for nerds, stuff that matters, & software
Slashdot: News for nerds, stuff that matters. Timely news source for technology related news and B2B software reviews & comparisons.
Very close cos 0.898 - 20
Bazaarvoice | The UGC Platform for Authentic Shopper Experiences
The leading UGC platform for authentic ratings, reviews, visual UGC, and review syndication that powers discovery, shopper trust, and higher ecommerce conversion.
Very close cos 0.896
Ranked by score: the cosine similarity of each site’s vector to stackexchange.com’s, less a small penalty for generic sites that are close to everything. Highlighted technologies are ones Stack Exchange uses too. Votes and comments come from visitors and don’t change the ranking.
04 · Fingerprints
Technology
What Stack Exchange is built with, and what its closest competitors use, from its homepage’s code and its DNS records.
Built with
- JavaScript libraries
- jQuery asset https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js
- Fonts
- Google Fonts asset https://fonts.googleapis.com/
- Live chat & support
- Zendesk TXT v=spf1 ip4:52.38.191.241 include:_spf.google.com include:mailgun.org …
- CDN
- Cloudflare header cf-ray: a562fe340a42b2e7-HAM
- Email hosting
- Google Workspace MX aspmx.l.google.com
- Email delivery
- DNS hosting
- Cloudflare DNS NS sureena.ns.cloudflare.com
- SaaS tools (verified in DNS)
- Google Search Console TXT google-site-verification=PbDz-gjfB8Zt-6fgjpPjyh5-Qo2HsJp95qHdq4E0Gvk
Stack changes
No changes yet. Each new crawl is compared with the last one, and what Stack Exchange adds or drops shows up here.
What competitors use
Across the 20 closest sites.
- Google Search Console 20/20
- Google Workspace 14/20
- Apple Business · not on stackexchange.com 10/20
- Cloudflare 9/20
- Cloudflare DNS 8/20
- DocuSign · not on stackexchange.com 8/20
- Microsoft 365 · not on stackexchange.com 8/20
- Meta Business Suite · not on stackexchange.com 8/20
- OneTrust · not on stackexchange.com 7/20
- OpenAI · not on stackexchange.com 7/20
- Amazon Route 53 · not on stackexchange.com 7/20
- Atlassian · not on stackexchange.com 6/20
- SendGrid 6/20
- Zendesk 6/20
- GlobalSign · not on stackexchange.com 6/20
- Zoom · not on stackexchange.com 4/20