What powers stackoverflow.com?
Last seen Jun 2026 · 54 technologies across 23 categories
Advertising
AppNexus
since Feb 2026
Criteo
since Oct 2025
Google AdSense
since Feb 2022
Google Publisher Tag
since Jun 2023
Hashtag Labs
since Apr 2026
ID5
since Feb 2026
OpenX
since Feb 2026
PubMatic
since Feb 2026
Rubicon Project
since Feb 2026
TripleLift
since Feb 2026
Analytics
comScore
since May 2018
Google Analytics
since Jun 2018
Linkedin Insight Tag
since Mar 2023
Quantcast Measure
since Jun 2018
Snowplow Analytics
since Feb 2026
Authentication
Google Sign-in
since Mar 2024
Caching
Varnish
since Jun 2018
CDN
Amazon S3
since Feb 2026
Cloudflare
since Aug 2018
Fastly
since Jun 2018
Google Hosted Libraries
since Feb 2022
jsDelivr
since Jul 2020
Netlify
since Mar 2022
Cookie compliance
OneTrust
since Mar 2022
Font scripts
Google Font API
since Sep 2018
JavaScript frameworks
JavaScript graphics
particles.js
since Aug 2018
JavaScript libraries
Load balancers
Amazon ALB
since Mar 2026
Marketing automation
Miscellaneous
Operating systems
Windows Server
since Aug 2018
PaaS
Amazon Web Services
since Aug 2022
Payment processors
PayPal
since Oct 2024
Programming languages
Security
Segmentation
Adobe Audience Manager
since Feb 2026
Tag managers
Google Tag Manager
since Feb 2022
Web frameworks
Microsoft ASP.NET
since Aug 2018
Web servers
Webmail
Apple iCloud Mail
since Jan 2023
Google Workspace
since Aug 2022
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| yahoo webmail | #13 | 134,500 |
| youtube | #33 | 38,900 |
| message oriented middleware | #3 | 29,300 |
| const | #3 | 19,600 |
| google drive | #43 | 19,200 |
| message-oriented middleware | #4 | 14,900 |
| or css | #1 | 13,800 |
| application/text | #1 | 12,300 |
| precompiled header | #4 | 12,200 |
| int | #2 | 12,000 |
| cfcalendar | #17 | 11,800 |
| stoi c | #5 | 11,500 |
| program counter | #7 | 11,500 |
| p/l | #1 | 11,200 |
| form in form | #1 | 11,200 |
| code 206 | #4 | 10,900 |
| vcs version control system | #6 | 10,200 |
| stack overflow | #1 | 10,100 |
| js underscore | #2 | 9,800 |
| qbonline | #10 | 9,300 |
| alloca | #2 | 9,000 |
| locales | #4 | 8,900 |
| cfcalendar | #19 | 7,400 |
| dictionary c | #4 | 7,200 |
| ws | #3 | 7,200 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 80% desktop
- 20% phone
United States
India
Germany
United Kingdom
France
Italy
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
9.05 / 10 · ranked #262 of all domains
38,007 referring domains · OpenPageRank
Search traffic
6,139,200 est. monthly organic visits (US)
2,184,814 keywords in Google's top 30
Core Web Vitals
| LCP | 1.4 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 2.4 MB · 585 requests
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| es.stackoverflow.com | 34 |
| ru.stackoverflow.com | 34 |
| stackoverflow.com | 33 |
| ja.stackoverflow.com | 32 |
| pt.stackoverflow.com | 32 |
| beta.stackoverflow.com | 29 |
| talent.stackoverflow.com | 17 |
| es.meta.stackoverflow.com | 15 |
| ja.meta.stackoverflow.com | 15 |
| meta.stackoverflow.com | 15 |
| pt.meta.stackoverflow.com | 15 |
| ru.meta.stackoverflow.com | 15 |
| insights.stackoverflow.com | 13 |
| chat.stackoverflow.com | 8 |
| www.stackoverflow.com | 6 |
| dev.insights.stackoverflow.com | 5 |
Full technology history →
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Recent changes
- dropped Cart Functionality Apr 2026
- dropped GumGum Apr 2026
- detected Hashtag Labs Apr 2026
- dropped TDesign Apr 2026
- detected Amazon ALB Mar 2026
- detected Adobe Audience Manager Feb 2026
- detected Amazon S3 Feb 2026
- detected Amazon Web Services Feb 2026
- detected AppNexus Feb 2026
- detected Google AdSense Feb 2026
- detected GumGum Feb 2026
- detected ID5 Feb 2026
- detected OpenX Feb 2026
- detected Prebid Feb 2026
- detected PubMatic Feb 2026
- detected Rubicon Project Feb 2026
- detected Snowplow Analytics Feb 2026
- detected TripleLift Feb 2026
- dropped 33Across Jan 2026
- detected Cart Functionality Jan 2026
- dropped Cart Functionality Dec 2025
- dropped Google AdSense Nov 2025
- detected 33Across Oct 2025
- detected Criteo Oct 2025
- detected reCAPTCHA Oct 2025
- detected Cart Functionality Sep 2025
- dropped reCAPTCHA Sep 2025