Best alternatives to CMS Detect - What CMS is that site using? (2026)
10 Chrome extensions that do a similar job to CMS Detect, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.
CMS Detect - What CMS is that site using? today
CMS Detect alternatives, compared
- 1
Site Inspector
Inspect. Analyze. Understand. All-in-one tool for web developers and SEO professionals. Comprehensive web analysis and insights.
≈10K users4.8★ from 55 ratingsUpdated 15 months ago7 permissions- About 3.0× fewer users than CMS Detect
- Updated more recently
- Asks for more permissions (7 vs 2)
- 2
Similarweb - Website Traffic, AI Traffic & SEO Checker
Instant website analysis, AI traffic insights, and SEO metrics at your fingertips.
≈1M users4.6★ from 3.8K ratingsUpdated 2 weeks ago6 permissions- About 33× more users than CMS Detect
- Updated more recently
- Asks for more permissions (6 vs 2)
- 3
META SEO inspector
Meta SEO Inspector helps web developers and curious users explore what’s hidden behind any web page. Instantly check a site’s HTML…
≈200K users4.4★ from 628 ratingsUpdated 7 days ago3 permissions- About 6.7× more users than CMS Detect
- Rated 0.4 stars lower
- Updated more recently
- Asks for more permissions (3 vs 2)
- 4
Website Page Counter for SEO
Quickly list and count all pages of any website in a single click. Built for SEO and web developers.
≈3K users5.0★ from 3 ratingsUpdated 9 months ago2 permissions- About 10× fewer users than CMS Detect
- Updated more recently
- Listed under Tools
- 5
Detailed SEO Extension
Get SEO insights at the click of a button to any website you're currently on. Built by full-time SEO's for daily analysis.
≈600K users4.9★ from 233 ratingsUpdated 4 months ago5 permissions- About 20× more users than CMS Detect
- Updated more recently
- Asks for more permissions (5 vs 2)
- 6
Website SEO Checker
Get free on-page SEO report by 100+ parameters with the best website SEO checker
≈200K users4.6★ from 220 ratingsUpdated 7 months ago3 permissions- About 6.7× more users than CMS Detect
- Rated 0.2 stars lower
- Updated more recently
- Asks for more permissions (3 vs 2)
- 7
SEO Analysis & Website Review by WooRank
Instant SEO analysis and website reviews for SEO, mobile, usability and social media. The freshest data when and where you want it.
≈200K users3.9★ from 615 ratingsNot updated for 4+ years1 permissions- About 6.7× more users than CMS Detect
- Rated 0.9 stars lower
- Updated less recently
- Asks for fewer permissions (1 vs 2)
- 8
UnderTheHood - Check Which Technology Is Behind Any Website
See what any website is built with: detect its full tech stack, 500+ technologies, plus security, SEO & speed checks.
≈2K users5.0★ from 2 ratingsUpdated 4 months ago5 permissions- About 15× fewer users than CMS Detect
- Updated more recently
- Asks for more permissions (5 vs 2)
- Listed under Tools
- 9
Website Ranking and SEO Checker by Semalt
Semalt SEO Extension is a free SEO tool to track websites’ Google rankings and spot issues that keep you from attracting traffic.
≈10K users4.8★ from 219 ratingsUpdated 15 months ago198 permissions- About 3.0× fewer users than CMS Detect
- Updated more recently
- Asks for more permissions (198 vs 2)
- Listed under Tools
- 10
Analysis SEO & Website Checker - PR-CY
Check your website on technical, seo content and popularity aspects.
≈8K users4.9★ from 571 ratingsNot updated for 2+ years3 permissions- About 3.8× fewer users than CMS Detect
- Updated less recently
- Asks for more permissions (3 vs 2)
CMS Detect alternatives: questions
What is the best alternative to CMS Detect?
By users, the most popular alternative is Similarweb - Website Traffic, AI Traffic & SEO Checker with ≈1M users and a 4.6-star rating. The closest match by what it does is Site Inspector.
Which CMS Detect alternative has the best rating?
Detailed SEO Extension has the highest rating of these alternatives with 50+ ratings: 4.9 out of 5 from 233 ratings.
Is there a CMS Detect alternative that asks for fewer permissions?
SEO Analysis & Website Review by WooRank asks for 1 permissions, against 2 for CMS Detect.
How many alternatives to CMS Detect are there?
We list 10 close alternatives to CMS Detect on the Chrome Web Store, picked by what they do and ranked by how close they are.
Users and ratings are the figures shown on the Chrome Web Store, re-checked continuously. Alternatives are matched on name, description, category and topic. Browse best-of lists by niche.