Best alternatives to Codex Dev (2026)
10 Chrome extensions that do a similar job to Codex Dev, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.
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Codex Dev alternatives, compared
- 1
Devaka Tools — SEO Pro Extension
On-page SEO audit overlay: inspect tags, headings, links, schema, and more — plus AI chat.
997 users5.0★ from 15 ratingsUpdated 3 weeks ago7 permissions- About 4.0× fewer users than Codex Dev
- Asks for fewer permissions (7 vs 12)
- Listed under Tools
- 2
Codex Auth
Export ChatGPT web session data into a local JSON file for personal backup. Convert and merge JSON locally/offline.
≈1K users5.0★ from 4 ratingsUpdated 4 months ago8 permissions- About 4.0× fewer users than Codex Dev
- Updated less recently
- Asks for fewer permissions (8 vs 12)
- 3
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 users4.8★ from 234 ratingsUpdated 5 months ago5 permissions- About 150× more users than Codex Dev
- Updated less recently
- Asks for fewer permissions (5 vs 12)
- 4
CMS Detect - What CMS is that site using?
As web designers, web developers, SEO specialists or just web enthusiasts, we often find sites and wonder what CMS was used to…
≈30K users5.0★ from 232 ratingsUpdated 22 months ago2 permissions- About 7.5× more users than Codex Dev
- Updated less recently
- Asks for fewer permissions (2 vs 12)
- 5
Similarweb - Website Traffic, AI Traffic & SEO Checker
Instant website analysis, AI traffic insights, and SEO metrics at your fingertips.
≈1M users4.5★ from 3.8K ratingsUpdated 3 weeks ago6 permissions- About 250× more users than Codex Dev
- Asks for fewer permissions (6 vs 12)
- 6
Codex Chrome Bridge
Receives commands from a local Codex bridge and controls the active tab.
≈9K users5.0★ from 1 rating8 permissions- About 2.3× more users than Codex Dev
- Asks for fewer permissions (8 vs 12)
- 7
SEOquake: On-Page SEO Checker
Run SEO audits, check technical issues, analyze links and keyword density, and see Semrush metrics as you browse and search.
≈1M users3.6★ from 2.6K ratingsUpdated 5 days ago5 permissions- About 250× more users than Codex Dev
- Asks for fewer permissions (5 vs 12)
- 8
Ahrefs SEO Toolbar
Save hours with a complete toolkit in one SEO extension. Insights for on-page, keyword research, and link analysis on any webpage.
≈400K users4.7★ from 568 ratingsUpdated in the last day8 permissions- About 100× more users than Codex Dev
- Asks for fewer permissions (8 vs 12)
- Listed under Tools
- 9
SEO META in 1 CLICK
Displays all meta data and main SEO information for the best SEO
≈1M users4.9★ from 1.3K ratingsNot updated for 2+ years2 permissions- About 250× more users than Codex Dev
- Updated less recently
- Asks for fewer permissions (2 vs 12)
- 10
Conductor for Chrome - SEO Extension
Experience faster, better, smarter SEO insights in one click. The most advanced SEO extension is now free for all marketers.
≈10K users4.5★ from 34 ratingsUpdated 5 months ago6 permissions- About 2.5× more users than Codex Dev
- Updated less recently
- Asks for fewer permissions (6 vs 12)
- Listed under Tools
Codex Dev alternatives: questions
What is the best alternative to Codex Dev?
By users, the most popular alternative is Similarweb - Website Traffic, AI Traffic & SEO Checker with ≈1M users and a 4.5-star rating. The closest match by what it does is Devaka Tools — SEO Pro Extension.
Which Codex Dev alternative has the best rating?
CMS Detect - What CMS is that site using? has the highest rating of these alternatives with 50+ ratings: 5.0 out of 5 from 232 ratings.
Is there a Codex Dev alternative that asks for fewer permissions?
CMS Detect - What CMS is that site using? asks for 2 permissions, against 12 for Codex Dev.
How many alternatives to Codex Dev are there?
We list 10 close alternatives to Codex Dev 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.