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cmux.com

cmux - The terminal built for multitasking

Last scanned Aug 24, 2026, 1:23 PM

92

Overall score

Excellent

Summary

Free and open source macOS terminal for AI coding agents. This website uses Next.js hosted on AWS behind Vercel CDN. SEO is excellent (95/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance good (75/100). Top issue: sitemap.xml not found.

cmux

Free and open source macOS terminal for AI coding agents. Works with Claude Code, Codex, OpenCode, Gemini CLI, Kiro, Aider, and any CLI tool.

United States
Hosted on AWS

Products & pricing

Product and pricing information published in this site's own structured data.

Pricing

$0 USD

Top issues to fix

2 issues found

  • 1 cookie without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

95

SEO

1 issue(s) found

75

Performance

41 ms

100

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

cmux

Free and open source macOS terminal for AI coding agents. Works with Claude Code, Codex, OpenCode, Gemini CLI, Kiro, Aider, and any CLI tool.

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
cmux - The terminal built for multitasking
Description
Free and open source macOS terminal for AI coding agents. Works with Claude Code, Codex, OpenCode, Gemini CLI, Kiro, Aider, and any CLI tool.
Canonical
https://cmux.com
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
cmux - The terminal built for multitasking
og:description
Free and open source macOS terminal for AI coding agents. Works with Claude Code, Codex, OpenCode, Gemini CLI, Kiro, Aider, and any CLI tool.
og:type
website
og:url
https://cmux.com

Twitter Card

twitter:card
summary_large_image
twitter:title
cmux - The terminal built for multitasking
twitter:description
Free and open source macOS terminal for AI coding agents. Works with Claude Code, Codex, OpenCode, Gemini CLI, Kiro, Aider, and any CLI tool.

Technologies

Detected frameworks, languages, and tools.

Hosting & CDN

Hosting provider
AWS
CDN provider
Vercel
IP address
216.150.1.1
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 216.150.1.1
AAAA
MX
  • aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • alt2.aspmx.l.google.com
TXT
  • v=spf1 include:_spf.google.com ~all
  • google-site-verification=xzYkUALkIp1YaFRXU9UsZUr-fBuVBgd9Y-0-Y7QjLeI
  • google-site-verification=8XjOH71LPBqC66pUIVxNNH1QLkVWL0uLJulvOyt5OYg
NS
  • vin.ns.cloudflare.com
  • sara.ns.cloudflare.com
CAA
CNAME
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
cmux.com
Valid from
Jul 19, 2026
Valid to
Oct 17, 2026
Days until expiry
53
SAN domains
cmux.com

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyEnabled

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 3 · H3 4

Links

26 internal · 39 external · 0 broken

Images

31 total · 0 missing alt

Scripts / Styles

29 scripts · 1 stylesheets

JS / CSS size

2.3 MB · 69.9 KB

Page size

780 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://cmux.com
Final URL
https://cmux.com
HTTP status
200
HTTP version
HTTP/2
Response time
26 ms
HTML size
780 KB
Redirect chain
https://cmux.com

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Frequently asked questions

What technology does cmux.com use?
cmux.com is built with Next.js.
Is cmux.com secure (HTTPS)?
Yes. cmux.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 17, 2026.
Who hosts cmux.com?
cmux.com is hosted on AWS, behind Vercel CDN.
What is cmux.com's SEO score?
cmux.com scored 95/100 for SEO in the latest analysis (excellent).
What is cmux.com's overall website score?
cmux.com has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
What company operates cmux.com?
cmux.com is operated by cmux. Free and open source macOS terminal for AI coding agents. Works with Claude Code, Codex, OpenCode, Gemini CLI, Kiro, Aider, and any CLI tool.
What products does cmux.com offer?
cmux.com offers Pricing.