cmux.dev
cmux - The terminal built for multitasking
Last scanned Aug 24, 2026, 1:14 PM
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
Top issues to fix
2 issues found
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
SEO
1 issue(s) found
Performance
256 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
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
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
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
- 54
- 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
30 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.dev
- Final URL
- https://cmux.com/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 241 ms
- HTML size
- 780 KB
- Redirect chain
- https://cmux.dev → https://cmux.com/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does cmux.dev use?
- cmux.dev is built with Next.js.
- Is cmux.dev secure (HTTPS)?
- Yes. cmux.dev uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 17, 2026.
- Who hosts cmux.dev?
- cmux.dev is hosted on AWS, behind Vercel CDN.
- What is cmux.dev's SEO score?
- cmux.dev scored 95/100 for SEO in the latest analysis (excellent).
- What is cmux.dev's overall website score?
- cmux.dev has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.
- What company operates cmux.dev?
- cmux.dev 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.
OpenGraph & Twitter Card
OpenGraph
Twitter Card