Native network diagnostics · macOS

See where the network breaks.

Quartz Probe turns ten command-line tools and twenty browser tabs into one focused Mac workspace—with conclusions, history, and reports instead of raw output alone.

Explore the 14-day trial → See what it diagnoses
Runs from your MacNo subscriptionmacOS 14+
⌕ example.com
⌘K

example.com

Resolved in 34ms · Cloudflare (1.1.1.1) · DoH

HEALTHY
RecordsMail securityDNSSECPropagation
A93.184.216.34300
AAAA2606:2800:220:1:248:1893:25c8:1946300
MX10 mail.example.com3600
NSa.iana-servers.net · b.iana-servers.net86400
Mail security needs attention2/3 pass
✓SPFConfigured with a valid hard-fail policy.
✓DKIM2048-bit signing key is valid.
△DMARCMonitoring only. Consider quarantine enforcement.
10+connected diagnostic and developer workspaces
⌘Kone command surface from anywhere in the app
14 daysfull Pro trial before a purchase decision
Local firstdiagnostic results stay on your Mac by default
The workspaces

One target. Every useful angle.

Start with a domain, IP, URL, certificate, HAR, or pasted value. Quartz Probe preserves context while you move from symptoms to cause.

01 / DNS

Records with a diagnosis

A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, and PTR—plus SPF, DKIM, DMARC, DNSSEC, DNSBL, DoH/DoT, resolver benchmarks, and propagation.

02 / TLS

Certificates you can act on

Chain, SANs, expiry, protocols, ciphers, ALPN, OCSP, HSTS, HTTP/2 and HTTP/3. Inspect local PEM, CRT, P12, and CSR files without uploading them.

03 / ROUTE

Latency hop by hop

Ping, traceroute, route GeoIP, and sustained MTR monitoring make the failure point visible instead of leaving you with one average number.

04 / HTTP + API

From response to root cause

Inspect redirects, timing, headers, security posture, and response bodies. Send REST requests with collections, environments, proxy, mTLS, and cURL import/export.

05 / SYSTEM

Ports, ownership, and identity

Inspect local and remote ports, owning processes, Whois, RDAP, GeoIP, ASN, and registration health without stitching together separate utilities.

06 / EVIDENCE

History worth keeping

Compare HAR captures, batch-check targets, search past work, rerun a diagnosis, and export clean PDF, CSV, or JSON reports for teammates.

Built for flow

Less setup between question and answer.

The app recognizes what you paste, routes it to the right workspace, and keeps the result available for follow-up checks.

01

Paste anything

A domain, IP, URL, host and port, certificate, JWT, timestamp, Base64, or HAR capture.

02

Read the conclusion

Health, timings, warnings, and recommended actions come before dense raw records and protocol fields.

03

Reproduce and share

Keep the result in history, rerun it later, compare changes, or export evidence without rebuilding the test.

Quartz Probe Pro

Depth and automation, paid once.

Every workspace supports useful single checks. Pro adds the analysis, monitoring, history, automation, and reporting that turn isolated tools into a professional workflow.

  • Mail security and DNSBL reports
  • DNSSEC and propagation
  • Certificate and domain reminders
  • Continuous MTR monitoring
  • Batch diagnostics
  • PDF, CSV, and JSON exports
  • Unlimited searchable history
  • API collections and environments
  • iCloud Sync
  • Shortcuts and URL automation
Privacy model

Your network work is not our dataset.

No relayDNS, TLS, HTTP, route, API, and utility work is initiated from your Mac—not proxied through a Quartz diagnostic backend.
No app telemetryTargets, results, histories, headers, certificates, and workspace data are not sent to Quartz for product analytics.
Explicit servicesSelected resolvers, IP/GeoIP/RDAP providers, speed-test endpoints, licensing, updates, and optional iCloud Sync are contacted only for the feature you use.
Local credentialsProxy credentials and mTLS passwords remain in memory for the current session and are excluded from diagnostic history.