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.

Download Free for Mac → Explore Pro Check current IP

Free foreverNo subscriptionmacOS 14+

Live diagnosticSSL

TRUSTEDTLS 1.3 · 3 CERTIFICATES

76DAYS UNTIL EXPIRY

10+connected diagnostic and developer workspaces

⌘Kone command surface from anywhere in the app

Free forevercore diagnostics remain available without a license

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.

Paste anything

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

Read the conclusion

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

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
Response and HAR comparison
Shortcuts and URL automation

Privacy model

Your network work is not our dataset.

Local by defaultDNS, TLS, HTTP, route, API, and utility work starts on your Mac. The optional Current Network check contacts Quartz only when you request it.

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.

Explicit cloud checksThe free Current Network check sends only the public IP observed by Quartz. It does not upload other targets, history, credentials, or Mac identity.

Focused Mac tools from the same studio.

Quartz Probe is one of five private, focused Mac utilities from the independent Quartz studio.

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