Free tools

Networking & developer tools, free forever

A growing suite of 12 genuinely useful utilities — WHOIS, DNS, port & SSL checks, HTTP headers, password and hash generators, subnet math and more. No signup, no limits, no tracking.

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Free tools

Forever — no account needed

Run 100% in your browser

Network tools

Diagnose domains, DNS, ports and certificates — the checks you run before and after every deploy.

WHOIS Lookup

Registrar, dates & nameservers for any domain.

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DNS Lookup

Resolve A, AAAA, MX, TXT, NS, CNAME and SOA records.

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Port Checker

Test whether a TCP port is open, with latency.

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SSL Certificate Checker

Issuer, validity, expiry and chain for any HTTPS host.

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HTTP Header Checker

Inspect status code and response headers for a URL.

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What Is My IP

See your public IP address and reverse DNS.

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Subnet / CIDR CalculatorIn-browser

Network, broadcast, host range and counts from a CIDR.

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Developer tools

Everyday encode/format/generate utilities that run entirely in your browser.

Base64 Encode / DecodeIn-browser

Convert text to and from Base64, UTF-8 safe.

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JSON Formatter & ValidatorIn-browser

Beautify, minify and validate JSON instantly.

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UUID GeneratorIn-browser

Generate v4 UUIDs in bulk, copy with one click.

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Security tools

Generate strong secrets and hashes locally — nothing is ever sent to a server.

Password GeneratorIn-browser

Strong random passwords, generated in your browser.

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Hash GeneratorIn-browser

SHA-1, SHA-256, SHA-384 and SHA-512 hashes.

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Deploy your first server in under a minute

No credit card required to get started. Spin up a VPS, break things, and only pay for what you keep running.

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