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Web3 & Blockchain 35 Passkey Address Deriver DKMS Key Visualizer X402 Payment Encoder Impermanent Loss Calculator ERC-4626 Vault Analyzer

Security & Auth 33 TLS Certificate Checker Prompt Injection Tester OWASP ZAP Report Analyzer Security Policy Generator Security Headers Analyzer

Data Formats 20 JSON Viewer JSON Linter JSON Minify JSON <> YAML TOML YAML JSON Converter

Developer Tools 34 Git Cheat Sheet Crontab Generator SQL Formatter SQL to ER Diagram SQL Query Plan

Converters & Calculators 8 Unix Timestamp Converter Everyday Converters Date-Time Converter Case Converter Text to Binary

Network & Web 12 IPv4 Subnet Calculator IPv4 Converter Suite MAC Address Toolkit IPv6 ULA Generator URL Encoder/Decoder

Compliance & Standards 20 SOC 2 Readiness Checklist BOM Diff Tool BOM Cost Roll-up Battery Passport Checklist DPP JSON Validator

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QUICK UTILITIES - QR, TIMER, EMOJI AND KEYCODES

Quick Utilities

QR codes, timers, emoji and more small helpers.

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Small utilities bundled into one page. Camera recording uses your browser APIs only; nothing is uploaded.

Self-hosted MCP infrastructure for AI agents — plus a library of free developer tools that run where your data lives.

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