TechToolbox: Developer Tools

TechToolbox packs 45 tools for developers, system administrators and network administrators into a single native app — 100% offline, ad-free, no account and zero telemetry.

🛠 DEVELOPMENT
• JSON, XML, YAML formatter/validator
• Base64 & URL encoder/decoder, hash generator (MD5, SHA…)
• JWT decoder, Unix timestamp converter
• Advanced regex tester, diff comparator
• Generators: UUID, passwords/tokens, Lorem Ipsum, QR code (scanner included)
• Converters: text case, number bases, colors
• Cron expression parser/explainer, Markdown previewer
• Git, Docker & HTTP cheatsheets

🌐 NETWORK
• IPv4 subnet calculator (CIDR / VLSM)
• Network unit converter
• Well-known ports reference table
• SSL certificate viewer, MAC address reader

🖥 SYSTEM ADMINISTRATION
• Guided crontab generator
• Storage & time unit converter
• Advanced log viewer
• Config snippet generator
• Uptime / SLA calculator
• Windows / Sysmon error code database
• Linux man pages

🔐 SECURITY
• Password strength checker
• AES encryption/decryption
• Hash comparator

📋 PRODUCTIVITY
• Snippet manager (optional PIN/biometric encryption)
• Quick technical notepad

🌍 ONLINE TOOLS — clearly badged category
Ping, TCP connection test, DNS lookup and reverse DNS (PTR), Whois, SPF/DKIM/DMARC checker, TLS/handshake test, remote certificate viewer, HTTP headers inspector, HTTP request tester, My public IP.
These tools only contact the host you type yourself — never a server run by the publisher.

⭐ WHY TECHTOOLBOX?
• Zero ads, zero trackers, zero telemetry — now and always
• Every offline tool works with no connection and no account
• Instant search, favorites and recent tools: find any tool in a second
• Native, lightweight and fast — no web wrapper
• Interface translated into 7 languages: English, French, German, Italian, Spanish, Dutch, Danish

👤 MADE FOR
Developers, DevOps, system and network administrators, IT students — and anyone who wants their technical tools always at hand, even offline.

💎 FREE AND PRO
A complete base set of tools is free, with no ads. The one-time Pro unlock (no subscription) opens all advanced tools and everything coming next.

Download TechToolbox and keep your developer toolbox in your pocket — even with no network.