IP Subnet Calculator / CIDR Converter — desktop.engineer
Compute network, broadcast, host range, and mask from a CIDR notation.
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SSH Key Generator — RSA, ECDSA, Ed25519
Public Key Inspector / Decoder
~/.ssh/config Generator — SSH Config Builder
OpenSSH ↔ PuTTY Converter
Install SSH Key — ssh-copy-id Command Generator
chmod Cheat Sheet — SSH Key Permissions (600, 644)
Sysadmin Password Generator
Application Key Generator (.env)
Checksum Generator / Verifier
IP Lookup
Nginx Block Generator
Self-Signed SSL Certificate Generator
Cron Expression Generator
Universal Format Converter
JSON & YAML Linter — Online Formatter
Swiss Knife Encoder / Decoder