Free, secure, and isolated system administration tools for developers and IT professionals.
For your security, all tools open in a new, isolated browser tab.
Describe your business idea, and let our AI generate catchy, brandable domain names for you instantly.
Generate Ideas with AI →Generate complex cron schedules easily without memorizing the syntax.
Launch Cron Tool →Instantly check DNS records (A, MX, NS, TXT, SOA) for any domain name.
Launch DNS Tool →Connect to a server to verify its SSL certificate validity, issuer, and expiration date.
Check SSL (via URL) →Check if your server IP or domain is listed on major anti-spam databases (RBLs).
Check IP Reputation →Paste your raw PEM certificate (.crt) or Certificate Signing Request (.csr) to decode and verify its contents.
Decode CSR / Certificate →