Free & Open
Technical tools that
actually work
Fast, free web tools for IT admins, developers, MSPs, and security professionals. No sign-ups. No trackers. No nonsense.
Web Tools
Password Generator
Cryptographically secure passwords and passphrases with strength checker.
IP Address Lookup
Instantly see your public IP address and location info.
Subnet Calculator
Calculate CIDR ranges, network addresses, and host counts.
MAC OUI Lookup
Identify the manufacturer of any network device by MAC address.
Email Record Validator
Check SPF, DKIM, and DMARC DNS records for any domain.
DNS Propagation Checker
Check global DNS propagation status across multiple resolvers.
IP Reputation Checker
Check if an IP address is blacklisted or flagged for abuse.
CSS Flexbox & Grid Generator
Visually build and copy CSS layout code instantly.