NetworkCalc — IP & Subnet Tools

NetworkCalc — IP & MAC Network Calculator (Inspired by sipcalc) NetworkCalc is a multifunctional network analysis tool built into your browser. Inspired by the popular Linux utility sipcalc, this extension offers powerful tools for: - IPv4 and IPv6 address breakdown and subnet calculations - CIDR-to-netmask conversion and subnet membership checks - IPv6 subnet splitting and address expansion - MAC address tools with vendor (OUI) lookup - Encoding/decoding utilities: Base64, Hex, URL, ASCII, MD5 Perfect for network engineers, sysadmins, pentesters, and students. Some features require a license key (available via Boosty or Patreon). No cloud. Everything runs locally in your browser.