Network Tools
Calculate, test, and parse network configurations
CIDR Calculator
Calculate IP ranges, subnet masks, and available host counts
API Client
Test REST APIs with custom headers, body, and authentication
Bulk API Invoker
Execute multiple API calls from CSV with URL templates
SOAP Client
Parse WSDL and test SOAP web services with XML requests
gRPC Client
Test gRPC services with protobuf message building
WebSocket Client
Test WebSocket connections with real-time message exchange
SSE Client
Connect to Server-Sent Events streams and view real-time events
Cron Parser
Parse cron expressions to human readable schedules
About Network Tools
Network configuration and API testing are essential developer tasks. Our CIDR calculator helps you plan IP subnets and understand network ranges. Test REST APIs, SOAP web services (with WSDL parsing), and gRPC endpoints (with protobuf support) directly in your browser. The cron parser decodes scheduling expressions into plain English.