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Measure TCP or UDP round-trip latency on Windows

Check websites, endpoints, ports, DNS, and scheduled heartbeats, then send alerts when checks fail.

Inspect TCP and UDP connections from a terminal

Throughput and responsiveness tests from the continuing iperf2 project

Send and receive test packets with a desktop or CLI client

Check endpoint and job health, then turn failed checks into incidents and status-page updates.

Send time-series metrics to a managed Graphite service with Grafana dashboards and alerting.

QUIC proxy with a documented cross-platform TUN mode

Explicit DNS queries over plain and encrypted transports

Check reachability and responses from several remote locations

List open Windows ports with their owning processes

Inspect Windows TCP and UDP endpoints with process ownership

A Windows ping utility with high-resolution timing and graphs

An independent C++ client for Speedtest measurements

A DNS CLI with multiple transports and output formats

Connect sockets, streams and terminals for network diagnostics