Nettune is a free utility tool designed for Windows that focuses on network diagnostics and TCP optimization. It offers advanced features such as end-to-end network testing, including round-trip time (RTT) measurement, throughput testing, and latency detection under load. Users can benefit from pre-built configuration profiles tailored for BBR, FQ, and buffer tuning, streamlining the optimization process.

One of Nettune's standout features is its integration with the Model Context Protocol (MCP), allowing seamless interaction with AI models like Claude. This integration facilitates AI-assisted configuration, enhancing the user experience. Additionally, the safe apply and rollback functionality ensures that automatic snapshots are created before any configuration changes, providing a safety net for users.