Globalping is a community-powered platform that lets you run networking commands from probes all around the world. It basically solves the problem of "it works on my machine" but for networking.

You can run ping, traceroute, mtr, dig, and curl from thousands of distributed vantage points, including home ISPs, offices, and cloud servers. This gives you a real-world view of how your infrastructure performs for actual users, rather than just seeing clean connectivity between data centers.

It's great for debugging routing issues, verifying global DNS propagation, or benchmarking CDN performance. The project is free and open-source.