In a recent blog post, John Graham-Cumming discussed some SSDP-based DDoS activity and introduced three command-line tools that are part of a small suite designed for handling data. These tools include mmhistogram, which generates ASCII histograms; mmwatch, which calculates rates from changing numbers in output; and mmsum, which sums floating point numbers. The author shared these tools on the Cloudflare Github after receiving a reader's request to open source them.