Namebench

[2] Namebench runs on Windows, OS X, and Unix.

[1] Its purpose is to find the fastest DNS server one could use.

[1] It can run the benchmark using your web browser history, tcpdump output, or standardized datasets, in order to provide an individualized recommendation.

[1] Namebench was written using open-source tools and libraries.

[1] It was created by Google engineer Thomas Stromberg.