netselect-apt
Create a `sources.list` file for a Debian mirror with the lowest latency.
TLDR
Create sources.list using the lowest latency server
$ sudo netselect-apt
Specify Debian branch, stable is used by default
$ sudo netselect-apt [testing]
Include non-free section
$ sudo netselect-apt --non-free
Specify a country for the mirror list lookup
$ sudo netselect-apt -c [India]