The DNS protocol is conventionally used to ask for the IP address of a given website. Here it's used to send messages and retrieve other messages, instead of asking for a website IP address and retrieving its IP address.
This tool can be used to send messages by exploiting a flaw in the DNS protocol, but it could be used (as someone pointed out in the reddit thread) to exfiltrate data from a network. I'm not responsible for any misuse of the project. Also note that it's most likely that your ISP is logging your DNS queries, thus it's not a 100% anonymous.
Most contributors are in Europe
Ideal: 1 PR a month
Check out the issues if you want to contribute to the project, and don't forget to have fun with it!