A mobile phone operating system based on the Linux kernel. You can do some interesting stuff on it with Termux. Links to this note NNCP on Android To use NNCP on Android, we need a way to build and run it. The easiest option for that is Termux. Building an Asynchronous, Internet-Optional Instant Messaging System I loaded up this title with buzzwords. The basic idea is that IM systems shouldn’t have to only use the Internet.