Termux

Termux is a terminal emulator that combines powerful terminal emulation with an extensive collection of Linux packages.

With Termux emulator, files can be edited with nano and vim editors. Also you can compile codes with gcc and clang.

Embedded in the yermux emulator is the pythone console, this console can be used as a pocket calculator also.

Other major features of termux ate; Accessing servers over shortly, running text-based games with frotz and the capability of checking out projects on GitHub.