RXVT is a popular open-source terminal emulator for the X Window System. It is highly configurable and customizable, allowing users to tune various aspects to suit their preferences and needs.
Some key features of RXVT include:
RXVT excels at providing a fast and lightweight terminal environment while still allowing extensive user customization. The active development community behind it also keeps adding new features and fixes. It's a great choice for developers, system administrators and power users looking for a capable and versatile terminal emulator.