Terra is a GTK+3.0 based terminal emulator with useful user interface, it also supports multiple terminals with splitting screen horizontally or vertically.
rxvt-unicode Alternatives
rxvt-unicode is described as 'Rxvt-unicode is a highly customizable terminal emulator forked from rxvt. Commonly known as urxvt, rxvt-unicode can be daemonized to run clients within a single process in order to minimize the use of system resources' and is a terminal emulator in the os & utilities category. There are more than 50 alternatives to rxvt-unicode for a variety of platforms, including Linux, Windows, BSD, Mac and Android apps. The best rxvt-unicode alternative is PuTTY, which is both free and Open Source. Other great apps like rxvt-unicode are Tabby, Termux, Windows Terminal and Cmder.
Alternatives list
A stupidly simple web-based terminal emulator, with common tools and Starship enabled (via Docker)!
