Xtermcontrol enables dynamic control of xterm properties. It makes it
easy to change colors, title, font and geometry of a running xterm, as
well as to report the current settings of these properties. Window
manipulations de-/iconify, raise/lower, maximize/restore and reset are
also supported.

To complete the feature set; xtermcontrol lets advanced users issue any
xterm control sequence of their choosing.

Homepage:
https://thrysoee.dk/xtermcontrol/
