XTerm
Thomas E. Dickeyによって開発された、X Window Systemのための標準的なターミナルエミュレーター。
This version implements ISO/ANSI colors using the "new" color model (i.e., background color erase). It also implements most of the control sequences for VT220, as well as selected features from other DEC terminals such as VT320, VT420 and VT520.
https://invisible-island.net/xterm/