urxvt
Rxvt-unicode.
TLDR
Open a new urxvt window
$ urxvt
Run in a specific directory
$ urxvt -cd [path/to/directory]
Run a command in a new urxvt window
$ urxvt -e [command]
Run a command and keep the window open
$ urxvt --hold -e [command]
Run a command within the "sh" shell
$ urxvt -e [sh] -c [command]