XBoard

XBoard

GNU Chess 5.0.7 on XBoard 4.2.7
Developer(s)	GNU project
Stable release	4.9.1[1]  / 1 August 2016
Repository	git.savannah.gnu.org/r/xboard.git
Operating system	Linux, FreeBSD, NetBSD, OpenBSD, Microsoft Windows, macOS
Type	Computer chess
License	GPL
Website	XBoard

XBoard is a graphical user interface chessboard for chess engines under the X Window System. It is developed and maintained as free software by the GNU project. WinBoard is a port of XBoard to run natively on Microsoft Windows.