There are many alternatives to Raptor Chess Interface for Linux if you are looking for a replacement. The best Linux alternative is XBoard, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Raptor Chess Interface and three of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Raptor Chess Interface are eboard and Jin.
XBoard, also known as WinBoard on Microsoft operating systems, is a free graphical user interface client developed by Tim Mann that is compatible with various chess engines that support the Xboard Communication Protocol such as GNU Chess.
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eboard is a chess interface for Unix-like systems (GNU/Linux, FreeBSD, Solaris, etc.) based on the GTK+ GUI toolkit. It provides a chess board interface to ICS (Internet Chess Servers) like FICS and to chess engines like GNU Chess, Sjeng and Crafty.
Jin is an open source, cross platform, graphical client for chess servers, written in Java. Jin can run either as a standalone application (available at this website) or as an applet, directly from your browser (available at the chess server's website).
