Slibo aims to be a comfortable chess interface for KDE. Designed to be usable as a replacement for the xboard chess interface, it has much more functionality, and, on the other hand, is easy to use. Slibo can be used with common chess engines like crafty or gnuchess, but it provides its own chess engine too. You can

• Play against different engines, or watch them playing.
• Use multiple engines at the same time, for instance to analyze a game with different engines.
• Analyze your PGN files.
• Customize the look of the pieces and the board.

  License: free
  
  Additional System Requirements:
  

• Kde >=3
• Qt >=3
• gcc >=3
• sqlite
• OpenGL