Xilinx CPLD and FPGA related software as well as hardware description language (HDL) such as VHDL.
How to install the free Xilinx software tools for CPLD and FPGA development – the Xilinx ISE WebPACK version 14.
This article shows how to make a new project using the Xilinx ISE software. A VHDL project for configuring a Xilinx CPLD is created.