The Xilinx ISE is primarily used for circuit synthesis and design, while ISIM or the ModelSim logic simulator is used for system-level testing. Other components shipped with the Xilinx ISE include the Embedded Development Kit (EDK), a Software Development Kit (SDK) and ChipScope Pro.
ISE enables the developer to synthesize ('compile') their designs, perform timing analysis, examine RTL diagrams, simulate a design's reaction to different stimuli, and configure the target device with the programmer. Use of the last released edition from October 2013 continues for in-system programming of legacy hardware designs containing older FPGAs and CPLDs otherwise orphaned by the replacement design tool, Vivado Design Suite. Xilinx ISE ( Integrated Synthesis Environment) is a discontinued software tool from Xilinx for synthesis and analysis of HDL designs, which primarily targets development of embeddedfirmware for Xilinx FPGA and CPLD integrated circuit (IC) product families. products/design-tools/ise-design-suite.html
So, thinking I was on to a winner as I used this board during my time at uni, I downloaded and installed Xilinx ISE WebPACK.