<li><ahref="http://inisyn.org/src/xup/">XUP</a> by inisyn research, opensource JTAG programming for Spartan 3E starter kit USB cable</li>
<li><ahref="http://www.ixo.de/info/usb_jtag/">USB JTAG adapter</a> by Kolja Waschk, opensource integration of the XILINX platform cable USB into OpenOCD and openwince JTAG Tools</li>
<li><ahref="http://www.rogerstech.co.uk/xc3sprog/">Spartan3 JTAG download tools for GNU/Linux (xc3sprog)</a></li>
<li><ahref="http://urjtag.org/">UrJTAG</a>, open source jtag tools with basic support for the xilinx XPCU</a></li>