GATE

GATE (General Architecture for Text Engineering) is an architecture, framework and development environment for developing, evaluating and embedding Human Language Technology. See http://gate.ac.uk for full details.

GATE INSTALLER DOWNLOAD for Windows

You can also download from http://sourceforge.net/projects/gate/files/gate/6.0/gate-6.0-build3764-installer-win.exe/download

GATE requires Java version of 1.5 and above
you can download Java for Windows xp/Vista, here and also from oracle sun home page