How to build and try Google Input Tools on Windows: 1. Check out the code. 2. Download the dependency projects. You can just run download_depends.py 3. Download gyp (Generate Your Projects) and put it in depends, or use this command: svn checkout -r 1984 http://gyp.googlecode.com/svn/trunk .\depends\gyp 4. If you're using Visual Studio of a version higher than 2012, for example VS2013, be sure to set MSVS_VERSION=2013 at the command prompt or in .\env.bat 5. Run build.bat to generate the msvs project and make a debug build. 6. Install the certificates resources\test.cer into Trusted Root Certification Authorities. 7. Run install_windows.bat with admin rights. Enjoy it!