Window Positioner is a free Chrome add-on developed by S. Haines that allows users to launch and position windows when Chrome starts up. This tool is particularly useful for kiosk-mode applications or for users who want a specific web page to open in fullscreen mode when the browser starts.

With Window Positioner, you can specify the pages you want to open in new windows upon Chrome startup. The add-on also gives you the ability to set the width, height, and position of each window in pixels. Additionally, you have the option to start a window in "full screen" mode.

For kiosk-mode applications, where a specific web page needs to be displayed in fullscreen mode upon browser startup, Window Positioner is an ideal solution. It also allows users to add Chrome to their startup programs, ensuring that the desired web page appears automatically after booting the computer.

Please note that Window Positioner's source code is available on GitHub for those interested in exploring or contributing to the project.