Hide Windows solves the problem of your cluttering taskbar. If you have a window open which you don´t need to access frequently then simply go to that window [make that windows the active window] and while it is focus, click the icon of Hide Windows in the System Tray with the left mouse button. This will hide the window from the desktop and taskbar. This makes your taskbar clutter-free. The software is 100% free for any kind of usage including redistribution. For more information, visit the Home Page of Hide Windows´s web-site.