4t Tray Minimizer!

Allows almost any program to be minimized to the system tray by right clicking its minimize button.

Actual Window Manager is 13 tools in 1. You can add new buttons to any windows title bar, add transparency effect to any window, minimize any window to tray or to any edge of the desktop, automatically close annoying windows and much more.

DM2 provides several Windows enhancements that may help in every-day work. One of the nicest and most popular features of DM2 is minimizing windows to floating icons® (unique feature!) freeing both task bar and tray bar space. Moreover, DM2 can manipulate windows in various ways: minimize to tray, make them standing always on-top over all other windows, roll to caption, resize, align to screen borders, hide, set the opacity etc. DM2 also helps with Open/Save dialog boxes, by providing user-defined menu with favorites and recent files and folders. Plenty of programs settings options will satisfy most of requirements. »

Always-on-top is the free utility that allows any program window to stay on top of all other windows even when it does not have the focus.

SmartSystemMenu extends system menu of all windows in the system. It appends next custom items to menu:

The Wonderful Icon is a small Windows utility that resides in your PC's taskbar tray. With it, you can:

PowerMenu is a small application that some extra menu items to the windows control menu in addition to the standard "Close", "Maximize", etc options. The extra menus are: Priority, Always On Top, Transparency and Minimize To Tray.

Clicky Gone allows you to hide your selected windows from view, this includes the taskbar button associated with the application. This utility particularly helps with protecting your privacy by hiding things like your browser with banking details up and someone walks in on you.

Pitaschio is a freeware which makes it convenient to use Microsoft Windows. Pitaschio includes a large number of useful functions mainly related to mouse operation and window management. This is a essential tool to use windows efficiently.

TopMenu is a functionality clone of PowerMenu, but designed to be compatible with Windows 7 and 64-bit systems.

TrayIt! - minimize to the system icon tray any program (Outlook Express, Notepad, Word, Internet Explorer, Sunbird, Thunderbird, Opera, OpenOffice etc.) and get more room in the Taskbar!

PS Tray Factory allows you to take a full control over icons in the system tray area of the taskbar. With PS Tray Factory you can: hide icons from system tray into menu, change the order of icons in the system tray (sort tray), restore tray icons after Explorer.exe crash and use custom icons.

AllTray is a program you can use on Unix-like systems such as GNU/Linux or FreeBSD running the X Window System to dock any application which doesn’t have a native tray icon into the system tray/notification area. AllTray works with many desktop environments and window managers, including Metacity on GNOME and KWin on KDE. The current release of AllTray is 0.7.2dev, and can be downloaded from Launchpad; the most recent stable release is 0.70 and is also available at that location

HideWin sits in the system tray and enables you to hide any top-level window with its popup tray menu or an ALT+letter hotkey that it assigns automatically. It appears to be abandonware, but it is only 13KB and still works.