AllTray!

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.

FireTray is a Linux Mozilla addon that targets Mozilla Firefox, Thunderbird and SeaMonkey. It provides a system tray icon with much window handling functionality. For mail applications, the icon can show the number of unread or new messages. FireTray is very customizable.

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. »

4t Tray Minimizer is a lightweight but powerful window manager, which helps you to free up space on the desktop and the taskbar via the following actions:

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!

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.

Thunderbird-Tray is a system tray launcher tool for Mozilla Thunderbird.