tssTrayNotify 

tssTrayNotify in an ActiveX / COM component that places a clickable icon in the system tray, while providing a popup 'balloon' style tool tip that instantly provides visual feedback for your users.
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TrayMan 

Adds the icon of any application/file into the system tray. Easy use by drag & drop.
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Adios! Extreme Filesystem Cleaner 

Adios! Extreme File System Cleaner by Martin Beek - safely removes 150+ application- and Windows garbage files from your computer. Fully configurable. Analysis, (de-)selection and deletion stages. Uses fast low-level filesearch routines.
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AlphaXP 

AlphaXP is a powerful system enhancement that adds advanced transparency effects to any Windows 2000/XP computer. It has won many five-star awards for excellence and is regarded by thousands of users worldwide as the system enhancement of choice.
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AB Screen Locker 

A small utility that allows you to lock your screen. Any key combinations (like CTRL+ALT+DEL, ALT+TAB or CTRL+ESC) are disabled. If the system is restarted, this software will automatically load with Windows and your PC will be locked.
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Atomic Launch Tray 

Atomic Launch Tray is a program that sits in your system tray and allows you to add links to your favorite programs or websites and access them quickly from the system tray.
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