With this component you can read and write the windows Registry and a find to check if a key
With TEnvironment component you can easily read values of all Windows environment variables even in design mode.
The TscvSysTray component places an icon in the Win95 System Tray (lower right corner of taskbar). Mouse events are detected, and returned to the TscvSysTray object, giving you easy access to these messages. When the user clicks your system tray icon
TNRegView is a TTreeView descendant, which lets you easily browse the Windows Registry, looking for keys and values. It uses recursive procedures to find out every key. Since the source code is provided, you may use it as a basis to more complex task
A TComboBox descendant, inherits all properties from Combo Boxes, and implements a new method: Detect, which searches for the Domain Name Server configured to resolve Internet Addresses on the running machine. In that sense, itls equivalent to run
Maybe your application can only run under Windows NT? Or it crushes when it meet NT? Then you should determine what platform users are running. The TWinVersion is a simple component used to detect running Windows' type and version.
This component give to you full design-time and run-time control on process creating or opening memory mapped file by using properties or component editor......
Component for copying/pasting data in custom formats to/from the
This component checks if some applications running when your application running. If Looked applications running, OnApplicationFound event occure otherwise OnApplicationNotFound event occure.
Shell Protect is virus protection system that can hook ShellExecute functions (that functions is used by Explorer, FAR, Windows Commander, etc to execute file) and it redirects it to its own library to detect if file is infected. | 
