WinCompose is a compose key for Windows that enables you to write special characters via simple and selectable key combinations.
Once installed, WinCompose resides in the systray, ready for deployment and use. A simple right-click will bring up the menu, which includes options for starting/disabling, access to all the sequences, and general use settings like selecting which compose key (Caps, Insert, Scroll Lock, etc.) will be used to create your special characters. You have access to a comprehensive listing of all characters available with an accompanying detail display panel. This listing has details, including which sequence to use, character results, and the Unicode. It also includes a filtered search option to make finding the characters. etc., easier.
WinCompose supports the standard Compose file format. It also provides over 1700 compose rules from the Xorg and dotXCompose projects. It also allows you to add custom rules by creating a file named .XCompose or .XCompose.txt in your %USERPROFILE% directory. A restart is required for the changes to take hold.