NetSend GUI and Winpopup LAN Messenger offer a command-line tool and DLL that enable instant messaging from your application or script. The DLL includes four functions for messaging functionality.

As an added bonus, you'll also find C++ and C# examples included. This makes it easy to get started with the DLL and implementing it into your own code. With these tools at your disposal, you can take advantage of instant messaging capabilities in no time.
Overall, if you're looking for a way to integrate messaging functionality into your application, then Net Send GUI and Winpopup LAN Messenger are definitely worth checking out. Give them a try today and see how they can benefit you!
Version 1.1: N/A