Notifu, a free open source pop-up balloon utility Notifu is a tool that displays a yellow pop-up balloon in the system notification area, better known as the tray. It is free and open source, give it a try! Notifu uses the same API that Windows uses to show pop-up balloons. You see them when you add a device, such as a wireless network or a USB drive, or when certain system events occur, say, every second Tuesday of the month... Notifu displays a message. So in its simplest form, the message is the only required arguments. Use the /m switch

notifu /m "This is a simple Notifu message." submitter notes: to launch nonblocking way, use start notifu.exe <params>