You could have downloaded Spranto 2.8 from our software library for free. The default filename for the program's installer is Spranto.exe. The most popular versions of the program 2.8, 2.6 and 2.5. Spranto lies within Communication Tools, more precisely Instant messaging. The actual developer of the software is Spranto Australia Pty Ltd.
From the developer:
Spranto is a powerful video conferencing client capable of sending and receiving full 1080p HD video and content. Spranto utilizes the industry standard H.323 protocol, so you can call Cisco, Polycom, Lifesize, Tandberg, Codian, and Radvision devices, including MCUs, conference room and class room endpoints.
You may want to check out more software, such as WinPopup Speak, LAN Chat or Air Messenger Pro, which might be similar to Spranto.