nfsButterflies - Version 1.1 nfsButterflies is a free screensaver featuring spring nature: flowers and flying butterflies. It is a very nice and relaxing screensaver. No sound effects, only butterflies fly and remind you about the summer. Free screensavers. No spyware, no adware, virus-free. It is safe to install and run.NewFreeScreensavers.com offers screensavers of nature, natural phenomena, screensavers showing time, and others. The screensavers from http://www.newfreescreensavers.com are initially designed to prevent damage to CRTs and plasma computer monitors by blanking the screen or filling it with moving images or patterns when the computer is not in use. The screensaver starts automatically if your computer is idle for a specified amount of time. Free screensavers. No spyware, no adware, virus-free. It's safe to install and run.