To explore, communicate, and connect in Second Life, you'll need to download our 3D browsing software, or what we call the SL Viewer. : Live an entirely new life in a virtual world. The official Viewer, regular Viewer etc. Join Second Life, a free 3D virtual world where users can socialize, connect and create using free voice and text chat. It's not only fast and. Imprudence Experimental builds are posted for download on the blog. Second Life, free download.