OpenBVE, decended from BVE2 4, allows you to drive your choice of Train Route from a selection of many from around the world. The majority of routes and trains have to be downloaded and installed by users in potentially obscure ways that are all but easy and intuitive. With managed add-ons, an official add-on directory was added which the game can directly query to show what is available to download.
SkyChart III is a planetarium and telescope control program that shows the sky from any location, past or future, on Earth or beyond.
