CrossOver is a multi-platform (Windows, Linux, Android) app that allows you to choose a crosshair for your shooting games, potentially providing you with an edge over other players.
Once run, it will place a customizable crosshair overlay above any application window. Improve your aim and gain a competitive advantage with a colored crosshair marking a specific area of your screen. Since it is always on top, you will have a screen position to calibrate your shots. It can be customized into many different crosshair types, colors, opacity, and sizes to suit your playing game. You can drag it into your favored shooting position or double-click the bullseye for the center.
CrossOver may not work for all games, so you may need to switch from fullscreen to borderless fullscreen mode to remedy that deficiency but other than that, it works as intended. Also, CrossOver might be a violation in some online games.
CrossOver is a handy tool for giving you a visual on-screen reference point to improve your shooting accuracy.