Color Oracle is described as 'Colorblindness simulator for Window, Mac and Linux. It takes the guesswork out of designing for color blindness by showing you in real time what people with common color vision impairments will see' and is an app in the office & productivity category. There are five alternatives to Color Oracle for Mac, Windows, Web-based and Linux. The best Color Oracle alternative is DaltonLens, which is both free and Open Source. Other great apps like Color Oracle are Sim Daltonism, RGBlind.com, Color Blindness Simulator and Coloursimulations.