Sim Daltonism - From the perspective of a color blind person, some colors are impossible to distinguish.
Colour Blindness Simulator - Use our Colour Blindness Simulator to reveal how your images may appear to users with a variety of...
Color.review - Colors that look and work great for everyone.
Stark - Contrast check and color blindness simulator for Sketch.
Epilepsy Blocker - Block flashing GIFs that may cause an epileptic seizure
accessiBe - Making websites accessible to people with disabilities