TestBox - Test drive your software options before you buy

accessiBe - Making websites accessible to people with disabilities

Appsolite - Evaluating software is laborious, time consuming and riddled with a lot of guess-work.

Sim Daltonism - From the perspective of a color blind person, some colors are impossible to distinguish.

Hunter TechLookup - Create lists of websites by technology for free

Coblis - If you are not suffering from a color vision deficiency it is very hard to imagine how it looks...