Proxima Nova Soft family (Mark Simonson fonts) contains 4 fonts.
Proxima Nova Soft is a rounded version of Proxima Nova. It was designed for use as a webfont in the header text throughout the MyFonts site. It has been specially optimized for web use. After getting many requests and queries about it, I made it available for purchase through all my usual font sellers. It doesn’t yet have all the weights and styles of Proxima Nova, or its extensive language support, but I intend to add those features as soon as I can.