Ask HN: What SaaS applications have a great UI?

(shameless plug) we are trying to have a good looking design at http://prisync.com.

Typeform is taking over forms and surveys based mainly on their awesome UX.

Basecamp 3, looks awedosome

Agreed! They've been very consistent over the years. I think they also have a unique, playful personality that's apparent across the product. Their choice of fonts, icons, colors and illustrations are kinda refreshing.

Agreed, latest iteration is very polished and oozes personality.