Nudify is an excellent application that allows you to pixelate areas of your photos, to create an illusion of nude.

Upscribe is a simple email marketing tool. Send email newsletters, drip campaigns, and collect subscribers using embeddable opt-in forms.

A free platform for building simple, fully responsive one-page sites for pretty much anything. With over 4000 upvotes, Carrd is one the most popular products of all time on Product Hunt.