Make responsive websites without the guesswork.
A responsive web browser for Mac.Download for Mac (Beta)
Preview your website across as many sizes as you want
See interactions like scrolling, clicking, and form inputs responsively
Easily screenshot individual screens or all at once
Oh yeah, and it's free and open-source.
Reflex is a free, open-source application currently for Mac. It is designed to reduce the chaos of building responsive sites and products.
We believe in empowering creators to make better web experiences for everyone. Reflex is just getting started.
Made by web creators & designers, for web creators.