Authkit

authkit.com/

AuthKit is a pre-built login interface, developed jointly by WorkOS and Radix UI, that developers drop into an app to handle sign-in flows (SSO, MFA, social login, magic links) instead of building the UI from scratch, with branding fully customizable down to color, logo, corner radius, and button styling. The homepage opens with three working interactive login-box examples under different fictional app names rather than static screenshots, letting a visitor toggle light and dark mode on each. It explicitly credits its component foundation by name, noting Radix is “used by Vercel, Linear, Supabase, and thousands of others,” and includes two named customer testimonials describing specific technical tradeoffs (UI control, freed engineering time) rather than general praise.

Category

Developer Tools

Style

DarkMinimal

Stack

Next.js

Fonts

Untitled SansaeonikPro

Copy CSS

Palette

Copy allCopy CSS vars

Meta title

AuthKit by WorkOS

Sections

4

Updated

Sep 22, 2026