Better-Auth — Runs On Everything

§ 01 — Mental Picture

One core, many wrappers.

Framework-agnostic by design

mindmap
  root)Better-Auth(
    Full-Stack
      ::icon(fa fa-cube)
      Next.js
      TanStack Start
      React Router 7
      SvelteKit
      Nuxt
      Astro
      SolidStart
      Waku
    Backend
      ::icon(fa fa-server)
      Express
      Hono
      Fastify
      Elysia
      NestJS
      Nitro
    Platform
      ::icon(fa fa-mobile)
      Electron
      Expo
      Convex
      Encore
      Lynx

§ 02 — The Full Roster

Twenty supported, by name.

Full-Stack & Meta Frameworks

8 supported

TanStack Start

your stack

Next.js

App + Pages

React Router 7

ex-Remix

SvelteKit

Svelte

Nuxt

Vue

Astro

SSG + dynamic

SolidStart

SolidJS

Waku

minimal RSC

Backend & API Frameworks

6 supported

Hono

edge / web

Express

Node.js classic

Fastify

high perf

Elysia

Bun-native

NestJS

enterprise

Nitro

universal

Platforms & Runtimes

5 supported

Expo

React Native

Electron

desktop

Convex

BaaS

Encore

TS backend

Lynx

cross-platform

§ 03 — Databases & ORMs

Bring your own data layer.

Native Database & ORM Adapters

7 + generic

PostgreSQL

your pick

MySQL

relational

SQLite

embedded

MS SQL

enterprise

MongoDB

document

Drizzle

ORM

Prisma

ORM

§ 04 — Same Glue, Every Framework

Look at all four. Spot the difference.

TanStack Start your stack

import { createAPIFileRoute }
  from '@tanstack/start/api'
import { auth } from '~/lib/auth'

export const Route = createAPIFileRoute(
  '/api/auth/$'
)({
  GET:  ({ request }) => auth.handler(request),
  POST: ({ request }) => auth.handler(request),
})

Next.js App Router

import { auth } from '@/lib/auth'
import { toNextJsHandler }
  from 'better-auth/next-js'

export const { GET, POST } =
  toNextJsHandler(auth.handler)

// app/api/auth/[...all]/route.ts

Hono edge

import { Hono } from 'hono'
import { auth } from './lib/auth'

const app = new Hono()

app.on(['POST', 'GET'],
  '/api/auth/*',
  (c) => auth.handler(c.req.raw)
)

Express Node.js

import express from 'express'
import { auth } from './lib/auth'
import { toNodeHandler }
  from 'better-auth/node'

const app = express()
app.all('/api/auth/*',
  toNodeHandler(auth)
)

notice
Every one of these is 5–8 lines. The only thing that changes is how the framework declares a route.

§ 05 — Switching Frameworks Later

Five lines change. Everything else stays.

What changes

Route file

What changes

UI components

⇄

Stays the same

auth.ts config

Stays the same

DB schema

Stays the same

User pool

Stays the same

Sessions

Site #14 needs Astro? Site #22 needs Hono on the edge? Same auth. Rewrite ~5 lines and ship.

§ 06 — At a Glance

The breadth, in numbers.

19+

Frameworks &
platforms

7+

Databases &
ORMs

~5lines

Glue code per
framework

0

Vendor or framework
lock-in

Pick the framework. Keep the auth.

One library. Every stack. No rewrites later.