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Open-source auth and user platform · by Hexclave

Hexclave (formerly Stack Auth)

Open-source auth and user management for SaaS, formerly Stack Auth, with teams, RBAC, payments and analytics; free to 10,000 users hosted, or self-hosted.

Visit stack-auth.com ↗ Alternatives Open source Open source Self-hostable EU region
Hexclave (formerly Stack Auth) homepage
§1

Overview

Hexclave, previously called Stack Auth, is an open-source platform for user-facing building blocks in SaaS apps: authentication, teams, role-based access control, payments, emails, analytics, webhooks, API keys and secure data vaults. Authentication covers email and social login, magic links, passkeys, custom branding and custom OIDC providers.

It is fully self-hostable: the server is licensed AGPLv3 and client SDKs are MIT, with commercial licences for teams that cannot use AGPL. It can import users from Clerk, Auth0, Firebase Auth and Supabase Auth without forcing password resets.

Hosted pricing is flat and based on total user accounts. Free covers 10,000 users with one dashboard admin and 1,000 emails a month. Team is $49 a month for 50,000 users, four admins and 25,000 emails, and Growth is $299 a month for unlimited users with an SLA. Extra admins are $29 a month each. Because inactive accounts count, delete stale accounts or budget for the next tier.

§2

Pricing and plans

Free tier

Up to 10,000 auth users (total accounts), 1 dashboard admin, 1,000 emails a month, email, OAuth and magic links, 100K analytics events, community support; self-hosting is free

At the limit Not stated The vendor does not say what happens at the limit, or we have not found it yet.

Plan Price What you get
Self-hosted Free AGPLv3 server; commercial licence available
Free Free 10,000 auth users, 1 admin, 1,000 emails/mo
Team $49/mo 50,000 users, 4 admins (+$29 each), 25,000 emails, priority support
Growth $299/mo Unlimited users, 1M analytics events, premium support and SLA
Enterprise Custom HIPAA, SOC 2 Type II, custom DPA or on-prem on request

Limits count every user account in a project, including inactive ones, rather than monthly actives. HIPAA, SOC 2 Type II and custom DPAs are offered through custom enterprise contracts; they are not listed as certifications here because the page frames them as contract options. Hosting regions for the cloud service were not stated; euRegion is true because the stack can be self-hosted anywhere. The product was renamed from Stack Auth to Hexclave; the old domain still serves the site.

Source: stack-auth.com/pricing · prices as published, excluding tax.

§3

What it does

Auth methods
Email, social OAuth, magic links, passkeys and custom OIDC providers.
Teams and RBAC
Team-based multi-tenancy with role-based permissions.
Payments and emails
Payment and transactional email building blocks alongside auth; 1,000 to 25,000 emails a month included.
Product analytics
Analytics events and session replays included in each plan.
Migration imports
Imports from Clerk, Auth0, Firebase Auth and Supabase Auth without password resets.
Self-hosting
Entire stack runnable on your own infrastructure.
§4

Strengths and limitations

Strengths

  • Open source and fully self-hostable
  • Flat pricing with no per-MAU charges
  • Auth, teams, payments and analytics in one project
  • Imports users from major competitors

Limitations

  • Plan limits count all user accounts, including inactive ones
  • Server licence is AGPLv3, which some companies cannot use without a commercial licence
  • SAML SSO is not listed among features
  • Compliance options only through custom contracts
§5

Who it suits

Good for

  • Side projects and early SaaS wanting open-source hosted auth
  • Teams wanting auth plus payments and analytics together
  • Projects migrating off Clerk, Auth0 or Firebase Auth

Look elsewhere if

  • B2B apps needing SAML enterprise SSO
  • Consumer apps with many dormant accounts on the free tier
§6

Alternatives to Hexclave (formerly Stack Auth)

Tool From Free option Stages
Authgear Open-source CIAM (cloud, VPC or one-time self-host licence)
$50/mo Free tier
Hanko Open-source passkey-first auth
$29/mo Free tier
Supabase Managed Postgres backend platform
$25/mo Free tier
Clerk Hosted auth and user management
$25/mo Free tier
Appwrite Cloud Open-source backend-as-a-service (database, auth, storage, functions, hosting)
$25/mo Free tier
Nhost Postgres + GraphQL backend platform
$25/mo Free tier

All auth and identity →

§7

Questions

Is Stack Auth the same as Hexclave?

Yes. The stack-auth.com site now presents the product as Hexclave.

Is Hexclave free?

The hosted Free plan covers up to 10,000 user accounts, and the open-source stack can be self-hosted for free.

How does Hexclave count users?

Every user account in a project counts, including inactive users.

What licence is Hexclave under?

The server is AGPLv3 and client SDKs are MIT; commercial licences are available.

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