Security and privacy
Userbase alternatives
3 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.
The projects
smallbets/userbasethe vendor’s own source★2,338 GitHub starsMIT licenceCreate secure and private web apps using only static JavaScript, HTML, and CSS.Open on GitHub ↗logto-io/logto★14,319 GitHub starsMPL-2.0 licenceAuthentication and authorization server supporting OIDC/OAuth2, multi-tenancy, SSO, and RBAC.Open on GitHub ↗authgear/authgear-server★1,960 GitHub starsApache-2.0 licenceSelf‑hosted authentication server with passkeys, SSO, MFA, and passwordless login.Open on GitHub ↗
What you give up either way
- Hosted uptime, SLA and managed scaling
- Vendor-run maintenance, security patching, and support
- One-click Stripe + billing convenience and hosted backups
- Operational telemetry, analytics, and team-managed incident response
An open-source project doing the core job proves a replacement is possible. It does not prove it matches Userbase, and it does not prove anyone has run it for a month. How we decide.