> For the complete documentation index, see [llms.txt](https://docs.alphi.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.alphi.dev/authentication.md).

# Authentication

- [Overview](https://docs.alphi.dev/authentication/overview.md): Securing flows with third-party authentication services
- [Outseta](https://docs.alphi.dev/authentication/outseta.md): All-in-one membership software
- [Memberstack](https://docs.alphi.dev/authentication/memberstack.md): Authentication & payments for companies who love Webflow, Stripe, & React.
- [Firebase](https://docs.alphi.dev/authentication/firebase.md): Coming soon