FusionAuth
FusionAuth is a modern, developer-focused identity and access management platform built to give you full control over your authentication stack. Whether you’re building a startup app or managing enterprise-scale infrastructure, FusionAuth delivers all the must-have features — from login and SSO to advanced protocols like OAuth2, OIDC, SAML, and WebAuthn — in a self-hostable or cloud-native package.
Designed with developers in mind, FusionAuth integrates seamlessly with any language, framework, or architecture. Every capability is API-first and built for extensibility, so you can tailor authentication workflows without getting locked into rigid, inflexible systems.
FusionAuth supports all the key use cases — user registration, multi-factor authentication (MFA), passwordless login, role-based access control, and more — while helping you stay compliant with GDPR, HIPAA, PCI, and other regulatory standards.
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Auth0
Auth0 takes a modern approach to Identity, providing secure access to any application, for any user. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation. Auth0 is part of Okta, The World’s Identity Company™.
Auth0 lets you quickly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control.
Authenticate users across all applications with a customized, secure, and standards-based single login. Universal Login connects users to a central authorization server. Credentials aren’t transferred across sources, which boosts security and protects against phishing and credential stuffing attacks. OAuth 2.0 recommends that only external user agents (like the browser) be used by native applications for authentication flows. Auth0’s Universal Login achieves this while enabling SSO.
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Create Next Startup
Create Next Startup is a Next.js startup boilerplate designed to expedite the development of versatile, data-integrating interfaces. It offers a curated set of interoperable components focused on single responsibility, minimal side effects, and minimal syntactic sugar, allowing developers to cherry-pick components that suit their specific needs. The basic setup includes Next.js, TailwindCSS, NextAuth.js, and React Email, with mobile support planned for future releases. The platform provides features such as custom record types, record overview, and detail pages, 15+ custom field types, custom field formulas, record change detection, and views. It supports various field types, including attachment, text, number, currency, percentage, long text, checkbox, date, single select, repeater, relationship, object, toggle, and JSON. Mail integration is available through Mailgun, with future support planned for Sendgrid, Mailjet, Postmark by ActiveCampaign, and Resend.
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