Auth.js - Alternatives & Competitors

Stack Auth is an open-source suite of tools for authentication and user management that enables developers to implement secure authentication in minutes with features like organizations & teams, permissions & RBAC, and third-party OAuth integration.

• Freemium
• From 49$

Next.js AI Startup Boilerplate is a comprehensive toolkit with pre-built components designed to help you launch your AI business quickly and efficiently. It includes everything needed to bootstrap your startup, with no coding required.

• Pay Once

Cntxtkit is a comprehensive NextJS & AI wrapper boilerplate that helps developers accelerate their web development process with pre-built integrations for payments, authentication, email, database, and styling solutions.

• Paid
• From 30$

Authelia delivers secure, scalable, and efficient identity and access management through multi-factor authentication and single sign-on for web applications.

• Free

DevPortfolioTemplates provides open source, professionally designed portfolio templates built with Next.js and modern web technologies for developers to showcase their work effectively.

• Other

MkSaaS empowers developers to launch AI-powered SaaS products rapidly using a feature-rich Next.js boilerplate, integrated with built-in AI, payments, authentication, and customizable themes.

• Pay Once

Authorizer is an open-source, self-hosted authentication and authorization platform that provides OAuth2 and OpenID Connect capabilities, allowing developers to maintain full control over user data in their preferred databases while offering multiple authentication methods and role-based access control.

• Free

AuthGPTs simplifies API security and SaaS deployment with a one-time purchase, offering tools for OAuth2, analytics, and payment integration. It is a cost-effective solution designed to streamline the launch of GPTs as complete SaaS products.

• Pay Once

TourGuide JS is a customizable, framework-agnostic JavaScript library designed for seamless user onboarding and guided tours within web applications.

• Free

useSAASkit provides a Next.js boilerplate with integrated AI capabilities, auth, billing, and marketing tools, enabling developers to launch AI SaaS applications quickly.

• Pay Once

server.js is a comprehensive Node.js server framework with built-in features like WebSocket support, modern ES7+ syntax, and Express compatibility, designed for simplicity and productivity in web development.

• Free

GetShipkit offers a free, open-source toolkit for developers to rapidly build, deploy, and scale production-ready SaaS applications using best practices and a modern tech stack.

• Free

Appliful is a NextJS-based web development toolkit that helps developers build production-ready SaaS applications with integrated AI capabilities, authentication, payments, and essential features, saving over 100 development hours.

• Pay Once

Nextbase is an AI-powered starter kit for building SaaS applications with pre-configured features like authentication, payments, and admin panels, designed to save development time and enhance productivity.

• Pay Once

NextJet offers a comprehensive, feature-rich Next.js SaaS boilerplate that streamlines the launch of web applications, enabling developers and startups to save time, increase productivity, and focus on business growth.

• Pay Once

Anon is a developer toolkit that enables AI agents to authenticate and take actions on behalf of users across websites without APIs, providing secure user-permissioned integrations.

• Contact for Pricing

Stytch provides comprehensive APIs and SDKs for authentication, authorization, security, and fraud prevention, enabling developers to focus on core product development.

• Freemium

SuperFast provides a production-ready Next.js boilerplate featuring built-in authentication, payments, pre-built UI components, SEO optimization, and AI-generated legal documents to help developers launch SaaS products quickly.

• Pay Once

FULL STACK AI lets you generate full-stack Next.js applications from simple AI prompts using a dedicated CLI. The generated apps include TypeScript, Tailwind, Prisma, Postgres, tRPC, authentication, Stripe, and Resend.

• Free

FACEIO offers secure, cross-browser facial recognition SDKs for passwordless authentication on websites and applications, featuring easy integration and liveness detection.

• Freemium
• From 29$

JS Syntax is an educational tool that provides interactive examples and explanations for modern JavaScript features, helping developers learn and understand ES6+ syntax effectively.

• Free

SSOJet enables SaaS companies, including AI startups, to quickly integrate Enterprise Single Sign-On (SSO) and Directory Sync (SCIM) without altering their existing authentication systems. Achieve enterprise readiness and enhance security in days.

• Free Trial
• From 99$

Supastarter is a Next.js SaaS starter kit designed to accelerate development by providing a ready-to-use boilerplate with features like authentication, payments, and AI integration support.

• Pay Once

Nextacular is an open-source starter kit built with modern full-stack technologies that helps developers build multi-tenant SaaS applications with pre-packaged features like authentication, billing, and database integration.

• Free

Launch Express accelerates SaaS development by offering a pre-built foundation with AI integration, authentication, payment processing, analytics, and responsive UI components, helping founders launch products in days instead of months.

• Pay Once

BuilderKit is a highly modular NextJS AI Boilerplate that allows developers to quickly ship AI applications. It includes pre-built apps, AI modules, and integrations, saving significant development effort.

• Pay Once

ProStack is a comprehensive Next.js 15 boilerplate that provides everything needed to launch SaaS applications quickly, including AI integrations, billing, authentication, and team management features.

• Pay Once

Trails JS is a web development platform offering articles and guidance on programming languages and technologies, helping developers make informed learning choices in 2023 and beyond.

• Other

Avatier is an AI-powered identity security platform that provides comprehensive identity and access management solutions including password management, single sign-on, lifecycle automation, and access governance for enterprises.

• Contact for Pricing

AI SDK is an open-source toolkit for TypeScript developers, providing a unified API to integrate AI capabilities into applications with ease. It supports multiple frameworks and enables dynamic, AI-powered user experiences.

• Free

Why Me offers a streamlined and secure login experience. Users can quickly access the platform using their existing GitHub, Google, or Twitter accounts.

• Free

Makerkit is a comprehensive SaaS starter kit for building and launching production-ready SaaS applications using React and Next.js, featuring AI integrations, robust authentication, billing, and extensive plugins.

• Pay Once

Zenlogin leverages AI to detect suspicious login attempts and alerts your users instantly, providing robust account security with easy integration for developers.

• Freemium
• From 199$

Nexty.dev is a production-ready, full-stack SaaS starter template for Next.js and Supabase, featuring integrated AI capabilities for rapid development of modern applications, including content, AI, and subscription services.

• Pay Once

AI Starter Kit is a full-stack SaaS template built with Next.js, offering plug-and-play AI integrations and essential features to help developers and startups launch AI-powered products faster.

• Pay Once

staarter.dev is a comprehensive Next.js SaaS template that accelerates development with pre-configured features like authentication, billing, and localization, designed to save developers 50+ hours on core setup.

• Pay Once

AI JS Rocks is a curated directory showcasing inspirational AI-powered JavaScript applications and projects.

• Free

NLKit offers open-source JavaScript libraries for developers to embed conversational AI assistants into web applications with various backend integrations.

• Freemium

Supanext is a Next.js and Supabase starter kit designed to help you quickly launch SaaS and AI applications, converting ideas into income.

• Pay Once

Keet is a YCombinator-backed platform that enables businesses to integrate with platforms lacking APIs or having complex authentication requirements, allowing automated data extraction and actions on behalf of customers.

• Freemium
• From 650$

Nexalio is an AI-powered platform that generates complete Next.js web applications with built-in features including authentication, database integration, payment processing, and more - all from your core business idea.

• Usage Based
• From 100$

MonoKit is a Turborepo toolkit designed to accelerate the development of production-ready applications. It features a professionally engineered Next.js and Fastify monorepo, with an AI-friendly code structure for enhanced code suggestions.

• Pay Once

marker.js is a JavaScript library that enables easy image annotation within web apps, offering customizable components and compatibility with any modern framework. Ideal for developers seeking flexible, interactive visual feedback tools.

• Freemium

MakeBlog AI provides a fast, hassle-free solution for setting up professional Next.js blogs with AI-generated content.

• Pay Once

Amplify Security automates code vulnerability remediation, providing instant fixes and significant cost savings for development teams.

• Freemium

nxtblog.ai is an AI-powered CMS and content generation platform specifically designed for NextJS websites, offering automated SEO optimization and blog content creation to help businesses improve their search engine rankings.

• Freemium
• From 10$

Open WebUI is a self-hosted AI interface that operates entirely offline and adapts to your individual workflow. It's extensible and designed for various applications.

• Free

AI Assistify is an AI-powered platform that enables users to build custom agents, automate workflows, and enhance productivity without coding. It offers access to over 50 AI models, enterprise-grade security, and 24/7 support.

• Paid
• From 49$

AgentForge is a comprehensive NextJS boilerplate platform that enables developers to build, deploy, and test AI applications with pre-built agents, customizable workflows, and integrated tools like LangChain, Langgraph, and OpenAI.

• Pay Once

TanStack provides headless, type-safe, and composable tools for building modern web applications, offering a comprehensive suite of libraries for data management, UI components, performance optimization, and developer tooling.

• Free