The biggest advantage of Cognito is that it's a part of the AWS ecosystem and integrates well with other AWS services. The free tier comes with 50,000 MAUs and the price for each additional MAU starts at $0.0055/month and goes down to as low as $0.0025/month as you scale to tens of millions of users. It integrated with four federated identity providers - your users can sign up with Facebook, Google, Apple and Amazon.

Google's Firebase is an entire app development platform that's packed with features.It comes with storage, cloud functions, monitoring and, of course, user authentication. The free tier comes with 50,000 MAUs. Beyond that pricing start at $0.0055/MAU and goes down to as low as $0.0025/MAU as you scale to millions of users. Firebase authentication supports email and password auth, phone auth, magic links, two-factor authentication and social identity providers - mainly Google, Google Play Games, Facebook, Apple, Microsoft, Twitter, GitHub and OAuth access tokens.

Clerk is a comprehensive authentication and user management platform. It comes with embeddable UIs, APIs and admin dashboards for user management. Clerk offers official SDKs for Next.js, React, JavaScript, Node.js, Remix, Go, Gatsby, and Ruby / Rails. There are many more community SDKs for other frameworks and languages. They have a free tier of 10,000 MAUs and a $25/month Pro tier with $0.02/MAU. Enhanced authentication, with SMS auth, device tracking and revocation, simultaneous sessions and SAML authentication costs additional $100/month. Admin add-on, with user impersonation and enhanced roles is another $100/month.

Supabase is the open-source alternative to Firebase. Like Firebase, it's a complete app development platform with user authentication, cloud functions, APIs, Postgres database, storage, vector embeddings, and other features. Supabase projects come with PostgreSQL's policy engine for fine-grained user access rules. It has social login integrations with Google, Facebook, GitHub, Azure (Microsoft), Gitlab, Twitter, Discord, and many more. They offer a customizable authentication component for React. Phone login and MFA can be added through third-party SMS providers such as Twilio or Bird. The free tier comes with 50,000 monthly active users. The Pro plan, at $25/month, comes with 100,000 MAUs and $0.00325/MAU beyond that.

They market themselves as the leading Auth0 alternative. There is a free starter plan with up to 25 organizations and 1000 members. Additional users costs $0.05 per monthly active user.

Kinde has a generous free plan with up to 10,500 MAU free of charge. Their Pro plan costs $25/month and the price for each additional MAU over 10,500 is $0.0175.

Ory is an API-first identity manager. They offer authentication, analytics, access control, machine-to-machine authentication and more. They have SDKs for the major languages: - Dart - .NET - Elixir - Go - Java - JavaScript - PHP - Python - Ruby - Rust Unfortunately, they don't offer a free tier. Pricing starts at $29/month and includes 1,000 daily active users. Then it's $30 / 1,000 additional DAUs.

Appwrite is an open-source platform for building scalable applications. It comes with authentication, databases, storage, and functions. It's basically a complete development platform. They have an extremely generous free plan with 75,000 MAUs free of charge and their Pro plan is only $15/month. Appwrite offers email and password login, phone auth, magic links, email OTP, anonymous login, JWT login, SSR login, custom tokens, and two-factor authentication.

Formerly known as NextAuth. It's is an open-source authentication library originally built for NextJS. Auth.js is free to use and comes with over 80 integrations for various third-party identity providers such as Google, Facebook, Auth0, Apple etc. You can use it with your own database if you choose to. It works with MySQL, Postgres, MSSQL and MongoDB. Auth.js is compatible with Next.js, SvelteKit and SolidStart as of March 2024.

Keycloak is an open source identity and access management solution. It supports Keycloak single-sign-on and OpenID Connect or SAML 2.0 Identity Providers (Google, Facebook, GitHub etc).

Gluu offers various authentication solutions based on open-source software. There is a self-hosted solution, a managed solution, and a free fully open-source solution based on the Linux Foundation Janssen Project.

Okta is an identity provider for organizations. It offers enterprise solutions for managing workforce and employee identities. It's HIPAA BAA and PCI compliant.

GoPasswordless is an authentication service and SDK that focuses on enabling passwordless authentication flows in web apps.

Authenticate customers with WhatsApp, SMS, Email, Biometrics, and more, with a 98% conversion rate on signup and sign-in.

Owlbot offers a cutting-edge AI-powered chatbot service that seamlessly integrates with your data to provide instant responses for you, your customers, or your team. Deploying a tailor-made AI chatbot with Owlbot is straightforward, enhancing both customer service and the efficiency of data analysis with minimal effort. Our AI chatbot is capable of handling 90% of inquiries from customers, clients, or employees effortlessly (>90 languages supported). It can import data from a variety of sources, including documents, markdown files, and webpages, ensuring that you receive precise, immediate answers. Additionally, you can connect the chatbot to your internal tools to access private data in real-time and provide timely responses. You can choose from 12 different large language models (LLMs), such as Mistral, OpenAI, and Anthropic, to find the option that best fits your needs. Owlbot also captures the details of interested visitors, helping you compile a list of potential leads and expand your business opportunities.

StartKit.AI is a boilerplate designed to speed up the development of AI projects. It offers pre-built REST API routes for all common AI tasks: chat, images, long-form text, speech-to-text, text-to-speech, translations, and moderation. As well as more complex integrations, such as RAG, web-crawling, vector embeddings, and much more! It also comes with user management and API limit management features, along with fully detailed documentation covering all the provided code. Upon purchase, customers receive access to the complete StartKit.AI GitHub repository where they can download, customize, and receive updates on the full code base. 6 demo apps are included in the code base, providing examples on how to create your own ChatGPT clone, PDF analysis tool, blog-post creator, and more. The ideal starting off point for building your own app!

Ahrefs has a generous free tier that allows you to view your domain ranking, track backlinks, view organic keywords, analyze page and backlink health, check out competitors and many more. Once you sign up and connect your domain, you'll get weekly reports on your SEO progress.

Truelist is a subscription-based email verification platform that provides unlimited email validation for sales and marketing lists. It’s tailored for sales and marketing professionals as well as developers, offering one-click integrations with popular platforms to simplify list imports. With no need to purchase credits, teams can validate lists affordably and efficiently. Additionally, Truelist offers free single email validation, making it versatile for both bulk and individual verifications. By keeping lists clean, it boosts engagement and strengthens sender reputation, essential for effective email outreach.

A directory of the products that have under $1000 MRR (monthly recurring revenue). You need to pay to submit your product.

SaaSBoilerplates.dev is a curated directory that showcases a wide range of SaaS boilerplates, starter kits, and frameworks to help developers quickly launch their SaaS projects. The website features a carefully selected collection of tools and resources that cover various aspects of SaaS development, from authentication and payments to user management and deployment. Key Features 1. Extensive collection: SaaSBoilerplates.dev offers a comprehensive selection of SaaS boilerplates, catering to different frameworks, tech stacks, and development needs. 2. Curated by hand: The boilerplates are hand-picked and reviewed by a human to ensure quality, reliability, and relevance. No scraping, no AI-generated crap. 3. Detailed information: Each boilerplate listing includes a description, pricing, and key features to help readers make informed decisions. 4. Variety of use cases: The boilerplates cover a wide range of SaaS applications, including marketplaces, AI tools, landing pages, and more. Benefits 1. Time-saving: By leveraging pre-built boilerplates, developers can significantly reduce the time and effort required to set up the foundation of their SaaS project. 2. Cost-effective: Using boilerplates can help lower development costs by providing a solid starting point and reducing the need for custom development. 3. Scalability: Many boilerplates are designed with scalability in mind, making it easier to grow and expand the SaaS application as it gains traction. 4. Reduced technical debt: By using well-tested and maintained boilerplates, developers can minimise the risk of technical debt and ensure the long-term stability of their SaaS application. By leveraging the resources available on SaaSBoilerplates.dev, users can focus on building their core product features and bringing their SaaS ideas to life faster than ever before.