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.

Auth0 is an identity and access management (IAM) platform designed to simplify authentication and authorization for applications. It provides a flexible solution that allows developers to implement secure login systems without having to build them from the ground up. Auth0 supports various authentication methods, including username-password credentials, social logins (like Google, Facebook, and GitHub), enterprise identity providers (such as Active Directory and SAML-based systems), and passwordless options. The platform is highly adaptable, offering over 30 software development kits (SDKs) that cater to a wide range of languages and frameworks—JavaScript, Python, .NET, iOS, Android, and more. This makes integration straightforward regardless of the tech stack. Beyond basic authentication, Auth0 offers advanced features like multi-factor authentication (MFA), single sign-on (SSO), and fine-grained authorization. These tools enable organizations to enforce complex access control policies, supporting both role-based (RBAC) and attribute-based (ABAC) models. Auth0 also addresses enterprise needs through features like user provisioning, directory synchronization, and support for B2B, B2C, and B2E use cases. It’s designed with scalability in mind, making it suitable for both startups and large enterprises. The platform’s extensibility allows developers to customize authentication flows, implement rules for conditional access, and integrate third-party services. Since its acquisition by Okta, Auth0 operates as a product unit under the Okta umbrella, complementing Okta’s broader suite of identity solutions while maintaining a developer-first focus. This combination brings together Okta’s enterprise-grade security with Auth0’s developer-centric approach, offering a comprehensive solution for modern identity challenges.

Clerk is a comprehensive user management and authentication platform designed to streamline how developers handle user accounts within web and mobile applications. It offers a suite of embeddable UI components—such as <SignIn/>, <SignUp/>, <UserButton/>, and <UserProfile/>—that integrate seamlessly into your application without redirecting users off-site. These components are fully customizable to match your brand, making the user experience cohesive and frictionless. Under the hood, Clerk provides a robust API and SDKs compatible with modern frameworks like Next.js, Remix, React, and Expo. It handles the entire authentication lifecycle, supporting multifactor authentication (MFA), session management, passwordless sign-in (via magic links or one-time passcodes), and traditional password-based methods with breach detection. The platform also integrates social sign-on (SSO) with over 20 providers, enabling quick user onboarding while adhering to security best practices. Clerk’s security posture includes SOC 2 Type 2 certification and CCPA compliance, with continuous third-party audits and penetration testing. Fraud prevention measures, like disposable email blocking and bot detection powered by machine learning, are built-in to reduce spam and abusive sign-ups. For B2B SaaS applications, Clerk provides advanced multi-tenancy features, enabling organization-based user management with custom roles, permissions, auto-join functionality based on email domains, and invitation systems—all accessible through both code and an admin dashboard. Developers benefit from rapid integration, significantly reducing the time spent on building authentication systems from scratch. Clerk acts as the single source of truth for user data and integrates seamlessly with popular backend services like Supabase, Firebase, and Convex. With free access for up to 10,000 monthly active users, it’s positioned as a scalable solution that grows with your application’s needs.

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.

Stytch provides a suite of tools designed to simplify authentication, authorization, and security for web and mobile applications. If you're developing an app and need a way for users to log in—whether with passwords, passkeys, or entirely passwordless methods—Stytch offers APIs and SDKs that handle these complexities. Their focus is on making authentication seamless for both developers and end-users while ensuring high security standards. For businesses, particularly B2B SaaS companies, Stytch enables advanced features like multi-tenancy, role-based access control (RBAC), and single sign-on (SSO). They provide an embeddable admin portal, allowing enterprise customers to manage their own authentication configurations, organizational settings, and integrations with identity providers—without constant developer involvement. Stytch places a strong emphasis on scalability and flexibility. Their tools are designed to “just work” across a range of use cases, from simple consumer apps to complex enterprise platforms. Developers can choose how much of the authentication flow they want to control—using pre-built UI components for quick implementation or leveraging headless SDKs and backend APIs for a fully customized experience. Security and fraud prevention are also core to Stytch’s offering. They provide real-time bot detection, device-aware multi-factor authentication, and intelligent rate limiting to protect against credential stuffing and other forms of account abuse. Their infrastructure ensures that login codes and authentication requests are delivered reliably, even when SMS or email providers fail. Stytch supports a broad range of programming languages and frameworks, including Python, Node.js, Java, React, and iOS, making integration into existing tech stacks straightforward. Their platform is designed for developers who want to build secure, user-friendly authentication systems without reinventing the wheel.

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.

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.

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.

Clubistry is the easy solution for clubs seeking to make running a club as fun as being in a club. Effortlessly handle membership management, online payments, website building, and content management in one unified platform. Promote news and events, collect user info with custom forms, and process new membership applications online in a snap.

Brackets.app revolutionizes tournament management, allowing anyone to generate and customize tournament brackets with ease. Effortlessly invite players and manage the entire event online, from initial setup to the final match. The app simplifies score entry and automatically calculates and updates leaderboards and standings in real-time, ensuring everyone stays informed. Its intuitive interface is designed for both casual and professional organizers, providing a smooth, user-friendly experience. Brackets.app is the perfect tool for any competition, combining convenience and efficiency to simplify your tournament organization needs. Say goodbye to manual bracket management and embrace the future with Brackets.app

📱 Coaches and Personal Trainers: Simplify Your Business Today! Are you tired of managing clients, schedules, and payments? BULK can help you: - Effortless Session Scheduling: No more double bookings. - Instant Client Messaging: Keep all communication in one place. - Secure Payment Processing: Get paid on time, every time. - Content Integration: Easily share Google Docs, Slides, Notion, Zoom links, and more. All this from the convenience of your phone. Available on iOS and Android. Don't overcomplicate this process. Don't use systems with tons of useless features that just bog your progress! Save time, increase efficiency, and watch your business grow! 🎉 Start Your 14-Day FREE TRIAL Now! 🎉

Tired of manually creating each certificate and wasting hours on repetitive tasks? Certifast is here to simplify your life! Designed for anyone who needs to generate certificates quickly and efficiently, Certifast is your go-to solution. Here's what makes Certifast stand out: - Bulk Creation in Seconds: Generate thousands of certificates at once, saving you time and effort. - Easy Customization: Personalize each certificate with names, grades, or unique numbers effortlessly. - User-Friendly Interface: No design skills needed—navigate through Certifast with ease and choose from a variety of templates. - High-Quality Results: Every certificate is produced in high resolution, perfect for printing or digital use. - Seamless Data Integration: Import data from CSV files to automatically fill in certificate details and reduce errors. - Versatile Application: Ideal for schools, businesses, events, and more, Certifast adapts to any setting where certificates are needed. Certifast is more than just a certificate maker—it's a time-saving tool designed to enhance your productivity. Say goodbye to manual certificate creation and hello to the simplicity of Certifast. Try Certifast today with our free trial and see how easy certificate creation can be!

Schedles is an all-in-one social media management platform designed specifically for content creators looking to amplify their online presence. Packed with cutting-edge features such as advanced post scheduling, AI-driven content generation, and seamless cross-platform publishing to Threads, Instagram, TikTok, and LinkedIn, Schedles simplifies your workflow, freeing you up to focus on what you do best—creating captivating content. Our user-friendly interface allows you to effortlessly plan and manage your content calendar, ensuring that you never miss an opportunity to engage your audience. With our AI-powered tools, you can quickly generate innovative ideas and optimize your posts for maximum visibility and interaction, helping you achieve significant growth across all your social media channels. Whether you're a solo creator or part of a collaborative team, Schedles is engineered to enhance your productivity and fine-tune your social media strategy, empowering you to connect with your audience more effectively. Begin your journey toward a more organized, impactful, and successful online presence with Schedles today!

CasperPractice helps aspiring health students prepare for the Casper test for a fraction of the cost of tutoring. It uses AI to generate practice questions and review students' answers, including video answers. Key Features - Question bank: 150+ realistic Casper-style questions - Question simulator: an environment that simulates a real Casper question, including a timer. - Answer reviews: detailed feedback and a grade on the student's submitted answer. Benefits - Effective preparation: students can prepare effectively, increasing their chances of getting a good score on the Casper test. - Affordable: CasperPractice is a fraction of the cost of traditional tutoring. Use Case A student would use CasperPractice to help them prepare for the Casper test.

Italki is a platform connecting language teachers, mostly native speakers, with students. You can book, pay, and schedule your classes directly through their website. The classes are one on one, just you and the teacher, and conducted over a video call. I used Italki successfully before going to Thailand for the first time. My wife who is Thai gave me an Italki gift card. There are plenty of teachers to chose from and the rates are affordable. You'll pay anywhere from $10 to about $20 for a class.

Breathworx is an on-demand breathwork service designed for stress relief, decision clarity, and a happier mood, with guaranteed results in a single session—even for those who “can’t meditate.” Folks who’ve tried it say they: Feel less “in their head” generally Feel an overwhelming sense of gratitude and clarity Feel more confident, calm, & authentic in social situations Get clearer answers in big decision making Relieve stress, anxiety, heartbreak, loss, and depression Have more reliable stress coping mechanisms Release the “emotional gunk” that builds in them Feel more grounded and in touch with their bodies Are less reactive in difficult situations The classes primarily use guided meditations and Circular Breathwork, a simple technique involving 2 breaths in (belly, then chest) and 1 breath out, all through the mouth. Also known as 2-part breathwork, holotropic breathwork, or triangle breathing, this method yields transformative results in a short amount of time. Breathworx offers both full-length 40-60 minute sessions and shorter 10-20 minute versions, accessible on any browser or device, anytime. Whether you use this "cheat code" once a week, once a month, or daily during particularly hard times, it's all up to you. Many people find that even a single class is worth more than years of therapy, where one session can cost more than a yearly Breathworx membership. In fact, if you take just one full class a year, you’ll likely value the benefits beyond the yearly subscription price. Most in-person classes have about 30 minutes of breathing wrapped in some meditation or gratitude practice, making for about 45 minutes total. Breathworx offers similar formats, as well as shorter versions, ensuring there's a session that fits your schedule and needs. Whether you're looking to relieve stress, gain clarity, or simply add a powerful tool to your wellness toolkit, Breathworx is designed to be as transformational, enjoyable, and meaningful as possible.