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.

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.

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.

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.

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.

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These days, AI directories are popping up all over the place. You’ve got huge lists—like that GitHub one —best-of-ai/ai-directories—and tons of sites trying to round up every AI tool under the sun. It’s a lot, right? Problem is, most of them are packed with meh tools. You dig through glitchy apps or overhyped stuff that doesn’t even work, and it’s a total time suck. Marketers like us? We don’t have time for that—we need tools that actually deliver. That’s where There’s an AI comes in. It’s not like those other messy directories. This one’s all about the good stuff—think of it like a stash of hidden gems, no junk allowed. You can navigate easily on different categories in it, jumping from content tools to ad optimizers without breaking a sweat. And the search? Oh, it’s clutch. You can type in whatever you want, and it pulls up only the best—no shitty tools clogging up your screen.

AIPresentationMakers is a specialized review site dedicated to AI presentation tools. AIPresentationMaker offers: Comprehensive, hands-on reviews of every AI presentation tools An expert editorial team composed of professional designers and developers Tutorials, tips and tricks, and coupon codes for getting started with AI presentation tools The site's goal is to make it easy to understand how various AI products work and identify which products are the best fit for different types of users. All of the site’s content is based on the team’s expertise in both slide-making, as well as AI. The editorial team tests each product using real-world prompts and examples to provide the most representative set of scenarios on which to measure the applications.

Decopy AI offers a comprehensive platform for detecting AI-generated content in both text and images, as well as verifying the origins of visuals. Key Features 1. AI Content Detector: Identifies whether text is written by AI or humans. 2. AI Image Detector: Detects AI-manipulated images. 3. Reverse Image Search: Finds the original source of an image across the web. Benefits - All of Decopy AI’s powerful detection tools are completely free to use. No subscriptions, no hidden fees—everyone can access and benefit from our AI Content Detector, AI Image Detector, and other tools at zero cost. - AI Detector tools are built on advanced algorithms that provide exceptional accuracy in identifying AI-generated content and images. Whether you’re analyzing text or visuals, Decopy AI delivers reliable results that you can trust. Use Case - Educators verify student submissions for AI-generated work. - Businesses check content authenticity for marketing. - Researchers trace image origins for verification. - Content creators prevent unauthorized use of their visuals.

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AIEnhancer.net is a free, AI-powered image enhancement platform that transforms low-quality images into professional-grade visuals without requiring sign-up or technical expertise. Using state-of-the-art neural networks trained on millions of high-quality images, the platform offers three core tools: AI Image Upscaler (for enlarging images up to 4K/8K resolution while preserving sharp details), AI Photo Enhancer (for improving clarity, reducing noise, and restoring old photographs), and AI Image Enhancer (for optimizing colors, sharpening details, and fixing common image issues). The platform serves photographers, designers, e-commerce sellers, social media creators, and anyone needing to improve image quality instantly. All processing is automated with one-click enhancement, completed in 3-10 seconds, and supports JPG, PNG, WEBP, and HEIC formats up to 10MB. The service prioritizes user privacy by automatically deleting images after processing and requires no personal information or account creation.

DeepSite AI is an advanced AI-powered website generator that revolutionizes web development by enabling users to create professional, production-grade websites through simple text descriptions—no coding knowledge required. Powered by cutting-edge DeepSeek V3 technology, the platform offers instant website generation with real-time previews, automatic SEO optimization, and responsive design that adapts seamlessly across all devices. Whether you're building business websites, blogs, e-commerce platforms, portfolios, or landing pages, DeepSite AI provides an intuitive editor that makes website creation accessible to everyone. The platform features built-in SEO tools, fast deployment capabilities, and supports multiple website types, saving approximately 95% of development time compared to traditional methods while dramatically reducing costs. With DeepSite AI, users can instantly preview changes, adjust designs on the fly, and deploy professional websites in minutes rather than weeks or months.

crafteAI is an online AI image generation tool that effortlessly creates watermark-free images from text or images. Using advanced algorithms, it transforms textual descriptions into visual representations. The platform offers a wide selection of templates and styles, enabling users to quickly generate uniquely creative visual content without requiring any technical background.

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