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.

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.

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.

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).

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.

AI Watermark Remover is a powerful AI tool designed for effortlessly removing watermarks from images and videos in no time, with no need for Photoshop skills. It's especially ideal for creators and professionals who work with images. With its user-friendly interface, AI Watermark Remover simplifies the process, allowing for the seamless removal of not only watermarks but also other unwanted elements such as logos and text overlays.  The technology behind this tool uses advanced algorithms to detect and erase watermarks without compromising the original quality of the image or video. This precision ensures that the aesthetics of the visuals are maintained, making this tool ideal for professionals aiming to produce clean and unblemished media for presentations, marketing materials, and online content. Furthermore, the speed of AI Watermark Remover is a significant advantage, providing quick results that help maintain a fluid workflow and boost productivity.

Rupert AI envisions a world where marketing is not just about reaching audiences but engaging them in the most personalized and effective way. Our AI-driven solutions are designed to make this vision a reality for businesses of all sizes. Key Features - AI model training: You can train your vision model, an object, style or a character. - AI workflows: Multiple AI workflows for marketing and creative material creation. Benefits of AI Model Training - Custom Solutions: Train models to recognize specific objects, styles, or characters that match your needs. - Higher Accuracy: Get better results tailored to your unique requirements. - Versatility: Useful for different industries like design, marketing, and gaming. - Faster Prototyping: Quickly test new ideas and concepts. - Brand Differentiation: Build unique visual styles and assets that stand out. Benefits of AI Workflows - Time Saver: Automates repetitive tasks, speeding up content creation. - Consistency: Keep the look and feel of your brand uniform across different materials. - Cost Effective: Cuts down on manual work, saving resources. - Personalized Content: Easily create variations for different audiences. - Adaptable: Automatically adjusts content for different platforms and formats. Use Case E-Commerce Catalog Expansion: Automatically generate high-quality product images for new items based on a few reference photos. This allows e-commerce businesses to quickly populate their product catalogs without the need for costly photo shoots.

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.

Unblurimage AI offers a cutting-edge platform for enhancing and upscaling images, making them sharper, clearer, and more vivid. It specializes in restoring and transforming photos for various professional and personal needs. Key Features 1. Image Upscaling: Enlarge images without losing quality, perfect for high-resolution displays. 2. Image Enhancement: Improve image clarity, brightness, and detail. 3. High-Definition Conversion: Transform low-resolution photos into crisp HD images. Benefits 1. Old Photo Restoration: Revive old or damaged photographs with advanced repair tools. 2. Photo Colorization: Add natural and vibrant colors to black-and-white or faded photos. Use Case - Photographers enhance low-quality photos for portfolios and exhibitions. - Businesses create high-quality product visuals for marketing and e-commerce. - Families restore and colorize old family photos for preservation. - Researchers improve clarity in historical or archival images. - Content creators upscale images for social media or digital projects.

Scribbl is an AI meeting assistant that transforms conversations into searchable, shareable knowledge while you focus on what matters - the conversation. With smart summaries, instant video highlights, and seamless integrations, your meetings become actionable intelligence without the busy work. Key Features - Smart Transcription & Recording: Crystal-clear transcripts and video capture without intrusive bots or complicated setup - AI-Powered Summaries: Automatically extracts key topics, decisions, and action items from every conversation - Instant Navigation: Jump to any moment using AI-enhanced video search and topic breakdown - Team Intelligence: Automated sharing rules and collections ensure insights reach the right people - Business Tool Integration: Seamlessly syncs with HubSpot, Pipedrive, Slack, and Google Drive Benefits - Time Reclaimed: Stop taking manual notes and focus fully on your conversations - Perfect Memory: Never miss a detail with searchable transcripts and smart summaries - Effortless Documentation: Meeting insights automatically flow into your CRM and team tools - Enhanced Collaboration: Keep everyone aligned with intelligent sharing and organized collections - Client Success: Streamline follow-ups and ensure every client interaction is captured and actionable Use Case Use Scribbl to automatically capture, summarize, and distribute critical meeting insights across CRM and collaboration platforms. For example, A sales team uses Scribbl to automatically document client meetings, with notes flowing directly into HubSpot and key moments shared instantly with account managers. Team leads gain visibility through automated collections, while clients receive polished follow-ups faster - all without anyone taking manual notes.

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.

Cloudbooklet AI gives you useful tools to make your work easier. Create images from text with the AI Image Generator or chat with the AI Chatbot for quick answers. With over 23,000 tools in different categories, you’ll find what you need to get things done.

Turn your unstructured data into perfectly optimized vector search indexes, purpose-built for retrieval augmented generation.

PicNow is the fastest ai image generator on the planet. You can create up to 4 images simultaneously in 1 second. That’s about 20x faster than OpenAI’s image tools—and the quality is still amazing. It even handles text in images really well, which is often a pain point with other generators. Why does speed matter? When image generation is instant, a new creative process emerges— say vibe imaging ;). No more waiting 20 seconds; you can generate, see results, and iterate in real-time, staying in the creative flow. You can use this tool as a first step for more advanced image processing, or sometimes the results are already perfect as they are. Instant images, infinite ideas.

iColoring creates and prints custom coloring pages for free with the AI coloring pages generator. Key Features 1. Text to color: iColoring turns text into unique coloring pages, generating distinctive coloring books for creative projects and educational institutions. 2. Design by AI: By inputting specific text, users get their coloring page with specified designs. This allows personalized messages or themes to be seamlessly integrated into the artwork, enhancing the overall experience. For instance, generate coloring pages featuring a specified logo for children in your educational institution. Benefits 1. Save more time: When you need to do a lot of similar designs, it helps you save a lot of time, especially for batch work or non-high quality work. 2. Generates more ideas: When designers run out of ideas, iColoring provides them with more inspiration and direction. Use Case 1. Help users quickly create coloring pages when their creative inspiration is exhausted. 2. Generate a coloring book with a specific theme for education.

AI Image Generator: Create Stunning Visuals for Free, No Sign-Up Required! Welcome to the AI Image Generator, where your creativity can flourish without barriers! Our platform allows you to generate beautiful, high-quality images from text descriptions using multiple advanced AI models—all for free and without the need to sign up!