Open-source alternatives to Quickstart Android

This project provides reference implementations for integrating iOS applications with Firebase backend services. It covers the setup of user authentication, real-time data synchronization, and cloud storage for mobile clients. The repository demonstrates the use of a serverless mobile backend, including the execution of cloud functions and the management of remote application configurations. It also includes implementations for identity verification using Google accounts and the delivery of mobile push notifications. The codebase covers broader capability areas such as application stability

This is a Backend as a Service SDK for Apple platforms, providing a collection of libraries that connect iOS and macOS applications to cloud databases, authentication services, and serverless infrastructure. It serves as a developer kit for integrating real-time data synchronization, file storage, and push notifications into native apps. The SDK is distinguished by its generative AI integration, which routes text and multimodal prompts between on-device models and cloud-hosted large language models. It further differentiates itself with a specialized app distribution tool for managing pre-rel

This is a backend-as-a-service SDK that connects web and mobile applications to a suite of cloud services. It provides a unified interface for managing user identity, executing serverless logic, and handling cloud object storage. The toolkit is characterized by its real-time data synchronization, which allows NoSQL document data to stay consistent across multiple clients with built-in offline persistence. It facilitates secure user access through a variety of identity providers and manages serverless function invocation to execute backend logic in response to HTTPS requests or database events

Hanko is an open-source identity provider and customer identity and access management system. It serves as a passkey authentication service and an OAuth and SAML SSO gateway, allowing applications to authenticate users and issue tokens via standard identity protocols. The project distinguishes itself through a strong focus on passwordless access using WebAuthn-based passkeys and email-based passcodes. It provides framework-agnostic authentication interfaces as customizable web components that can be embedded directly into web applications to handle login, registration, and profile management.

FlutterFire is a set of plugins and libraries that provide a Firebase SDK for applications built with the Flutter framework. It functions as a cloud services wrapper that maps Firebase cloud APIs to the Dart programming language, enabling backend integration for cloud data storage, user authentication, and serverless function execution. The project uses a plugin-based modular architecture to separate different cloud services into independent packages. It employs platform-interface abstractions and method-channel-based native interoperability to communicate with native Android and iOS SDKs thr

This project is a JavaScript library and SDK used to integrate web and mobile applications with cloud services. It serves as a bridge to backend providers for user authentication, binary object storage, and real-time data synchronization. The library provides a unified interface for managing cloud identity and access, executing queries and mutations against GraphQL endpoints, and consuming REST APIs with secure request signing. It also includes tools for accessing machine learning services for natural language processing and computer vision. Broad capability areas include offline-first data

This project is a collection of reference implementations and sample applications for Flutter. It provides practical examples covering API integration, user authentication, data persistence, and a gallery of UI patterns. The repository distinguishes itself by offering a wide array of functional demos, including implementations for Google and email-based identity verification, cloud database synchronization, and the use of both relational and key-value local storage. It also includes specialized utility examples such as expense tracking, tip calculation, and body mass index tools. The project

AngularFire is a set of tools for connecting applications to Firebase services. It provides a library of client-side interfaces for managing authentication, object storage, NoSQL databases, and serverless functions. The project utilizes observables and dependency injection to integrate cloud services into the application hierarchy. It features a reactive interface for streaming real-time data, managing document-based databases, and tracking authentication state as a continuous stream of tokens. The platform covers a broad range of cloud capabilities, including identity verification, binary f

This project is a cross-platform messaging SDK and client development library used to build custom Telegram applications. It functions as a comprehensive framework that manages network encryption, local data storage, and API communication, providing a C-compatible JSON interface that allows integration with any programming language. The library distinguishes itself by providing a full database manager for encrypted local caching and synchronized state, alongside a dedicated bot framework for creating interactive bots with business account integration. It enables the implementation of speciali

This project is a Model Context Protocol server and AI agent database connector. It provides a standardized communication layer that allows language models to interact with relational data stores, read database schemas, and manage PostgreSQL database resources. The implementation acts as a serverless host for the Model Context Protocol, deploying on distributed edge functions to connect AI assistants to a project. This enables AI agents to perform database administration, execute SQL queries, and handle schema migrations through an AI-compatible interface. The system covers broader capabilit

Convex is a serverless backend platform that provides a real-time reactive database, serverless functions, and state synchronization for web applications. It manages relational JSON documents using ACID-compliant transactions and schema validation to ensure data consistency and integrity. The platform distinguishes itself by synchronizing database state with clients via WebSockets, allowing user interfaces to update automatically as data changes. It also includes a specialized vector search database for performing semantic search using embeddings and supports both cloud-native deployment and

Jeesite is a full-stack low-code development framework designed for building enterprise administrative portals using Spring Boot, MyBatis, and Vue. It functions as a comprehensive platform for creating administrative dashboards with integrated role-based access control and organizational data permission systems. The framework distinguishes itself through a combination of automated CRUD code generation and an integrated RAG platform that connects large language models to enterprise data via vector stores. It further incorporates a BPMN-based workflow engine to automate complex business process

React-admin is a framework for building data-driven administrative interfaces that connect to REST or GraphQL backends. It provides a comprehensive suite of tools for managing the full lifecycle of administrative applications, including resource-oriented routing, declarative form scaffolding, and context-driven state management. By utilizing a modular adapter-based architecture, the framework abstracts backend communication, allowing developers to build consistent CRUD interfaces that handle data fetching, authentication, and synchronization automatically. The project distinguishes itself thr

Fonoster is a conversational AI framework and multi-tenant communications platform as a service. It serves as a programmable voice gateway and SIP telephony platform, enabling the creation of voice-based assistants and automated communication workflows using large language models. The project distinguishes itself through a vendor-agnostic speech integration engine that abstracts speech-to-text and text-to-speech providers. It features a multi-tenant architecture that isolates telephony resources and user identities into distinct organizational workspaces. The system covers a broad range of t

eShop is a .NET microservices reference application that provides a comprehensive blueprint for a distributed retail system. It implements an e-commerce architecture using decoupled services to manage core operations such as product catalogs, shopping baskets, and order processing. The project demonstrates a cloud-native retail infrastructure that incorporates an asynchronous event bus system to synchronize state across distributed services. It includes a reference implementation for integrating generative AI features by connecting the store to large language models via cloud providers. The

Vercel is a cloud platform for building, deploying, and scaling web applications. It provides a unified infrastructure that automates the build process by detecting project frameworks and distributing static and dynamic content through a global content delivery network. The platform executes application logic using serverless functions that scale automatically based on real-time traffic demand. The platform distinguishes itself through a centralized AI gateway that proxies requests to multiple model providers, enabling standardized authentication, observability, and cost tracking. It supports

AI Town is a TypeScript-based simulation engine used to create virtual environments where autonomous characters interact and socialize. It functions as a framework for orchestrating multiple AI agents within a persistent digital world, utilizing language models and a game engine to drive character behavior and social interactions. The project differentiates itself through a dedicated agent sandbox and a vector database agent store, which allow for the management of agent memories and world state. It integrates generative AI for background music and provides tools for simulation world design,

This is a Backend-as-a-Service SDK for React Native, providing a library to integrate mobile applications with backend services. It serves as a client for managing user authentication, cloud databases, and remote file storage within a mobile environment. The SDK enables mobile developers to implement secure login flows using OAuth, email, and phone verification. It includes a database client for performing CRUD operations on structured data and a storage client for uploading and retrieving binary assets from remote cloud buckets. Additionally, it features a WebSocket-based interface to receiv

Stack is an open-source identity provider that manages user authentication, passkeys, and OAuth tokens. It provides an identity infrastructure that handles user data storage and authentication flows via a centralized administrative dashboard. The platform differentiates itself by integrating a multi-tenant user management system that organizes users into team workspaces through invitation flows. It includes a secure secret vault for storing encrypted API keys and user tokens using encryption keys that remain hidden from the service provider. The system covers a broad range of administrative

Trailbase is a backend-as-a-service platform delivered as a single executable that integrates a realtime database engine, an identity and access manager, and a type-safe API generator. It provides a comprehensive backend environment including a SQLite-backed storage engine and a WebAssembly runtime server for executing custom logic. The platform distinguishes itself by automatically transforming database schemas into JSON APIs with cross-language client bindings and by allowing the execution of portable components for server-side rendering and custom HTTP routes. It further incorporates vecto

InsForge is a backend-as-a-service platform that provides an integrated suite of tools for managing relational databases, identity provision, object storage, and serverless compute. It functions as an open-source identity provider and a PostgreSQL database manager featuring integrated vector storage and row-level security. The platform serves as an LLM orchestration gateway, offering a unified endpoint to route requests across various AI providers through an OpenAI-compatible interface. It enables AI-driven application generation and connects AI agents to backend resources using a standardize

This project is an OAuth 2.0 client library and OpenID Connect SDK designed for integrating Microsoft identity platforms into JavaScript applications. It serves as a cross-platform authentication client for managing user identities and daemon services across browser-based and server-side environments. The library provides tools for acquiring and managing JSON Web Tokens to secure access to protected web APIs. It supports various authentication flows, including single-page application authentication, server-side identity management in Node.js, and non-interactive authentication for background

deployd is a realtime API framework and MongoDB backend as a service that allows for the creation of networked interfaces synchronizing data and events between clients and servers. It functions as a JavaScript API middleware that can be integrated with HTTP servers to provide authentication, request interceptors, and realtime capabilities. The project features a self-hosted API management dashboard for configuring resource settings, managing data collections, and monitoring server status through a web-based interface. It includes a realtime data synchronization engine that pushes live databas

This project is a foundational boilerplate for building software-as-a-service applications using Next.js, TypeScript, and Tailwind CSS. It provides a pre-configured project structure designed to accelerate the launch of a product. The kit integrates a conversational user interface that renders markdown responses from large language models. It includes a secure identity layer for user registration and session persistence across multiple authentication providers, alongside a billing system for managing tiered pricing plans and real-time payment updates. The technical surface covers a type-safe

serverless-express is a Node.js serverless framework adapter that enables standard web frameworks to run on serverless compute. It utilizes a compatibility layer to map cloud gateway events and triggers into standard HTTP request and response objects. The project features a full-stack code generator that produces API endpoints, database schemas, and frontend boilerplate from centralized entity relationship configurations. It includes a serverless event router to translate non-HTTP cloud events into simulated HTTP requests and a tool for provisioning NoSQL databases and cloud resources using d

This project is a client-side software development kit for iOS and macOS applications that integrates mobile software with a cloud-based backend. It functions as a mobile backend as a service interface, enabling developers to manage user authentication, cloud data persistence, and synchronization without the need to maintain server-side infrastructure. The framework is designed for offline-first development, utilizing a local datastore to cache application state and ensure functionality during periods of network disconnection. It features an automated synchronization engine that queues pendin

Backendlore is a collection of architectural guides and patterns for building stateless JSON HTTP APIs using Node.js. It focuses on designing backend systems that offload session and application state to external databases and in-memory stores to facilitate horizontal scaling. The project provides specific implementation standards for REST APIs, including request payload validation and the use of cryptographically signed cookies for session management. It details a strategy for file management that combines local filesystem caching for high-speed delivery with cloud object stores for long-ter