Open-source alternatives to Stream Chat Android

Azure Docs is the official technical documentation repository for Microsoft Azure, the cloud computing platform. It provides comprehensive guidance on the full spectrum of Azure services, covering everything from core infrastructure components like virtual machines, Kubernetes clusters, and serverless computing to platform services for AI, machine learning, data analytics, and storage. The documentation details how to provision, manage, and govern cloud resources at scale, including policy enforcement, identity management, and cost optimization. The documentation distinguishes Azure through i

This is a Go client library for interacting with the Slack API, providing a programmatic interface to manage channels, users, and workspace settings. It functions as a bot framework and event handler, allowing for the development of automated assistants that respond to workspace activities. The library includes a dedicated Block Kit builder for constructing complex UI layouts, such as interactive elements, data tables, and visualizations, for rich messaging. It also provides a full implementation for managing user authentication and identity verification through OAuth2 and OpenID Connect. Br

Now in Android is a reference application and framework designed to demonstrate modern development patterns for the Android platform. It provides a comprehensive implementation of a modular architecture, utilizing industry-standard practices to organize codebases into independent components that support long-term maintainability and build performance. The project centers on a reactive, unidirectional data flow model that synchronizes visual components with underlying data states. By employing a declarative toolkit for interface construction, the application ensures that screen layouts update

Sunflower is a reference implementation designed to demonstrate modern Android development patterns and industry-standard architectural practices. It serves as a comprehensive guide for building functional mobile applications by integrating declarative user interface toolkits with robust data management and navigation systems. The project distinguishes itself by showcasing the transition from legacy view-based systems to modern declarative frameworks. It provides a practical example of how to organize code into distinct layers, manage complex state, and implement dependency injection to ensur

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

Stoatchat is a real-time chat server and messaging backend that utilizes WebSockets to handle instant communication, live event updates, and user presence tracking. The project incorporates an encrypted file storage system and cloud storage layer that applies AES encryption to binary data before upload. It also functions as an HTTP content proxy server to mask user IP addresses when fetching media from third-party services and as a push notification gateway to ensure reliable alert delivery via a background dispatch queue. The system includes role-based access control to manage user permissi

WuKongIM is a distributed instant messaging server designed for real-time chat and notifications. It functions as a decentralized communication cluster that utilizes a pub-sub message router to distribute data to individual users and large-scale group channels. The system includes a specialized AI chat streaming protocol to deliver low-latency, incremental responses from artificial intelligence agents. It also features a webhook event gateway that forwards communication status changes and message events to external business applications via callbacks. The platform provides infrastructure for

Gotify is a self-hosted notification server designed to centralize the receipt and dispatch of real-time messages. It provides a RESTful API and a WebSocket gateway, allowing users to programmatically send alerts and push notifications to connected clients. By maintaining a private infrastructure, the platform ensures full control over message history, data retention, and access management. The system distinguishes itself through a modular, plugin-based architecture that allows for the extension of core functionality, including custom HTTP endpoints and webhook event processing. It supports g

qksms is an open source Android SMS client designed for sending and receiving text and multimedia messages via cellular services. It serves as an alternative to stock messaging applications, providing a dedicated interface for mobile text communication. The application is built as a Material Design messenger, focusing on a clean visual experience through modern design principles. It allows for the customization of the Android messaging experience by replacing the default system interface.

Android-Expert is a collection of educational resources and step-by-step instructional materials for learning Android app programming. It provides a comprehensive learning path for building mobile applications using the Kotlin programming language and Android Studio. The material covers the full development lifecycle, from designing interactive user interfaces with lists, cards, and sliders to implementing navigation workflows and screen transitions. It also includes instruction on connecting applications to remote servers to fetch external data and integrating that data into the app flow. T

react-native-firebase is a modular set of libraries that integrates Firebase cloud services into cross-platform mobile applications. It serves as a native-SDK wrapper, mapping JavaScript method calls to native iOS and Android Firebase SDKs via the React Native bridge to provide a type-safe interface for mobile backend integration. The project enables connectivity to a wide array of cloud services, including user authentication and identity management, NoSQL cloud databases with real-time synchronization, and scalable cloud storage for media files. It also provides tools for sending push notif

Helios is a mobile backend as a service providing a server-side platform to manage user accounts, push notifications, and data synchronization for mobile applications. It functions as a REST API framework that automatically generates database tables and standard web service endpoints from defined data models. The project implements specialized services for the Apple ecosystem, including a Passbook service for managing digital passes and device registration. It also provides an in-app purchase verification service to decode purchase receipts and validate product identifiers through external ve

Signal-Server is a distributed communication backend and end-to-end encrypted messaging server. It serves as a secure message relay that implements the Signal Protocol to manage identity keys and session states for private communications. The system functions as a cross-platform messaging backend that coordinates the delivery and exchange of encrypted messages between clients. It is designed to route private data between users while ensuring the server cannot access the conversation content. The infrastructure provides secure communication capabilities through a relay-based delivery model an

This repository serves as an educational resource for implementing asynchronous programming patterns in Android applications using Kotlin Coroutines and Flow. It provides a collection of practical examples and unit tests designed to demonstrate how to manage background tasks, concurrent network requests, and reactive data streams while maintaining a responsive user interface. The project focuses on structured concurrency, offering patterns for organizing tasks into hierarchical scopes that automatically propagate cancellation and lifecycle signals. It emphasizes the integration of lifecycle-a

This project is a sample implementation of an audio playback application for the Android platform. It serves as a reference for building music players that utilize standard media APIs and system-level audio management. The implementation demonstrates the integration of media session controls for external hardware and provides a reference for synchronizing media playback and control states across multiple connected hardware devices. The project covers several core areas of Android audio development, including background playback services, media store querying, and declarative user interface c

This project is a cross-platform mobile UI library and design system built for the React Native framework. It provides a collection of styleable and reusable interface components to ensure visual consistency across different mobile operating systems. The framework includes a specialized tool for transforming raw HTML strings into native mobile components using custom element rendering and style overrides. It also features a remote update system that allows interface changes and new features to be pushed directly to devices without requiring a full application store release. The library cover

This project is a collection of reference implementations, sample code, and starter kits for integrating Firebase backend services into web applications using the JavaScript SDK. It serves as a practical guide for bootstrapping projects with cloud-hosted authentication, databases, and serverless logic. The repository provides specific examples for implementing real-time data synchronization, user identity management, and event-driven cloud functions. It also includes reference code for using local service emulators to test cloud functionality on a local machine before production deployment.

This repository provides a collection of reference implementations for building mobile applications using the Kotlin Multiplatform framework. It serves as a practical guide for centralizing core application logic, data handling, and business rules into a single shared codebase while maintaining the ability to build native user interfaces for Android and iOS. The project demonstrates architectural patterns for managing state, persistence, and network synchronization across diverse mobile operating systems. By utilizing common source sets and platform-specific native interop, it enables develop

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

MvvmCross is a .NET MVVM framework designed for building cross-platform applications by separating business logic from native user interfaces. It functions as a navigation engine and a UI data binding library, enabling the encapsulation of logic within view models that are reused across different operating systems. The framework provides a native hardware abstraction layer and a dependency injection container to decouple components and provide a consistent interface for accessing device features. It coordinates type-safe transitions between native screens and manages the synchronization of da

SuperAGI is a comprehensive marketing automation platform and customer data system designed to orchestrate multi-channel engagement workflows. It functions as a no-code workflow orchestrator, allowing users to build complex, automated task sequences triggered by real-time user behavior, transactional data, or scheduled events. By centralizing customer profiles and interaction history, the platform enables businesses to manage end-to-end marketing operations from a single interface. The platform distinguishes itself through its deep integration with e-commerce storefronts and its ability to ex

This project is an RTMP media streaming SDK and a real-time communication framework designed for pushing and playing audio and video streams. It provides tools for interactive broadcasting, low-latency voice and video calls, and a cross-platform media player compatible with Windows, iOS, and Android. The toolkit enables interactive live broadcasting with support for multi-host interactions and the ability to push streams to distribution servers via CDN. It includes a cloud recording manager for capturing live sessions and saving them as files to cloud storage, along with a system for composit

This project provides a cross-platform messaging interface toolkit designed for building real-time chat applications and generative AI agents. It offers a collection of pre-built components that render consistent messaging experiences across mobile and web environments, handling the complexities of state management and data synchronization between the user interface and backend services. The library distinguishes itself through a highly modular architecture that allows developers to inject custom logic and UI overrides via builder functions. This approach enables the creation of tailored mess

Shiro is a personal website template and markdown static site generator designed to establish a professional digital portfolio. It provides a minimalist framework for deploying a high-performance personal site featuring an integrated administrative panel and SEO optimizations. The project distinguishes itself through a WebGL interactive frontend that renders dynamic particle physics backgrounds and animated SVG signatures. It incorporates a WebSocket notification system to push instant updates to visitors and uses API-driven metadata enrichment to transform external links into rich visual car

This project is a community-curated directory of open-source software designed for deployment in private server environments and home labs. It serves as a comprehensive resource for discovering independent, self-hosted alternatives to mainstream cloud services, enabling users to maintain full data ownership and control over their digital infrastructure. The directory is structured through a hierarchical taxonomy that organizes a vast collection of applications into logical categories, ranging from media management and data analytics to private communication and team productivity tools. It dis

This project is a Node.js framework designed for headless browser automation, enabling the creation of automated messaging clients. It functions by controlling a headless browser instance to programmatically interact with the messaging interface, allowing developers to simulate user sessions and manage complex chat workflows. The library distinguishes itself through its comprehensive session management and event-driven architecture. It supports persistent authentication by serializing session data to local or remote storage, ensuring that automated clients can maintain continuous connectivity