Open-source alternatives to Telegram

This project is a decentralized, privacy-focused messaging platform designed to eliminate reliance on central servers and persistent user identifiers. By utilizing a metadata-minimizing protocol, it ensures that all communication remains end-to-end encrypted and that user identities are stored exclusively on the local device. The architecture relies on relay-based message routing and identity-free network addressing to maintain data sovereignty and prevent the correlation of user activity. What distinguishes this platform is its commitment to traffic isolation and anonymity. Each conversation

Compose Samples is a collection of reference implementations for the Jetpack Compose UI library, serving as a practical guide for building native Android user interfaces. It demonstrates the use of a declarative framework where Kotlin functions describe layout structures and data dependencies, enabling developers to construct modern, reactive interfaces. The repository highlights architectural patterns that prioritize maintainability and testability, such as layered organization and unidirectional data flow. It showcases how to implement adaptive layouts that automatically adjust to various s

GitJournal is a mobile-first note-taking application and self-hosted manager for creating a structured markdown knowledge base. It functions as a git-synced notebook, allowing users to organize long-term information and notes as markdown files with metadata. The system ensures data portability and ownership by storing notes in a private version control repository. This approach enables cross-device synchronization and consistency through the use of git operations. The application supports digital note migration by importing data from third-party services into a local markdown format. It furt

Zeroclaw is a modular framework for building and deploying autonomous agents that integrate AI models, messaging platforms, and hardware interfaces. It functions as a multi-agent orchestrator and embedded systems controller, providing a unified runtime for managing agent lifecycles, memory, and security policies across diverse environments. The system distinguishes itself through its focus on secure, verifiable hardware and software orchestration. It enforces strict security boundaries, including command allowlisting, resource throttling, and interactive human-in-the-loop approval for sensiti

An ntfy MCP server for sending/fetching ntfy notifications to self-hosted or ANY ntfy.sh server from AI Agents 📤 (supports secure token auth & more - use with npx or docker!)

Caprine is a privacy-focused desktop client for Facebook Messenger. It functions as an Electron-based wrapper that encapsulates the web application to provide system-level features and advanced user interface customizations. The client prioritizes user privacy by masking activity status, hiding typing indicators, and blocking tracking parameters from outgoing links. It further enhances the user experience through a customizable interface that supports dark mode, custom stylesheets, and window vibrancy effects. The application includes tools for keyboard-driven navigation to switch between co

Carbon Voice MCP Server

MCP server that integrates the LINE Messaging API to connect an AI Agent to the LINE Official Account.

IRC Client for Mac

Wealthfolio is a local-first personal finance tracker and multi-currency net worth calculator designed for managing investments, spending, and overall financial standing. It functions as an extensible portfolio management platform that allows users to maintain their data on their own devices, with an optional self-hosted Docker deployment for private server access. The platform is distinguished by an LLM-powered financial assistant that handles natural language transaction imports and portfolio querying. It further differentiates itself through a TypeScript-based SDK and plugin architecture,

Litho is an Android declarative UI framework and component library used to build user interfaces through a declarative API and immutable state. It functions as an asynchronous layout engine that maps components to a structured view hierarchy to automate view updates. The framework optimizes rendering performance by computing element positions on background threads to prevent blocking the main UI thread. It further improves efficiency by flattening nested view hierarchies and caching layout results. The system includes capabilities for state reconciliation, component recycling, and the render

Notable is a local-first markdown note taking application and document manager. It functions as a personal knowledge base that persists notes as plain text files on the local disk to ensure data portability and user ownership. The application provides a markdown editor featuring a split-pane live preview for real-time rendering of content, including mathematical expressions and diagrams. Information is organized through a hierarchical tagging system that allows for nested labels and multi-dimensional categorization. The software includes tools for bulk note management to apply operations acr

OsmAnd is a mobile navigation application and vector map viewer that uses OpenStreetMap data to provide offline map access, turn-by-turn routing, and geospatial tools. It functions as a mobile routing engine and a GPX track recorder, allowing users to navigate and record movement without an active internet connection. The project integrates a mobile interface for contributing to the OpenStreetMap project, enabling users to report map errors and add new points of interest directly from their devices. It also includes a system for visualizing satellite imagery and custom tile overlays on top of

This project is a mobile ecosystem curriculum providing structured learning paths for Android development, Kotlin Multiplatform, and programming language internals. It serves as a comprehensive guide to the technologies and concepts required to build native applications and shared business logic across multiple environments. The repository includes a dedicated interview preparation guide featuring professional technical questions and architecture tips for developers pursuing Android engineering roles. It also provides specific roadmaps for mastering the Kotlin Multiplatform ecosystem and anal

This repository serves as a centralized collection of technical documentation and architectural patterns for developers building mobile software on the Android platform. It functions as a comprehensive guide for implementing idiomatic Kotlin code and establishing consistent engineering standards across mobile projects. The project provides curated resources focused on Android development best practices and efficient programming patterns. By emphasizing maintainable code structures and recommended architectural approaches, it assists teams in managing the complexity of mobile application devel

Open Design is an AI design orchestration platform and LLM agent workspace designed for generating prototypes, presentations, and motion graphics. It functions as a local-first environment that integrates various command-line AI agents and coding tools into a unified design workflow, allowing users to migrate design specifications into brand-compliant source code. The project is distinguished by its ability to enforce visual consistency through a design system manager that defines brand contracts and tokens using Markdown. It features a specialized motion graphics generator that converts HTML

android-discuss is an Android developer community forum and technical Q&A platform. It serves as a peer-to-peer knowledge base where developers share technical knowledge, solve coding problems, and exchange professional advice regarding Android system architecture and APIs. The project also functions as a mobile development job board, providing a curated directory of professional career opportunities and open roles specifically for mobile application engineers. The platform covers broad capability areas including Android development support, knowledge sharing of educational materials and tec

AndroidUtilCode is an Android utility library and system API wrapper designed to reduce development boilerplate. It provides a collection of helper classes for common tasks including system settings management, file I/O, and hardware access. The project distinguishes itself through a comprehensive toolset for device management and UI assistance. It includes specialized capabilities for monitoring battery status, managing system volume and brightness, and implementing UI helpers to prevent duplicate click events. It also provides a dedicated system for coordinate conversion between different m

This project provides a collection of reference materials, guides, and cheatsheets designed to optimize the Android development workflow. It serves as a comprehensive resource for implementing best practices in application building, debugging, and user interface design. The repository covers specialized techniques for build optimization, including methods to reduce binary sizes and accelerate compilation. It also provides detailed references for device debugging, memory leak detection, and the application of Material Design principles. The project further details productivity enhancements fo

Berty is a peer-to-peer messaging application and framework designed for decentralized private messaging. It utilizes a distributed identity protocol and a decentralized database to enable end-to-end encrypted communication without relying on central servers, phone numbers, or email addresses. The project distinguishes itself through an offline messaging framework that uses Bluetooth Low Energy and multicast DNS for local device discovery. This allows peers to establish direct connections and exchange messages without internet or cellular data, using QR codes for secure contact exchange. The

Home Assistant is a local home automation platform and server that acts as an IoT device orchestrator. It integrates diverse smart home hardware by wrapping third-party APIs into a standardized logic layer and stores all system state and historical statistics on local hardware to eliminate cloud dependencies. The system functions as a Matter IoT controller and an MQTT home automation bridge, allowing for local interoperability between different manufacturers. It features a state-based entity model and an internal event bus that decouple physical device logic from system automation. The platf

Mempalace is a local-first long-term memory store for large language models and AI agents. It provides a persistent storage system for verbatim conversation history and agent data, utilizing a local-first knowledge graph to track evolving entity relationships and timelines. The project implements a standardized memory protocol that allows external AI clients to read and write persistent memory via standard input and output. It features a hybrid semantic search engine that combines keyword boosting and reranking to find precise historical information across scoped categories. The system inclu

This Android logging library is a toolkit for printing formatted, stylized, and filtered debug messages to the Android console and local files. It functions as a console log styler, a log file writer, and a formatter for converting complex data into human-readable text. The library provides specific utilities for customizing the visual appearance of logs by tracking thread information and call depth. It includes capabilities for converting JSON, XML, and collection data into readable formats and saving console entries to local files for offline analysis. The system covers broader log managem

This is a mobile object database and NoSQL local data store that replaces relational tables with a schema-based model. It functions as a reactive data store, using live object observations and change notifications to trigger automatic user interface refreshes. The system provides built-in mobile cloud data synchronization to keep local datasets consistent with a remote server across multiple devices. It also includes security features for encrypted local storage, protecting sensitive on-disk data using at-rest encryption keys and fine-grained access control. Broad capabilities include object

This project provides a comprehensive set of architectural patterns, build configurations, and quality standards for developing maintainable and scalable Android applications. It serves as a guide for organizing mobile application code into feature-based modules to improve encapsulation and simplify navigation, while establishing a framework for standardizing build processes and dependency management across development environments. The repository distinguishes itself by offering strategies for integrating automated quality assurance, including unit testing, static code analysis, and performa