Open-source alternatives to Android

Syncthing Android is a mobile application and service wrapper that enables decentralized, peer-to-peer file synchronization on the Android platform. It functions as a distributed data sync tool that mirrors folders across multiple devices without the need for a central cloud server. The project provides a mobile interface to manage a synchronization instance, utilizing a service-wrapper architecture to handle the lifecycle and configuration of the underlying synchronization binary. It ensures secure data exchange through TLS encryption, certificate-based identity verification, and password-pr

JHenTai is a specialized gallery client and media browser for accessing adult image galleries and manga. It functions as a multi-source media downloader and local image gallery manager, allowing users to find, view, and save content from remote sources. The application features biometric-based access control, using fingerprint scanning to secure private image libraries and account profiles. It also includes a fallback-based request routing system that redirects content requests to secondary sources when primary data providers fail to respond. The platform covers broad capabilities for conten

TagSpaces is an offline-first file tagging and organization platform that lets you manage local files with portable metadata stored directly in filenames or sidecar JSON files, eliminating the need for a central database. It functions as a full-text file search engine, a Kanban board file organizer, a local AI file assistant, an S3-compatible cloud file manager, and a web clipper and bookmark manager, all within a single application. The project distinguishes itself through a local-first architecture where all file operations, indexing, and AI processing run entirely on the device, with cloud

This project provides a comprehensive technical framework for developers building software applications that handle protected health information. It serves as a guide for navigating the legal and technical requirements necessary to ensure that applications and their underlying infrastructure adhere to mandatory health data privacy standards. The guide distinguishes itself by addressing the full spectrum of compliance, from identifying regulatory obligations and business associate requirements to implementing specific technical and physical safeguards. It offers detailed strategies for securin

This project is a Telegram API client and media archiving system designed to programmatically retrieve chat histories and export media. It functions as a download manager and message forwarder, allowing users to back up photos, videos, and documents from Telegram chats into structured local archives. The system distinguishes itself through advanced content filtering and forwarding capabilities. It can monitor chats for new messages, apply custom regular expressions to filter media by size or date, and automatically forward content between chats. This includes the ability to export protected c

Bangumi is a cross-platform mobile application that serves as an anime and manga tracker, a community client for BGM.tv, and a local media library manager. It enables users to record viewing progress, browse community-driven media databases, and link local media files to official database entries through pattern-based filename scraping. The application functions as a media discovery tool, utilizing AI recommendations, relationship graphs, and community trend analysis to find new content. It integrates a social ecosystem that allows users to participate in forums, manage friendships, and brows

FileBrowser is an open-source, self-hosted file management interface that runs as a single binary with no external dependencies. It provides a web-based interface for browsing, uploading, editing, and sharing files on a remote server, with a core architecture built on JWT-based stateless authentication and a rule-based path permission engine that controls access at the directory level. The project distinguishes itself through a comprehensive access control system that supports multi-provider authentication including OIDC, LDAP, external JWT, and two-factor authentication, alongside granular p

Nextcloud Android is the official mobile client for synchronizing files and folders with a self-hosted Nextcloud server. It uses the WebDAV protocol and Android WorkManager to keep local and remote copies identical, supporting background sync, metadata caching, and multi-account management. The app enables remote file management directly from an Android device, including browsing, uploading, deleting, and organizing files. It provides secure offline access to cached content, generates share links for files and folders, and integrates with Android’s share intent system. Authentication tokens a

Megabasterd is a cross-platform MEGA cloud storage client designed for downloading, uploading, and streaming files from MEGA accounts. It functions as both a file transfer tool and a media streamer, enabling the movement of data between local machines and cloud storage. The tool allows for remote media streaming, which lets users play media files stored in the cloud directly without requiring a full download to the local disk. The project provides comprehensive cloud storage management, covering local-to-cloud uploads and cloud-to-local downloads across multiple operating systems.

OxiCloud is a self-hosted cloud platform designed for managing file storage, shared links, and user quotas on private server hardware. It functions as a synchronization service for calendars and address books and provides a cloud storage system for organizing files and folders. The platform implements the WebDAV protocol for file management and utilizes CalDAV and CardDAV for cross-device personal information synchronization. It integrates an OpenID Connect identity provider to secure access and manage user permissions. The system includes administrative tools for storage quota control to re

PicList is a cloud image upload manager and storage file browser designed to facilitate image hosting for Markdown documents. It serves as a bridge between document editors and cloud providers, providing a local server that accepts image uploads and returns formatted Markdown or HTML links. The tool features an image preprocessing pipeline that applies watermarks, compression, and custom renaming patterns before files are uploaded. It supports synchronization of application settings, image albums, and plugins across multiple devices using WebDAV and Git. The system manages files across vario

CloudPaste is a secure file sharing platform and multi-backend storage aggregator. It unifies local and S3-compatible cloud storage providers into a single managed file system, serving as a gateway for centralized file access and distribution. The platform distinguishes itself through a built-in browser-based Markdown editor for composing documents with formulas and diagrams. It provides secure content sharing using password protection, expiration dates, and path-restricted API keys to control programmatic access and visibility. The system covers broad capabilities in file management, includ

Miniserve is an HTTP static file server that hosts local directories over the network with an integrated web-based file browser. It functions as a single-binary tool capable of serving as a markdown rendering server, a TLS-enabled web server for encrypted traffic, and a WebDAV file manager for remote file operations. The project distinguishes itself through specialized hosting modes, including a single page application mode that routes requests to a single index file and the ability to generate random hexadecimal access URLs to obscure served directories. It also provides the ability to conve

Aliyunpan is a desktop client and cloud storage file manager designed for organizing and managing data stored on Aliyun Drive. It provides a dedicated interface for uploading, downloading, and organizing files and folders within the cloud storage environment. The application distinguishes itself through multi-account management, allowing users to log into and operate across several different cloud identities simultaneously to move data between accounts. It further integrates the Aria2 protocol to offload file transfers, enabling the movement of data directly from the cloud to remote servers o

dufs is a self-hosted file manager and static file server that provides HTTP file hosting and WebDAV capabilities. It functions as a tool for sharing files over HTTP and managing folders remotely through both a web-based interface and the WebDAV protocol. The server distinguishes itself by mapping incoming requests directly to a local directory structure and offering a single-binary distribution for deployment. It supports the mounting of the server as a network drive via WebDAV and allows for the replacement of the default web interface using customizable asset overlays. The project covers

GCDWebServer is a lightweight HTTP 1.1 server for iOS, macOS, and tvOS. It serves as an embedded network server for Apple platforms, allowing developers to handle incoming requests through custom synchronous or asynchronous handlers. The project includes a WebDAV server implementation for remote file management, directory browsing, and synchronization using standard network clients. It also provides a web-based file manager that enables users to upload, download, and organize files within an application sandbox via a browser. Additional capabilities include gzip compression, JSON processing,

Nextcloud is a self-hosted platform designed for private cloud storage, file synchronization, and collaborative team workspaces. It provides a comprehensive suite of tools for document editing, groupware services like calendars and contacts, and secure data management, all while ensuring users maintain full control over their infrastructure and data sovereignty. The platform distinguishes itself through a decentralized federated architecture that allows independent server instances to securely share data and collaborate across a network. It features a highly modular plugin ecosystem, enabling

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

Cyberduck is a multi-protocol file transfer client and cross-platform file manager for Mac and Windows. It functions as a cloud storage manager and remote storage mounter, allowing users to upload, organize, and synchronize data between local drives and remote endpoints. The application provides a unified interface for managing files across FTP, SFTP, WebDAV, S3, and other cloud storage protocols, including Amazon S3, Backblaze B2, Microsoft Azure, and OneDrive. It distinguishes itself with a client-side encryption vault that encrypts files and folders locally before they are transmitted to r

This project is a Telegram cloud mirror bot designed to download files from various internet sources and mirror them to Telegram or cloud storage. It functions as a specialized service for remote media downloading, torrent and Usenet leeching, and automated content mirroring. The bot distinguishes itself through deep integration with the Rclone ecosystem for managing, cloning, and migrating files across multiple cloud providers. It includes an RSS content automator to trigger downloads based on user-defined filters and utilizes service account rotation to bypass API quotas when managing cloud

This is a TypeScript web application and single-page application built with Angular. It serves as a full-featured blogging platform and content management system that implements professional architectural patterns for building complex user interfaces. The project functions as a REST API client that integrates with a backend service to manage users, articles, and social interactions. It includes a markdown content renderer to display formatted articles and a system for content discovery using paginated feeds and category filters. The application covers several functional domains, including us

Komodo is a self-hosted deployment manager and agentless software distributor designed to build application binaries and distribute them across a fleet of remote servers. It functions as a remote deployment orchestrator that manages the build and release process from a centralized control point. The system distinguishes itself by using a programmatic deployment pipeline, employing script logic rather than static configuration files to coordinate build and distribution sequences. It utilizes SSH for remote execution and binary synchronization, allowing the controller to push updates to target

gcalcli is a command-line interface and calendar management tool designed for viewing, creating, and managing events within Google Calendar. It functions as a Google API client that allows users to handle scheduling and appointments directly from a terminal without the use of a web browser. The tool enables terminal-based scheduling and calendar workflow automation, providing a way to manage daily agendas and schedule updates through a shell. The utility integrates with the Google Calendar API via a REST client and uses OAuth2 for authentication. It renders API data into human-readable table

Snowflake is a cross-platform mobile app starter designed for building iOS and Android applications using a single JavaScript codebase. It provides a pre-configured boilerplate to accelerate the initial development process for mobile applications. The project includes a Redux state management template for coordinating global application state and persisting user sessions, along with a REST API integration framework for communicating with remote or local servers via HTTP requests. It also features a localization system that maps user interface content into multiple languages based on the devic

Fleetbase is a modular, containerized logistics operating system designed to manage end-to-end supply chain operations, including fleet dispatch, inventory control, and order fulfillment. It functions as a headless e-commerce and logistics platform that provides the infrastructure to build multi-vendor marketplaces and consumer-facing ordering applications. By utilizing a centralized identity system and event-driven workflows, the platform automates complex delivery lifecycles and financial accounting processes. The platform is built on a modular architecture that allows developers to extend

Boxplayer is a cloud media player and storage manager that enables high-definition video streaming and file administration across multiple cloud storage providers through a unified interface. It functions as a cloud media player with subtitle and audio support, a metadata organizer for structuring media libraries, and a high-speed download manager using a multi-threaded engine. The project implements a Model Context Protocol server, which exposes cloud storage and media management functions as programmable tools and context for AI agents. This allows for AI-driven storage automation and the a

r2 is a JavaScript HTTP client library and asynchronous request library used for executing network calls. It provides a runtime-agnostic network layer that abstracts underlying HTTP implementations to ensure consistent behavior across different JavaScript execution environments. The library functions as a JSON API client, automatically parsing response bodies and formatting outgoing payloads. It utilizes a promise-based interface to manage the lifecycle of HTTP requests and responses. The project covers REST API integration and HTTP header management, allowing users to attach custom key-valu