Open-source alternatives to Libfuse

html5-qrcode is a client-side JavaScript library that enables QR code and barcode scanning directly in a web browser, processing live video from a device camera or decoding codes from uploaded image files without any server-side involvement. The library handles real-time scanning from continuous camera feeds with adjustable frame rates and scanning regions, while also supporting file-based decoding for static images. The scanner offers configurable behavior through runtime settings, allowing developers to adjust scanning speed, viewfinder region, aspect ratio, and restrict decoding to specifi

Mountpoint for Amazon S3 is a FUSE-based filesystem client that mounts S3 buckets as local directories, enabling standard file operations on objects without custom code. It enforces S3 bucket permissions through AWS Identity and Access Management policies on every operation, and implements lazy object materialization to fetch content on-demand rather than downloading entire objects at mount time. The filesystem maps S3's flat key namespace into a hierarchical directory structure using forward slashes as path separators, and supports write-back object assembly that accumulates local writes into

Kubo is a peer-to-peer implementation of the InterPlanetary File System (IPFS) designed for decentralized data storage and content delivery. It uses content-addressing, directed acyclic graphs, and distributed hash tables to identify, distribute, and retrieve data across a network without relying on central servers. The project differentiates itself by providing a virtual filesystem via FUSE, which maps decentralized network namespaces to local operating system directories for direct file access. It also includes integrated HTTP gateways that translate peer-to-peer content into standard web t

AppImageKit is a system of tools and utilities for bundling Linux desktop applications into single-file, portable executables. It functions as a packager that converts application directories into self-mounting binaries, allowing software to run across multiple Linux distributions without a formal installation process. The project enables portable software distribution by isolating application configurations and home directories from the host system, which allows applications to run from removable media. It includes a filesystem manager for extracting, inspecting, and mounting the embedded im

Dokan is a user-mode file system library for Windows that allows applications to create custom file systems accessible as normal Windows volumes without writing kernel-mode device drivers. It provides a FUSE compatibility layer that maps FUSE operations to Dokan callbacks, enabling existing FUSE-based file systems to run natively on Windows by rebuilding the source code with Cygwin or MinGW. The library exposes its file system API through language-specific wrappers for C, .NET, Java, Delphi, Ruby, and Python, supporting cross-language file system development. It handles file operations throug

SSHFS is a network filesystem client that maps remote server directories to local mount points. It functions as a userspace implementation of a filesystem, allowing users to access and manage remote files as if they were on a local disk using the SFTP protocol over SSH. The tool distinguishes itself by offering multiple transport options, including encrypted SSH tunnels for security and direct TCP socket connections to bypass encryption for higher throughput. It also supports connectivity via virtual sockets to access directories hosted inside virtual machines. The system includes capabiliti

s3fs-fuse is a FUSE-based filesystem that mounts Amazon S3 buckets and S3-compatible object storage as local directories. It functions as a cloud object storage gateway, translating standard POSIX filesystem calls into RESTful API requests to allow remote objects to be accessed as if they were local files. The project enables the mapping of remote object stores to local paths on Linux, macOS, and FreeBSD. It supports integration with third-party S3-compatible providers through the use of custom service URLs and specialized request styles. The system includes capabilities for local data and m

AndroidAsync is a non-blocking networking library for Android that provides asynchronous sockets, HTTP clients, and servers based on Java NIO. It serves as a toolkit for managing raw TCP socket connections and bidirectional data streams using an asynchronous input and output architecture. The library includes a dedicated WebSocket framework for establishing persistent full-duplex communication channels between Android clients and servers. It also enables the hosting of a lightweight asynchronous HTTP server directly on an Android device to handle incoming network traffic. Its broader capabil

bup is a deduplicating backup manager and incremental backup system. It uses a Git packfile-based storage format to eliminate redundant data across files and versions, treating every incremental save as a full backup. The system provides secure remote transport interfaces for transferring and managing backup data on remote servers via SSH. It also includes a backup repository browser available as both a web interface and a filesystem mount for exploring and retrieving files from snapshots. The project covers broad capability areas including disaster recovery, repository administration, and s

go-ipfs is an implementation of an IPFS node, providing a distributed filesystem and a content-addressable storage system. It enables the storage and retrieval of data based on unique cryptographic hashes rather than fixed network locations, allowing files to be shared across a peer-to-peer network without a central authority. The system utilizes a distributed hash table and a peer-to-peer gossip protocol to route requests and propagate network state and metadata. It organizes data using a Merkle DAG structure to support efficient deduplication and versioning of content. Capabilities include

This project is an end-to-end encrypted communication client designed for secure messaging and identity management using public-key cryptography. It provides a cryptographic identity manager to verify authenticity across platforms and integrates a local messaging daemon to synchronize encrypted data and handle network communication. The system features a remote encrypted file system that mounts encrypted storage as local directories for direct file interaction. It also includes automated identity provisioning for registering and authenticating new devices and automation bots using cryptograph

macfuse is a framework for implementing custom file systems in user space. It utilizes a macOS kernel extension to bridge the operating system kernel's virtual file system layer to a user-process daemon. This project allows the implementation of file system logic outside of the kernel to improve system stability and simplify development. It enables the mapping of remote data, network resources, or memory to a local folder so they can be accessed through standard system interfaces. The framework supports the development of cross-platform storage by providing a portable interface for consisten

Upspin is a decentralized naming and storage system that provides an end-to-end encrypted file system. It assigns every user a unique identity and organizes files within a global, permissioned namespace where data is encrypted on the client before transmission. The system separates identity resolution from data storage using a public-key identity provider and a key-server architecture. This allows for decentralized identity management and the resolution of usernames to specific directory and storage server addresses. The project includes a hierarchical access control system that manages read

You-Dont-Need-GUI is a curated reference of terminal commands that replace common graphical interface operations with equivalent shell one-liners. It maps everyday GUI actions—file management, archive handling, system monitoring, and network diagnostics—to standard POSIX utilities like find, grep, and awk, all composed as self-contained shell pipelines. The project distinguishes itself by requiring no external dependencies or installations; every solution runs with built-in shell commands and coreutils. Its documentation follows Unix man-page conventions, presenting each command with a

alertify.js is a JavaScript notification library and modal dialog framework. It provides a system for creating customizable alert, confirm, and prompt dialogs to replace standard browser notifications, alongside a non-blocking alert system for unobtrusive status messages. The project features a sequential dialog queue that allows multiple alert and prompt windows to be chained together in a defined order. It also includes a JavaScript error logger that captures global runtime errors and displays them as visible notifications to assist with debugging. The library covers interactive dialog pri

Cowboy is a high-performance HTTP server for Erlang and OTP. It is designed to handle web traffic with low memory usage and can be used as a standalone server or as an embedded networking library integrated directly into an existing application. The project implements modern transport protocols, including HTTP/3, QUIC, and WebTransport, to enable faster connections and bidirectional data streaming. It also functions as a real-time communication server supporting Server-Sent Events for pushing asynchronous updates to clients. Broad capabilities include path and content-type based request rout

BigImageViewer is an Android image zooming library and UI component designed for displaying high-resolution images with pan and zoom capabilities while maintaining low memory usage. It functions as a unified loading wrapper that integrates with third-party providers such as Glide, Picasso, and Fresco to fetch and cache images from network or local sources. The library includes an animated image renderer that supports GIF and WebP formats through header-based detection. It facilitates image gallery navigation using shared element transitions to create smooth visual movement between thumbnails

android-crop is an Android image cropping library and image picker. It provides a reusable view component for selecting and cropping rectangular areas of images within mobile applications. The project includes an interface for launching the system gallery to select photos and a visual tool for users to manually adjust image framing. It manages the process of extracting specific regions of a bitmap and discarding the surrounding pixels.