Open-source alternatives to UPic

Flameshot is a cross-platform desktop screenshot tool and image annotation utility. It provides the ability to capture full displays or specific screen regions and save them as image files. The software features a built-in editor for adding arrows, shapes, text, and markers to screen captures for visual documentation. It also includes functionality for transferring captured and annotated images directly to external hosting services for remote storage and sharing. The utility includes a command line interface for automating screen captures, managing application settings via scripts, and trigg

Mjolnir is a macOS automation framework and extensible scripting engine. It provides a system for creating custom productivity workflows, managing application states, and controlling the macOS desktop interface programmatically. The project functions as a global hotkey manager that binds keyboard shortcuts to trigger automated scripts across the operating system. It includes a macOS application controller to inspect active windows and manage system-wide user interface interactions. The environment supports extensibility through a pluggable package management system, allowing for the installa

GoldenDict is an offline and online dictionary reader that retrieves word definitions from local files and web sources, displaying entries with full formatting, images, and hyperlinks through an embedded WebKit rendering engine. It reads dictionary files in Babylon, StarDict, Dictd, and ABBYY Lingvo formats without requiring conversion, and supports querying arbitrary websites via user-defined URL templates. The application integrates with the system through global hotkeys and clipboard monitoring, allowing users to trigger lookups or translate selected text in any other application without m

PicGo is a cross-platform desktop utility designed to automate image hosting and asset management. It functions as a pipeline-based engine that processes image inputs—such as local files, base64 strings, or clipboard data—through a configurable sequence of transformations and uploads to various cloud storage providers. The application distinguishes itself through a modular, plugin-based architecture that allows users to extend core functionality without modifying the main binary. By utilizing a lifecycle hook system, developers can register custom logic to intercept and modify data at specifi

PasteMD is a clipboard-based document processor and productivity tool designed to convert Markdown or HTML content into formatted office documents. It transforms markup and mathematical formulas from the clipboard into rich text for direct insertion into word processors and spreadsheets. The system functions as a style orchestrator, using reference documents and templates to apply specific fonts, colors, layouts, and margins to the converted text. This allows for the customization of output appearances to match specific document requirements. The tool handles technical document composition b

obs-websocket is a WebSocket remote control plugin and extension for OBS Studio. It functions as a JSON-RPC network API that allows external devices and applications to manage software settings, scenes, and streaming operations. The project provides a standardized network protocol that enables remote command execution and event-driven state synchronization. It secures these connections using salted-challenge authentication to verify client identity. The interface covers a broad range of production capabilities, including scene and source management, audio level control, and output management

Lsky Pro is a self-hosted image hosting platform and digital asset management system. It provides a web application for uploading and organizing images into albums, while functioning as an image hosting API and processing gateway for programmatic asset management. The system distinguishes itself by supporting monetized storage services, integrating payment gateways and coupon systems to manage user subscriptions and storage quotas. It features a decoupled storage architecture that integrates with S3, OSS, WebDav, and other cloud providers to separate file storage from the application server.

CloudSaver is a multi-cloud file transfer manager and storage aggregator designed to discover remote resources and save them directly to cloud drives. It functions as a cloud file downloader and management platform that enables the movement of data between different cloud storage providers without requiring files to be downloaded to a local device first. The system uses OAuth authentication to manage secure connections to third-party cloud drives, facilitating direct server-to-server data transfers. It incorporates asynchronous streaming to move data between remote sources and destinations, p

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

The project defines an open protocol specification for reliable, chunked, and resumable file transmission over standard HTTP infrastructure. It standardizes client-to-server file transfers across networks, enabling interrupted uploads to resume seamlessly without data loss or retransmitting completed chunks. The protocol manages file upload lifecycles through resource-based session initialization, offset-based byte range tracking, and cryptographic checksum verification to validate incoming data blocks. Additional capabilities include parallel chunk concatenation for joining multiple partial

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.

Rubick is a cross-platform desktop launcher built on Electron that provides a keyboard-activated search interface for quickly finding and launching local applications, files, and folders. It functions as a plugin-based desktop utility, treating each plugin as an npm package that can be installed, removed, and managed through standard npm tooling, with a built-in marketplace for discovery and lifecycle management. The project distinguishes itself through its support for self-hosted and intranet-only deployment, enabling enterprise environments to run the toolbox entirely within an internal net

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

s3cmd is a command-line client for Amazon S3 and S3-compatible cloud storage services. It provides a unified terminal interface for managing buckets and objects, transferring files, and synchronising directories. All operations are performed over HTTPS with HMAC-SHA256 request signing and TLS encryption to secure data in transit. The tool supports incremental transfers using S3 ETags, so only new or modified files are sent during sync. Large files are handled with multipart upload chunking, reducing the impact of failures and improving throughput. Directory synchronisation works recursively w

This is a command-line client for managing multiple Aliyun Drive accounts from a single interface. It authenticates each account via an OAuth browser-based login flow, stores tokens separately, and allows switching between active sessions. The tool unifies local and cloud file paths under a common tree structure, enabling consistent browsing, upload, download, and organization across all connected accounts. The client implements several techniques to accelerate and control file transfers. Downloads are split into chunks and transferred concurrently across multiple streams, with progress track

Melody is a cross-platform music downloader and archive manager designed to retrieve audio tracks from various video and audio websites for local or cloud storage. It functions as a playlist synchronizer that automatically copies songs from online playlists to personal storage via scheduled background tasks. The system includes a music track recovery mechanism that identifies unplayable or deleted songs in a playlist and replaces them with functional versions found in public web resources. It utilizes a cloud storage media pipeline to stream discovered audio files from source servers through

GeekDesk is a Windows desktop quick-launch panel that opens with a global hotkey or middle-click, providing instant access to files and applications. Built as a native Win32 application, it renders its interface directly using Windows window and graphics APIs without relying on any web or cross-platform framework. The launcher integrates with the Everything search engine to perform full-disk file searches and display results directly within the panel. It also includes a timed reminder scheduler for setting up one-time or recurring notifications, and supports extensive visual customization thr

BaiduPCS-Go is a Go library and cloud storage client that provides a programmable interface for interacting with Baidu Cloud Storage. It functions as an API wrapper and remote file manager, allowing users to manage files, folders, and accounts without using a web browser. The project includes specialized utilities for extracting direct download URLs to bypass web downloaders and managing multiple cloud identities through session tokens and cookies. It also enables remote file transfers, allowing content from shared links to be moved directly into a cloud account. The system covers a broad ra

Flutter File Picker is a cross-platform file selection library that integrates native operating system dialogs into applications. It allows users to pick single or multiple files from device storage or connected cloud services, select directories, and open save-as dialogs to export data. The library handles file operations by invoking host platform system dialogs directly without custom UI rendering. It supports filtering selectable files through preset media categories or custom file extensions, loading file bytes directly into memory as raw data, and streaming large files through increment

Phoenix is a macOS workspace automator and window manager that uses a JavaScript scripting engine to control system-level behaviors. It functions as an AppleScript automation bridge, allowing users to programmatically manipulate application states, window geometry, and desktop interactions. The project enables the creation of custom workflows by binding keyboard shortcuts to JavaScript functions. This allows for the automation of complex system actions, such as organizing application layouts across multiple screens and managing virtual spaces. Its capability surface covers window and applica

bypy is a Python client for interacting with Baidu Yun cloud storage via its official API. It functions as both a library for programmatic integration and a command-line manager for organizing and listing files within a cloud account. The project features a multi-process transfer tool that utilizes parallel processing to accelerate high-volume uploads and downloads. It provides bidirectional directory synchronization to align content between local file systems and remote cloud storage by identifying missing or outdated files. The tool covers recursive file transfers, automated cloud data bac

Formidable is a streaming multipart form parser and file upload handler for Node.js. It provides the utility to process incoming HTTP requests containing a mix of text fields and files, converting them into structured data. The project is designed as a multipart data streamer that can pipe incoming uploads directly to the local filesystem or cloud storage providers. It includes a cloud storage upload bridge to route streams to services such as AWS S3, Azure, or GCP without requiring intermediate local disk storage. The tool incorporates server-side file validation and security controls, incl

Captura is a desktop screen recording and screenshot utility designed to capture video, webcam feeds, and system audio into multimedia recordings. It functions as a recording suite that can also be operated as a command line video recorder, allowing users to trigger and manage capture workflows via terminal commands. The software distinguishes itself by recording user input, such as mouse movements and keystrokes, as visual overlays on top of the captured video. It further supports automated workflows through the integration of system-level hardware media keys, enabling recording state change

Dropbox-Uploader is a Bash-based command-line client for managing files on Dropbox. It provides a full set of file operations including upload, download, copy, move, rename, delete, directory creation, and listing, all through shell scripts that use curl to interact with the Dropbox API. The tool authenticates via OAuth tokens and includes a chunked upload mechanism for handling large files reliably. The project distinguishes itself with an interactive shell interface that lets users browse and manage remote files without re-entering commands, and a file-name-based password derivation system

Everywhere is a desktop AI assistant that understands whatever is on your screen and can act across applications without requiring screenshots or manual context switching. It reads structured UI data through accessibility and automation APIs to perceive the active application and visible content, then provides context-aware help, summaries, translations, and answers to natural language questions about what you are viewing. The tool distinguishes itself by combining on-screen content analysis with a multi-LLM agent platform that routes requests to providers like OpenAI, Anthropic, and local mo

The Google Workspace CLI is a command-line interface and Google API client designed to automate tasks across Google Workspace services. It functions as a cloud productivity automator that uses the Google Discovery Service to dynamically generate command structures and parameter requirements at runtime. The project distinguishes itself by providing a specialized AI agent toolset, exposing a server over standard input and output to provide structured tool definitions and skills for AI clients. It includes security layers for AI content sanitization to protect against prompt injection and utiliz

WinMemoryCleaner is a Windows RAM optimizer and memory management utility. It reclaims physical memory by flushing standby lists, working sets, and file caches using native Windows system functions. The tool operates across several modes, including a portable application with a system tray monitor, a command-line interface for script integration, and a headless system service for continuous background operation. It supports instant optimization via customizable global keyboard shortcuts. Automation capabilities include scheduling regular cleanups based on fixed time intervals or triggering t