Open-source alternatives to Openscreen

QuickRecorder is a screen recording software designed for capturing desktops, application windows, and system audio. It functions as a multi-device video recorder and tutorial capture tool, synchronizing video feeds from a computer and connected mobile devices into a single stream. The system distinguishes itself through an alpha-channel video exporter that produces recordings with transparent backgrounds. It also includes a presenter overlay system that renders a floating camera feed over screen captures and a specialized tutorial toolset that provides mouse movement highlighting and a magni

Motionity is a browser-based motion graphics editor and video compositor. It provides a visual timeline for creating animated videos and compositions using a layer-based system and keyframe animation tools. The project features a dedicated Lottie animation renderer, allowing users to import and render vector-based files for scalable motion graphics. It includes specialized tools for keyframe animation, using easing functions to control object movement and property transitions. The platform covers a broad range of production capabilities, including digital asset composition, video clip editin

This project is a mathematical visualization library and a collection of algorithmic art. It serves as a data visualization guide and an interactive visualizer, providing a set of implementations for rendering complex geometric shapes and mathematical concepts through code. The collection focuses on generating aesthetic patterns and precise graphic elements, including fractals, Bezier curves, and Lissajous patterns. It uses recursive functions and iterative algorithms to produce complex geometric structures and algorithmic art. The library covers a range of capabilities including interactive

Screenity is a browser-based screen recorder designed to capture screen activity and audio directly within a web browser. It functions as a privacy-focused capture tool that handles data locally and includes a web-based video editor for basic media refinement. The project distinguishes itself through real-time screen annotation tools, allowing users to draw shapes and arrows or zoom into specific areas during a recording. It also provides specialized privacy controls to blur sensitive information and apply backgrounds to camera feeds. The tool covers a broad range of media capabilities, incl

AndroidNote is a technical knowledge base and reference resource for Android development. It provides comprehensive guidance on application architecture, custom view development, and advanced graphics programming. The project is distinguished by its depth in visual implementation, covering pseudo-3D perspective projections via virtual cameras and complex 2D rendering using Bézier curves and PorterDuff color blending. It also provides detailed methodologies for app modularization and the management of internal libraries through private Maven repositories and JitPack. The reference surface ext

This project is a Chromium-based mobile browser and rendering engine designed for mobile platforms. It functions as a web extension host, allowing the execution of browser extensions within a mobile environment to provide custom functionality. The project distinguishes itself through custom user interface modifications, such as the implementation of a specialized night mode and the relocation of the address bar for improved ergonomics. It also includes a remote debugging interface and protocol that allow an external developer console to connect to a live browser instance for inspecting and tr

VDO.Ninja is a low-latency peer-to-peer media routing service and video streaming platform designed to integrate remote audio and video feeds into professional production workflows. It functions as a WebRTC broadcast integration tool and studio controller, allowing for the direct transmission of high-definition media between publishers and viewers with minimal delay. The platform distinguishes itself through extensive protocol bridging, converting between WebRTC, WHIP, WHEP, SRT, and RTMP to ensure compatibility across diverse network environments and professional studio software. It includes

Hellocharts-android is a data visualization library and charting framework for Android applications. It provides a collection of custom view components used to render datasets as visual elements, such as line, column, and pie charts. The library supports interactive visualizations that allow users to navigate data through touch gestures, including pinching, scrolling, and panning. It also includes built-in capabilities for animating data points and chart elements to create smooth visual transitions during dataset updates. The framework covers a broad range of visualization needs, including c

Cubism is a JavaScript time series visualization library and charting engine designed to render temporal data sequences as visual charts. It functions as a real-time dashboard framework that aggregates multiple time series visualizations into a single interface. The library allows for the creation of live dashboards that automatically update as new information arrives from external sources. It specializes in visualizing sequential data points across a shared temporal axis to facilitate synchronized data analysis and the monitoring of trends and patterns. The framework provides capabilities f

vis is a JavaScript data visualization library used to render interactive networks, timelines, and graphs directly in the web browser. It functions as a relational data mapper and browser-based charting tool, turning complex structured data into dynamic visual patterns to expose entity relationships. The library provides specialized tools for force-directed network graphs, where relational data is represented as interactive nodes and edges. It also includes an interactive timeline component for plotting chronological events and time intervals on a scalable temporal axis. The project covers b

tsparticles is a JavaScript particle engine and canvas visual effects toolkit used to create animated particle systems, interactive backgrounds, and web animations. It functions as a web animation library that provides a set of compatible wrappers for integration into React, Vue, Angular, and Svelte applications. The engine includes pre-built animation patterns for celebratory effects, such as confetti explosions and fireworks. It allows for the creation of custom JavaScript visualizations through a plugin system that enables the development of specialized shapes and behaviors. The toolkit s

gg is a Go 2D graphics library and vector graphics engine designed for programmatic image generation. It provides a canvas rendering API to create custom 2D shapes, paths, and visual assets, which can be exported as PNG and JPG files. The toolkit enables the construction of complex geometry using Bezier curves and custom paths. It supports a variety of rendering operations, including filling and stroking paths, applying linear and radial gradients, and utilizing surface patterns. The library covers a broad range of capabilities, including text rendering with word wrapping and dimension measu

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

Vesktop is an Electron-based desktop client for Discord that runs natively on Linux, offering improved performance and deeper system integration compared to the official web app. It wraps Discord in an Electron shell to provide a lightweight, native desktop experience while adding a privacy protection layer that blocks Discord's access to system-level information such as running processes and hardware details. The client distinguishes itself through comprehensive Linux desktop support, including full Wayland display protocol integration for better performance on modern Linux desktops, screen

Omi is an open-source wearable AI platform that captures audio and screen data to provide real-time conversational assistance and memory. It integrates a wearable hardware development kit with a vector memory database and large language model capabilities to create a persistent digital record of user interactions. The platform is distinguished by its BLE audio streaming pipeline, which transmits raw audio from wearable hardware for real-time transcription and speaker identification. It utilizes a plugin-based agent tool framework that allows AI assistants to autonomously invoke custom functio

This project is an open-source screen and audio capture utility for Windows that functions as a virtual media device. It exposes desktop activity and system sounds as standard input sources, allowing external software to detect and process the data stream as if it were coming from a physical camera or microphone. The tool utilizes a filter architecture to integrate with the Windows multimedia ecosystem, enabling third-party applications to access desktop feeds for recording, broadcasting, or remote transmission. By capturing pixel data directly from the screen buffer and hooking into system a

Glass is an AI desktop assistant and screen-to-LLM interface that processes visual and auditory context from a computer to automate tasks. It functions as a tool for screen analysis, bridging real-time desktop captures with large language models to extract semantic meaning and data insights. The system enables AI-assisted desktop interaction by recording live screen and audio data to provide a persistent digital memory for processing. This allows the application to analyze visible screen information and trigger automation workflows through global keyboard shortcuts.

Le Git Graph is a browser-based tool that displays a visual commit graph for any GitHub repository, showing branch structure and commit history directly in the page. It operates as a single-page application that injects the commit graph into existing repository pages without full page reloads, using OAuth to authenticate with GitHub and authorize API requests for commit data. The tool renders commit nodes and branch lines on an HTML canvas element for smooth, high-performance visualization of complex git histories. It filters the commit graph to show only commits from a selected branch, hidin

This project is an open-source video production suite and non-linear video editor. It provides a multi-track timeline for cutting, splicing, and arranging video and audio clips with frame-level precision, serving as a comprehensive workspace for video post-production. The suite includes specialized tools for keyframe animation, allowing for the creation of 2D and 3D visual effects and motion graphics. It also features a multi-track audio mixer for blending sound sources and adjusting levels to accompany visual content. Capability areas cover a full post-production workflow, including color c

This project is a programmable font system and canvas typography engine that renders a geometric sans-serif typeface using raw coordinate data. It functions as a coordinate-based text animator, allowing for the real-time modification of glyph shapes and font weights. The system distinguishes itself through the ability to extract and manipulate the point coordinates of characters to create morphing effects, wave animations, and shape transitions. It enables dynamic weight interpolation and point-to-line visualizations, moving beyond static font rendering to produce procedural typography. The

Leafer UI is a high-performance HTML5 canvas rendering engine and 2D vector graphics library. It utilizes a hierarchical scene tree to manage shapes, paths, and text, providing a toolkit for building interactive canvas applications and expansive infinite canvases. The engine is designed as a cross-platform canvas toolkit that decouples core logic from the drawing API, allowing it to run across web, mobile, server, and mini-program environments. It distinguishes itself by providing specialized tools for interactive graphic editor development, including hit detection, event bubbling, and transf

JsBarcode is a JavaScript library for generating machine-readable barcodes in both browser and Node.js environments. It supports a wide range of industry-standard symbologies including CODE128, EAN, UPC, CODE39, ITF-14, MSI, Codabar, Pharmacode, and GS1-128, with automatic check digit calculation for formats that require it. The library renders barcodes to HTML canvas elements, scalable SVG graphics, or image elements, and provides a chainable API for creating multiple barcodes sequentially with individual options. It includes automatic checksum computation for EAN, UPC, ITF-14, and MSI forma

This project is a cross-platform mobile graphing library designed for rendering high-performance animated line charts and data visualizations. It functions as a canvas-based data visualization system and interactive charting component for mobile applications. The library focuses on animated data visualization, using interpolation to create smooth visual transitions between different data sets. It utilizes a GPU-accelerated graphics engine to maintain high frame rates and fluid transitions during data updates. The capability surface includes interaction systems for tracking pan gestures and d

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

Flame is a 2D game engine and framework for Flutter. It provides a component-based architecture to organize scene entities and manage their lifecycles through a structured hierarchy of game objects, coordinated by a consistent game loop. The engine includes a graphics library for rendering animated sprites, particle effects, and external textures. It features a 2D physics integration layer that supports rigid body dynamics and collision detection between entities. The framework covers additional capabilities for game engineering, including user input capture for gestures and gamepads, audio

This project is a browser-based, real-time multiplayer action game where players control a character on a 2D canvas to absorb objects and grow in size. It utilizes a Node.js game server and WebSockets to synchronize game state, player movement, and chat across all connected participants. The application is delivered as a dockerized game application, ensuring consistent hosting and deployment across different cloud environments through containerized server environments. The system implements an authoritative server model that processes all game logic and physics to prevent cheating and mainta