Open-source alternatives to AndroidNote

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

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

Moveable! Draggable! Resizable! Scalable! Rotatable! Warpable! Pinchable! Groupable! Snappable!

Canvas is a headless vector graphics engine and two-dimensional graphics rendering library built on a native graphics library with zero system dependencies for server-side drawing. It provides a programmatic shape construction and manipulation library supporting bezier curves, boolean operations, and native rendering without requiring a display server. The library renders shapes, paths, text, and images onto virtual memory surfaces and off-screen drawing areas for server-side image generation, vector animation rendering, and PDF generation. It supports path boolean operations to compute comp

ImageSharp is a .NET image processing library and manipulation framework used for decoding, encoding, and modifying digital images. It functions as a comprehensive toolkit for resizing, cropping, and applying pixel-level filters while managing color profiles and pixel data across various file formats. The project integrates a 2D vector graphics engine and a typography rendering engine to draw geometric shapes, paths, and complex stylized text onto images. It also includes a geometry boolean operation library for calculating intersections, unions, and differences between complex polygons and c

SkiaSharp is a cross-platform 2D graphics engine and .NET wrapper for the Skia Graphics Library. It provides a rendering API for drawing shapes, paths, and bitmaps across mobile, desktop, and server environments, functioning as both a raster graphics library and a hardware-accelerated drawing API. The project enables the creation of custom vector drawings and dynamic UI components through precise control over strokes, fills, and mathematical transformations. It also supports programmatic image manipulation, allowing for the loading and modification of pixel arrays. Its capabilities cover bas

opentype.js is a JavaScript library for reading, writing, and manipulating OpenType, TrueType, and WOFF font files in both browser and server environments. It functions as a font parser and generator capable of extracting glyph data and metadata or creating new font files by defining glyph paths and metadata programmatically. The project provides specialized utilities for modifying font variation tables to control variable font properties and processing color layers and palettes via COLR and CPAL tables. It also includes a Bezier path generator that converts font glyphs and text strings into

This project is a comprehensive collection of web development reference guides and technical cheat sheets. It provides a curated set of markdown-based documentation designed to help developers quickly locate syntax patterns and API examples for common web technologies and programming languages. The repository serves as a specialized reference library covering several distinct technical domains. It includes extensive guides for CSS, focusing on selectors, Flexbox, Grid, and responsive layout properties, as well as a DevOps command reference for Docker, Kubernetes, AWS, Ansible, and general she

LearningNotes is a technical knowledge base and engineering study guide focused on Android framework internals, system architecture, and mobile performance optimization. It serves as a reference for analyzing the Android boot sequence, process bootstrapping, and system service initialization. The project provides detailed guides on mobile performance, including strategies for reducing memory footprints, identifying memory leaks, and optimizing image decoding. It further covers Android inter-process communication using AIDL and the Binder kernel driver, as well as software architecture manuals

maptalks.js is a JavaScript map rendering library and web map interaction framework used to render interactive 2D and 3D geographic data on a web canvas. It functions as a 3D geospatial engine supporting 3DTiles and GLTF formats, a GeoJSON visualization tool, and a spatial analysis library. The project distinguishes itself through high-performance rendering and dynamic geospatial animation, including the ability to simulate traffic flow and execute smooth visual transitions for map elements. It provides comprehensive tools for interactive geometry editing, allowing users to draw and modify ve

react-konva is a declarative React canvas graphics library and 2D vector graphics framework. It serves as a rendering engine and interactive canvas toolset that allows for the drawing and management of complex 2D shapes and graphics using a React component model. The library maps reactive component trees to an underlying object-oriented graphics scene graph, enabling the synchronization of visual states with application data. It provides specialized tools for building interactive graphical interfaces, including support for multi-touch gestures, drag-and-drop functionality, and real-time trans

Component is a modularization, navigation routing, and service location framework designed for Android applications. It provides architectural primitives that split large codebases into decoupled feature modules, enabling independent module execution and automated module lifecycles during startup and shutdown. Compile-time annotation processing generates routing metadata and proxy classes to eliminate manual configuration overhead while supporting interface-based service discovery and type-safe screen transitions. The framework manages cross-module communication and navigation through a centr

A curated list of useful open-sound-control applications, libraries, resources and shiny things

A list of awesome tools, ideas, prompt engineering tools, colabs, models, and helpers for the prompt designer playing with aiArt and image synthesis. Covers Dalle2, MidJourney, StableDiffusion, and open source tools.

Awesome and Best FastHTML Resources For Python Developers

This project serves as a comprehensive development guide for the jQuery library, focusing on best practices and techniques for efficient web frontend development. It provides a structured collection of patterns for manipulating the document object model, managing dynamic content, and streamlining asynchronous data requests. The guide emphasizes performance and maintainability by detailing strategies for optimizing element selection, implementing event delegation, and managing element state. It covers methods for resolving library conflicts, standardizing layout dimensions, and controlling bro

Awesome TensorFlow.js - A curated list of dedicated resources to master TensorFlow.js

Awesome Explainable AI (XAI) and Interpretable ML Papers and Resources

A curated list of the best resources in the Cassandra community.

A curated list of software, hardware, and other resources to create music.

A curated list of awesome tools to create, edit and display sheet music.

A collection of resources covering different aspects of Gatling load testing tool usage.

This project is a curated knowledge base and technical reference for professional web styling. It serves as a comprehensive guide to modern CSS best practices, focusing on techniques that leverage native browser capabilities to create efficient, maintainable, and scalable stylesheets. The collection emphasizes the use of declarative style logic and modern layout engines to replace brittle, imperative approaches. By prioritizing native pseudo-class state management, logical property mapping, and relative unit scaling, the guide demonstrates how to build responsive interfaces that remain consis

HelloGitHub is a centralized discovery platform and technical knowledge repository designed to help developers identify high-quality open-source projects, libraries, and infrastructure. It functions as a structured directory that aggregates specialized development tools and educational materials, organizing them by technical domain to facilitate efficient resource discovery and professional development. The platform distinguishes itself through a community-driven curation workflow, where manual editorial oversight filters the broader software ecosystem into thematic collections. This content

A curated list of awesome links and software libraries that are useful for robots.

👉 CARLA resources such as tutorial, blog, code and etc https://github.com/carla-simulator/carla

Hive is an artificial intelligence workflow automation engine and development platform designed for building and deploying autonomous agents. It provides a framework for orchestrating complex, multi-step business processes by coordinating tasks across multiple specialized agents using directed graph structures. The platform distinguishes itself through a focus on production-grade reliability and state management. It maintains persistent execution context and conversation history on disk, enabling crash recovery and continuity for long-running automated sessions. Furthermore, it incorporates a