Open-source alternatives to Holder

react-blessed is a React renderer for the blessed library that enables the construction of interactive command-line interfaces using a component-based architecture. It functions as a terminal user interface framework that maps a virtual component tree to a terminal environment, allowing React's declarative state management to control blessed terminal widgets and layout nodes. The system supports the integration of custom renderers through a dedicated creation function to change how nodes are instantiated. It provides a mechanism to retrieve original terminal library objects through references

This project is a relational SQL sample database and synthetic testing dataset. It provides a standardized data model of a fictional digital media store, encompassing business entities such as artists, albums, tracks, customers, and invoices. The dataset is designed as a cross-dialect SQL collection, using compatible scripts to ensure consistent data seeding and environment parity across different database server engines. It combines imported metadata with fictitious personal details to create realistic records for software prototyping and demonstrations. The project covers capabilities for

This project is a community-maintained, open-access directory of high-quality public datasets. It serves as a centralized reference point for researchers, developers, and data scientists to locate reliable information sources across a wide spectrum of industries and scientific fields. By providing a structured index, the repository facilitates the discovery of data necessary for exploratory analysis, machine learning model training, and the development of data-intensive applications. The directory distinguishes itself through a lightweight, platform-agnostic approach to resource indexing that

A curated list of free public APIs across 48 categories — searchable, community-maintained, with a free JSON API.

This project is a community-curated directory of REST and GraphQL service endpoints designed to assist developers in discovering and integrating third-party data sources. It functions as a centralized registry where external services are organized by domain to facilitate rapid software prototyping and application development. The registry relies on a peer-reviewed contribution model, utilizing distributed version control to manage updates and ensure the accuracy of listed endpoints. To maintain high data quality, the project employs schema-based validation for all incoming submissions and com

A collection of unofficial apis. Designed to inspire your next Friday night hack

AsyncDisplayKit is an asynchronous UI framework and performance library for iOS. It provides a collection of performant alternatives to standard views, allowing developers to build responsive interfaces by offloading layout and rendering tasks to background threads. The framework is centered around a declarative layout engine based on a flexbox model, which calculates element positions and sizes asynchronously. It utilizes a node-based abstraction to wrap native views, enabling the instantiation and configuration of UI hierarchies on background threads to prevent main thread blocking. The sy

Lazyload is a JavaScript plugin that defers the loading of images until they scroll into the viewport, using the browser's Intersection Observer API to detect visibility. It is designed to speed up initial page load and save bandwidth by delaying off-screen images, and includes a jQuery-compatible wrapper for drop-in integration with existing jQuery code. The plugin distinguishes itself through support for responsive images, loading different sources based on screen size, and a blur-up placeholder effect that shows a low-resolution image that transitions into the sharp version once fully load

Clappr is an HTML5 web media player and plugin-based framework used to render video and audio across different web platforms. It functions as a playback engine supporting adaptive bitrate streaming through HLS and DASH protocols to ensure smooth media delivery. The project is distinguished by a modular architecture that allows developers to extend player functionality and add support for new media formats via a plugin system. It also includes a dedicated controller for managing digital rights management license requests to secure premium content. The player covers a broad range of capabiliti

This project is an open-source visual dataset and machine learning image library. It provides large-scale collections of high-quality photos and metadata designed for training computer vision models and conducting research into image categorization and retrieval. The repository specifically offers semantic search datasets that pair images with AI and human-generated keywords to analyze search intent and visual metaphors. It also serves as an image metadata archive, providing structured EXIF data and camera specifications for technical analysis. The available data covers broad capability area

This project is a collection of reference guides and reusable patterns for implementing CSS layouts, typography, and visual effects. It serves as a library of style snippets and implementation guides for structuring web pages and creating common user interface patterns. The repository provides specialized galleries for visual effects and UI component patterns. These include techniques for creating glassmorphism, complex geometric shapes, and interactive elements such as accordions, tooltips, and animated tab indicators. The project covers a broad range of frontend capabilities, including res

GitHub Profile Trophy is a service that generates SVG images of achievement trophies based on a GitHub user's profile statistics, designed for embedding in README files. It fetches profile data through the GitHub GraphQL API, renders the trophies server-side as SVG markup, and serves them directly to clients, with a Redis-based caching layer to reduce repeated API calls and speed up subsequent requests. The service can be deployed as a self-hosted HTTP server running on the Deno JavaScript runtime, packaged with Docker for consistent local and CI environments. It also offers a GitHub Action w

This project is a comprehensive front-end development guide and roadmap designed to help engineers master the skills and professional standards required for modern web development. It serves as a technical reference for mastering HTML, CSS, and JavaScript, providing structured learning paths and a map of the professional competencies needed to transition from a beginner to a professional web engineer. The resource functions as a categorized directory and ecosystem overview of the JavaScript landscape. It catalogs industry-standard frameworks, libraries, and utilities, offering specific recomm