Open Source Libraries - Page 23
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Hiring Without Whiteboards
Companies that don't have a broken hiring process
Hiring-without-whiteboards is a curated list of companies and teams that avoid traditional "whiteboard" interviews, instead focusing on realistic and practical evaluation methods. In this context, "whiteboards" symbolizes outdated or unhelpful computer science trivia questions often criticized in technical interviews. The project highlights organizations that emphasize interviewing techniques more aligned with actual day-to-day work, such as collaborative problem-solving, pair programming, or take-home assignments. It encourages a shift away from brainteasers, riddles, or puzzle-based interviews, which can create unnecessary barriers for candidates. The repository not only provides a resource for job seekers looking for fairer interview processes but also offers guidance for companies seeking to improve their hiring practices. With community contributions, it continues to grow as a reference for employers and applicants who value practical, respectful, & effective technical evaluation. -
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Hoa\Ruler
The Hoa\Ruler library.
Hoa is a modular, extensible, and structured set of PHP libraries. Moreover, Hoa aims to be a bridge between the industrial and research worlds. This library allows to manipulate a rule engine. Rules can be written by using a dedicated language, very close to SQL. Therefore, they can be written by a user and saved in a database. -
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HyperUI
Free Tailwind CSS v4 components for your next project
HyperUI is a large, copy-and-paste library of Tailwind CSS components aimed at speeding up interface building without adding heavy JavaScript. It groups components by common product needs—navigation, hero sections, pricing, forms, cards, tables, and full e-commerce flows—so teams can assemble pages quickly from consistent building blocks. Each snippet is written as semantic HTML with Tailwind utility classes, making it easy to customize spacing, color, and typography through a project’s Tailwind config. The components are responsive by default, using grid and flex patterns that adapt cleanly from mobile to widescreen layouts. Accessibility is treated pragmatically: markup favors proper roles and focus states, and most interactive behaviors can be wired with lightweight libraries or framework code if desired. Because everything is plain markup, adoption is frictionless in any stack (React, Vue, Svelte, Rails, Laravel), and designers can tweak styling without refactoring component logic. -
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IHUB Plugins
A set of Gradle plugins that greatly simplify project management
A collection of Gradle plugins designed to simplify project setup, versioning, dependency management, Spring Boot configuration, GraalVM support, and more, tailored for IHub’s monorepos and enterprise workflows. -
Gen AI apps are built with MongoDB AtlasMongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
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IMAP Library for Laravel
Integrate both the native php-imap module and an extended custom imap
Laravel IMAP is an easy way to integrate both the native php-imap module and an extended custom imap protocol into your Laravel app. This enables your app to not only respond to new emails but also allows it to read and parse existing mails and much more. PHP-IMAP is a wrapper for common IMAP communication without the need to have the "native" php-imap module installed/enabled. The IMAP protocol is completely integrated and therefore supports all IMAP commands including the IDLE operation and the "new" oAuth authentication process. You can enable the php-imap module in order to handle edge cases, and improve message decoding quality, and is required if you want to use legacy protocols such as pop3. -
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Images.jl
An image library for Julia
JuliaImages (source code) hosts the major Julia packages for image processing. Julia is well-suited to image processing because it is a modern and elegant high-level language that is a pleasure to use, while also allowing you to write "inner loops" that compile to efficient machine code (i.e., it is as fast as C). Julia supports multithreading and, through add-on packages, GPU processing. JuliaImages is a collection of packages specifically focused on image processing. It is not yet as complete as some toolkits for other programming languages, but it has many useful algorithms. It is focused on clean architecture and is designed to unify "machine vision" and "biomedical 3d image processing" communities. -
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Index Advisor
PostgreSQL Index Advisor
index_advisor is a PostgreSQL extension developed by Supabase that suggests index optimizations based on query performance. It passively monitors query patterns and recommends indexes to improve performance without requiring deep database expertise. This tool helps developers and DBAs reduce query latency and improve efficiency in production environments. -
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Iron-Session
Secure, stateless, and cookie-based session library for JavaScript
Iron-Session is a secure, stateless, and cookie-based session library for JavaScript, enabling developers to manage user sessions without server-side storage. -
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JavaScript Questions
A long list of (advanced) JavaScript questions, and their explanations
This repo is a popular collection of JavaScript questions with detailed, approachable explanations that help you understand why the language behaves the way it does. It covers tricky corners—hoisting, closures, coercion, event loop, prototypes, this binding, async/await, and more—through short prompts followed by illuminating answers. Explanations often include runnable snippets and step-through reasoning so you can replicate results locally. The content is curated to sharpen mental models rather than memorize trivia, making it valuable for interviews and day-to-day debugging alike. Because questions range from beginner to advanced, you can use it as a progressive study set or a quick refresher before assessments. It’s equally helpful for mentors: the questions can anchor study groups, workshops, or code-review discussions. -
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JavaScript and React Patterns
Repo related to the FrontendMasters course on JavaScript and React
JavaScript and React Patterns showcases idiomatic patterns and anti-patterns for building React applications, focusing on readability, performance, and maintainability. It translates fuzzy best practices into concrete examples—how to compose components cleanly, manage state thoughtfully, and avoid foot-guns with effects and memoization. The guidance leans on modern React paradigms like hooks, context, custom hooks, and component composition to replace older, heavier patterns. Performance considerations appear throughout, such as when to memoize, how to minimize re-renders, and where to split components. Each example is concise and focused, making it easy to apply to real codebases without wading through long essays. The result is a practical field guide you can reference during code reviews or when sketching a component architecture. -
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Jikan REST
The REST API for Jikan
Jikan REST is an unofficial RESTful API for MyAnimeList.net, providing access to anime, manga, and user data by scraping the website. It allows developers to integrate MyAnimeList data into their applications without relying on the official API. -
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Jodd
Jodd! Lightweight, Java, zero dependencies, use what you like
Jodd is a set of micro-frameworks and developer-friendly tools and utilities. Code-things-done. Great performances. Tiny dependencies. Use what you like. Welcome to the Jodd, a unique, alternative world of Java. You can find here some micro-frameworks and some handy tools. Nothing more, nothing less. The decision which component is promoted is based on the Maven Central Repo statistics. Version v5 contains remaining libraries and frameworks. They are in maintenance mode. -
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JsAction
JsAction is a small event delegation library
JSAction is a JavaScript framework developed by Google that provides a structured, event-driven architecture for managing user interactions in large-scale web applications. It simplifies event handling by declaratively binding actions to DOM elements through HTML attributes, enabling clean separation between markup and behavior. JSAction helps improve performance, maintainability, and reliability by minimizing the use of inline scripts and global event listeners. It is especially useful in complex front-end environments where efficient event delegation and well-defined interaction flows are crucial. -
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Jspicl
A Javascript to PICO-8 Lua transpiler
Jspicl is a JavaScript to PICO-8 Lua transpiler that allows developers to write their game logic in JavaScript, which is then transpiled into the Lua subset supported by PICO-8. This enables developers more comfortable with JavaScript to create games for the PICO-8 platform. -
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Julia.jl
Curated decibans of Julia programming language
Julia.jl is a curated collection of knowledge resources for the Julia programming language, designed to support high-performance numerical analysis and computational science. The repository aggregates diverse content across domains such as mathematics, physics, data science, optimization, machine learning, and supercomputing. It functions as a structured index, helping developers, researchers, and learners easily find materials to deepen their understanding of Julia’s ecosystem. The project emphasizes community contributions, encouraging users to expand and refine the resource pool. With a wide range of topic-focused documents, it provides both academic and practical references for applied research and development. By centralizing these resources, Julia.jl supports continuous learning and growth for users at all experience levels in the Julia community. -
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KMP NativeCoroutines
Library to use Kotlin Coroutines from Swift code in KMP apps
A library to use Kotlin Coroutines from Swift code in KMP apps. Both KMP and Kotlin Coroutines are amazing, but together they have some limitations. The most important limitation is cancellation support. Kotlin suspend functions are exposed to Swift as functions with a completion handler. This allows you to easily use them from your Swift code, but it doesn't support cancellation. Besides cancellation support, ObjC doesn't support generics on protocols. The library consists of a Kotlin and Swift part which you'll need to add to your project. -
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KMongo
[deprecated] KMongo - a Kotlin toolkit for Mongo
KMongo was created in 2016, when there was no official MongoDB Kotlin driver. KMongo features are available via Kotlin extensions - you use transparently the core MongoDB java driver API (both sync and reactive streams (ie async) drivers are supported). -
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Kalendar
Kalendar is a powerful and customizable calendar library for Android
The Kalendar library is a powerful tool for creating calendar components in Android apps using Jetpack Compose. It provides customizable calendar views with various features and functionalities. The Kalendar library simplifies the process of creating interactive and visually appealing calendars in Android apps. With its flexible configuration options, event integration, and interactive callbacks, you can easily build powerful calendar components that enhance the user experience. -
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Kamon Telemetry
Distributed Tracing, Metrics and Context Propagation for applications
Kamon Telemetry is a set of libraries for instrumenting applications running on the JVM. With Kamon Telemetry you can collect metrics, propagate context across threads and services, and get distributed traces automatically. The best way to get started is by following our installation guides and taking it from there. Have fun with Kamon. Monitor your backend applications, fix performance issues, and get alerted when problems happen. All without being a monitoring expert. Everybody starts monitoring with logs because they are there by default. Just connect to your server and start tailing. But logs have a hard time showing you the overall response times for your application, or whether certain calls to the database are happening in sequence or parallel (among a million other things). -
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Kendo UI Core
An HTML5, jQuery-based widget library for building modern web apps
Kendo UI is everything you need to build sites and apps with HTML5 & JavaScript. Kendo UI Core is the free and open-source version of Kendo UI that provides access to the web's best UI widgets and key framework features, essential for developing great experiences for the web and mobile. Kendo UI Core is a free and open-source subset of Kendo UI. The following table details the widgets and features available in Kendo UI Core, as well as the additional features available via a commercial Kendo UI license. -
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Keypress
A keyboard input capturing utility
Keypress is a JavaScript utility (Apache‑2.0) for defining keyboard combos, sequences, and custom modifiers. Popular in game development and interactive web apps, it supports keydown/keyup, multiple modifiers, sequence combinations, and offers ~9 KB footprint with zero dependencies. -
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Kint
Kint - Advanced PHP dumper
Kint is a PHP debugging tool that provides developers with an intuitive and highly informative way to inspect variables and data structures. It replaces standard debugging methods like var_dump() and print_r() with a more readable and structured output, highlighting key details and nesting. Kint is designed to simplify debugging by automatically detecting variable types and presenting them in a clean, interactive format. -
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KnpPaginator Bundle
SEO friendly Symfony paginator to sort and paginate
KnpPaginatorBundle is a Symfony bundle that helps paginate large sets of data from Doctrine, arrays, or custom queries. It provides clean pagination controls and works seamlessly with Twig for rendering pagination elements. -
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Kotlin Coroutines for Retrofit
Kotlin Coroutines await() extension for Retrofit Call
This is a small library that provides the Kotlin Coroutines suspending extension Call.await() for Retrofit 2. Based on kotlinx.coroutines implementation. Kotlin 1.2 and experimental coroutines are not supported anymore, but you can use version 0.13.0 for old projects. -
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Kotlin Language Server
Kotlin code completion, diagnostics and more for any editor/IDE
A language server that provides smart code completion, diagnostics, hover, document symbols, definition lookup, method signature help and more for Kotlin.