Open Source TypeScript Libraries
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TypeScript Libraries
View 77 business solutionsBrowse free open source TypeScript Libraries and projects below. Use the toggles on the left to filter open source TypeScript Libraries by OS, license, language, programming language, and project status.
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ziwei-doushu
Chinese astrology chart calculation engine
Ziwei Doushu is an open-source Chinese astrology chart calculation engine based on the traditional Zi Wei Dou Shu system and Ni Haixia's Tian Ji teachings. It generates birth charts using calendar calculations, star placements, and traditional astrological rules. The software includes the Four Transformations system, chart pattern recognition, and a knowledge base of classical interpretations. Birthplace coordinates and historical daylight saving adjustments support true solar time calculations. Its extensive interpretation dataset covers hundreds of thousands of chart combinations across 13 analytical dimensions. Users can explore charts through a Next.js demonstration interface and access historical reference materials. The project provides reusable algorithms and structured data for developers researching traditional Chinese divination systems. -
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TikTok Live Connector
Node.js library to receive live stream events
TikTok Live Connector is a Node.js library for receiving real-time TikTok LIVE events from TikTok’s internal Webcast push service. It can connect to a live stream by username and listen for events such as comments, gifts, member joins, follows, shares, questions, likes, subscriptions, viewer updates, and battles. The library does not require user credentials for basic live chat connection, which makes it useful for overlays, chat readers, bots, dashboards, alerts, and livestream interaction tools. It is a reverse-engineering project rather than an official TikTok production API, so developers should expect platform changes and occasional breakage. Recent development has focused on a more modular TypeScript architecture and expanded event schema support. It is best used for experiments, prototypes, creator tools, and non-critical realtime TikTok LIVE integrations. -
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NoSignups
A list of tools that are open-source, in-browser
NoSignups, formerly FckSignups, is a curated directory of browser-based open-source tools that can be used without creating accounts. The project focuses on utilities that avoid registration walls, email collection, analytics, and unnecessary tracking. Its website is built with React and TypeScript and organizes tools across productivity, development, design, writing, privacy, media, education, and other categories. Entries include descriptions, searchable tags, source links, licenses, star counts, and recommendation metadata when available. Featured listings highlight unusual or particularly useful tools within the growing catalog. The repository also accepts community submissions, provided the suggested software works without mandatory registration and fits the project's privacy-oriented philosophy. -
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SponsorBlock
Skip YouTube video sponsors (browser extension)
SponsorBlock is an open-source crowdsourced browser extension and open API for skipping sponsor segments in YouTube videos. Users submit when a sponsor happens from the extension, and the extension automatically skips sponsors it knows about using a privacy-preserving query system. It also supports skipping other categories, such as intros, outros, and reminders to subscribe, and skipping to the point with highlights. The extension also features an upvote/downvote system with a weighted random-based distribution algorithm. Once one person submits this information, everyone else with this extension will skip right over the sponsored segment. SponsorBlock is a crowdsourced browser extension that let's anyone submit the start and end time's of sponsored segments of YouTube videos. -
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Bilibili Evolved
Powerful Bilibili Enhanced Script
Bilibili Evolved is a browser extension designed to enhance the user experience on the Bilibili video platform by adding customization and usability improvements. It provides a wide range of features that modify the interface, improve playback controls, and add additional functionality not available in the original platform. The extension is highly customizable, allowing users to enable or disable features based on their preferences. It also includes performance optimizations and visual enhancements that improve the overall viewing experience. The project is actively maintained and updated to adapt to changes in the platform. It is particularly popular among users who want a more personalized and efficient browsing experience. Overall, Bilibili-Evolved transforms the standard Bilibili interface into a more powerful and user-friendly environment. -
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baoyu-skills
Skills shared by Baoyu for improving daily work efficiency with Claude
baoyu-skills is a comprehensive plugin-based toolkit designed to enhance productivity within AI-assisted development environments, particularly Claude Code, by providing a wide range of modular “skills” for content generation, automation, and data processing. The project organizes its functionality into categories such as content creation, AI generation, and utility tools, enabling users to extend their workflows through reusable components. Each skill is implemented as a structured module with its own configuration, scripts, and execution logic, allowing for flexible customization and extension. The system supports marketplace-style installation, where users can selectively install or update individual skills rather than a monolithic package. It integrates with various external services, including AI APIs and browser automation tools, to expand its capabilities beyond basic text processing. -
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react-widgets
Polished, feature rich, accessible form inputs built with React
react-widgets is a set of customizable and accessible UI components built for React applications, focusing on form inputs and interactive elements. It provides components such as dropdowns, date pickers, comboboxes, and multiselect inputs, designed to handle complex user interactions with ease. The library emphasizes accessibility, ensuring compatibility with keyboard navigation and screen readers. It also supports internationalization, allowing developers to adapt components for different locales and languages. react-widgets is highly customizable, enabling developers to style and configure components according to their application’s design system. It integrates seamlessly into modern React workflows and supports controlled and uncontrolled component patterns. Overall, react-widgets offers a robust toolkit for building user-friendly and accessible form interfaces. -
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libsodium.js
libsodium compiled to Webassembly and pure JavaScript
libsodium.js is a JavaScript and WebAssembly port of the widely used libsodium cryptographic library, providing modern, high-level cryptographic functions for secure application development in web and Node.js environments. It exposes a comprehensive set of APIs for encryption, decryption, hashing, digital signatures, and key exchange, all designed to be safe and easy to use without requiring deep cryptographic expertise. The library leverages WebAssembly for improved performance, enabling near-native execution speeds within browsers and JavaScript runtimes. It is designed to prevent common cryptographic mistakes by offering secure defaults and abstractions that reduce the risk of misuse. libsodium.js is particularly useful for building secure web applications, messaging systems, and privacy-focused tools that require client-side encryption. It also maintains compatibility with the native libsodium library, allowing interoperability across different platforms and languages. -
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OpenAPI-TS
The OpenAPI to TypeScript codegen. Generate clients, SDKs, validators
A TypeScript utility for generating and manipulating OpenAPI definitions, making it easier to work with API schemas in TypeScript projects. -
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lru-cache
A fast cache that automatically deletes the least recently used items
node-lru-cache is a high performance in memory caching library for Node.js that automatically evicts the least recently used items when the cache reaches its size limit. It is designed to provide predictable memory usage while maintaining fast lookup and update operations. The library is widely used in server side JavaScript applications where efficient caching can significantly improve performance. It offers flexible configuration options such as max size limits, time based expiration, and custom disposal logic. Developers can use it to cache expensive computations, API responses, or frequently accessed data. The implementation focuses on correctness, speed, and compatibility with modern Node.js environments. Overall, node-lru-cache provides a reliable building block for performance optimization in JavaScript backends. -
11
Seerr
Open-source media request and discovery manager for Jellyfin
Seerr is a free, open-source web application for managing and fulfilling user requests for media content in your personal media server ecosystem. It integrates seamlessly with popular media servers like Jellyfin, Plex, and Emby, allowing users to browse catalogs and make automated requests for items they want added to the library. Seerr also integrates with backend automation tools such as Sonarr, Radarr, and others to automatically handle content delivery once a request is approved. The project emerged from a merge of similar tools to create a single unified codebase focused on elegant media discovery, streamlined request flows, and a modern UI. It’s designed for both home users and self-hosters who want an easier way to coordinate media requests among family, friends, or community members. Seerr’s architecture supports plugins, themes, and APIs for extensibility, and the community continues to build add-ons and mobile extensions. -
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21st.dev
Largest marketplace of shadcn/ui-based components
21st is an open-source community-driven registry and marketplace for modern React UI components, designed to streamline the discovery, sharing, and installation of reusable interface elements. It functions similarly to a package manager for design engineers, allowing users to browse and install components built with Tailwind CSS and Radix UI directly into their projects. The platform emphasizes minimal, production-ready components that follow modern design and accessibility practices, making it easier to build high-quality interfaces without starting from scratch. Developers can publish their own components to the registry, where they go through a review process before being featured or widely distributed. Each component can include multiple demos, previews, and usage examples, helping users understand how to integrate and customize them. The system also supports TypeScript out of the box, ensuring strong typing and developer experience. -
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OmniTools
Self-hosted collection of powerful web-based tools for everyday tasks
OmniTools is a self-hosted web application that bundles a large collection of everyday utilities into a single clean interface you can run on your own infrastructure. It’s designed to replace the random assortment of “free online tools” people use for quick tasks, while avoiding ads, tracking, and the need to upload sensitive files to unknown servers. A key design choice is that file processing happens entirely on the client side, meaning your data stays in your browser instead of being sent to the backend. The tool catalog spans both technical and non-technical needs, including image, video, audio, PDF, text, date/time, math, and data format utilities like JSON/CSV/XML helpers. It’s also packaged for straightforward self-hosting, with a lightweight Docker image and simple run commands, so it can be deployed quickly on a homelab or internal network. -
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Floral Notepaper
Lightweight, elegant and modern local sticky note tool
Floral Notepaper is a lightweight local note-taking and sticky-note application built with Tauri 2, React, and Rust. It is designed for users who want a modern, elegant, and fast note tool without the heaviness of a full knowledge-management system. The app supports Markdown editing and preview, making it useful for quick notes, snippets, checklists, and temporary writing. It can be summoned through the system tray or a global shortcut, which helps users capture thoughts without interrupting their current workflow. It also includes a tile mode that keeps notes pinned on the desktop for quick reference. Floral Notepaper is best suited for users who want a clean local writing utility that stays lightweight and easy to access. -
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Node-Casbin
An authorization library that supports access control models
Node-Casbin is a powerful and efficient open-source access control library for Node.js projects, supporting various access control models like ACL, RBAC, and ABAC. -
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pi-subagents
Pi extension for async subagent delegation with truncation
pi-subagents is an extension for the Pi coding agent that lets a parent session delegate focused work to independent child agents. Built-in specialists handle tasks such as codebase scouting, external research, planning, implementation, review, context gathering, and second-opinion analysis. Child sessions can run in the foreground with streamed results or continue asynchronously as background jobs. Agents can be composed into sequential chains, parallel groups, reusable workflows, and more durable missions. Custom agent definitions control prompts, models, tools, skills, context inheritance, permissions, timeouts, and output behavior through Markdown frontmatter. The extension also provides observability, fleet management, session sharing, cost inspection, schedules, worktree isolation, and optional runtime permission controls. -
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roadmap.sh
Interactive roadmaps, guides and other educational content
roadmap.sh is the content repository behind roadmap.sh, a community-driven platform for structured technology and career learning paths. It contains interactive roadmaps covering roles, programming languages, frameworks, infrastructure, databases, AI, security, and engineering practices. Each roadmap is divided into topics that link to concise explanations and selected learning resources. The repository also includes best-practice guides and question sets for testing knowledge in areas such as frontend, backend, React, and Node.js. Topic content is stored as Markdown and synchronized with the roadmap.sh website through project tooling and GitHub Actions. Contributors can improve existing paths, add content, suggest changes, or help develop new roadmaps. The project is designed to help learners understand what to study, in what order, and where to continue learning. -
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Better Auth
The most comprehensive authentication library for TypeScript
Better Auth is framework-agnostic authentication (and authorization) library for TypeScript. It provides a comprehensive set of features out of the box and includes a plugin ecosystem that simplifies adding advanced functionalities with minimal code in a short amount of time. Whether you need 2FA, multi-tenant support, or other complex features. It lets you focus on building your actual application instead of reinventing the wheel. -
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Ionicons
Hand-crafted icons built by Ionic for web apps
Premium designed icons for use in web, iOS, Android, and desktop apps. Support for SVG and web font. Completely open source, MIT licensed and built by Ionic. Ionicons is a completely open-source icon set with 1,300 icons crafted for web, iOS, Android, and desktop apps. Ionicons was made for Ionic Framework, a cross-platform hybrid and Progressive Web App framework. The Ionicons Web Component is an easy and performant way to use Ionicons in your app. The component will dynamically load an SVG for each icon, so your app is only requesting the icons that you need. Also note that only visible icons are loaded, and icons which are "below the fold" and hidden from the user's view do not make fetch requests for the svg resource. If you're using Ionic Framework, Ionicons is packaged by default, so no installation is necessary. -
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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. -
21
ReUI
Design-forward shadcn kit for interfaces that stand out
ReUI is a design-forward component library built for the shadcn/ui ecosystem, offering a large-scale collection of production-ready UI components and layouts intended to accelerate modern React and Next.js development. Unlike traditional UI libraries that focus on isolated components, ReUI emphasizes real-world usage by presenting components within complete dashboard layouts and application flows, making it easier for developers to understand how pieces fit together in practical scenarios. The project includes over 1,000 reusable components organized across dozens of categories, along with custom in-house primitives such as data grids, kanban boards, and advanced filtering systems that are not part of the base shadcn/ui toolkit. Its copy-and-own philosophy eliminates dependency lock-in by allowing developers to directly copy component code into their own repositories, ensuring full control and customization. -
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Signature Pad
HTML5 canvas based smooth signature drawing
Signature Pad is a JavaScript library for drawing smooth signatures. It's HTML5 canvas based and uses variable width Bézier curve interpolation based on Smoother Signatures post by Square. It works in all modern desktop and mobile browsers and doesn't depend on any external libraries. Demo works in desktop and mobile browsers. You can check out its source code for some tips on how to handle window resize and high DPI screens. You can also find more about the latter in HTML5 Rocks tutorial. This library is provided as UMD (Universal Module Definition) and ES6 module. When you modify width or height of a canvas, it will be automatically cleared by the browser. SignaturePad doesn't know about it by itself, so you can call signaturePad.clear() to make sure that signaturePad.isEmpty() returns correct value in this case. -
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xstream
Extremely intuitive, small, and functional reactive stream library
xstream is an open-source JavaScript library for functional reactive programming using lightweight event streams. It provides a small API for creating, transforming, and combining asynchronous sequences of values. Unlike traditional Observables, its streams are multicast by default, allowing multiple listeners to share the same execution. Developers can create streams from arrays, promises, periodic timers, and custom event producers. Built-in operators support mapping, filtering, folding, combining, and flattening event sequences. MemoryStreams retain their latest values for subsequent listeners. The library also provides subscription management, debugging utilities, and error handling. Its TypeScript-compatible design is particularly suited to Cycle.js applications and reactive user interfaces. -
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ChordSheetJS
A JavaScript library for parsing and formatting chords and chord sheet
ChordSheetJS is a JavaScript library for parsing, formatting, and transposing chord sheets. It supports various chord sheet formats and provides tools for rendering and manipulating chord and lyric data. -
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HLS.js
HLS.js is a JavaScript library that plays HLS in browsers
HLS.js is a JavaScript library that implements an HTTP Live Streaming client. It relies on HTML5 video and MediaSource Extensions for playback. It works by transmuxing MPEG-2 Transport Stream and AAC/MP3 streams into ISO BMFF (MP4) fragments. Transmuxing is performed asynchronously using a Web Worker when available in the browser. HLS.js also supports HLS + fmp4, as announced during WWDC2016. HLS.js works directly on top of a standard HTML<video> element. HLS.js is written in ECMAScript6 (*.js) and TypeScript (*.ts) (strongly typed superset of ES6), and transpiled in ECMAScript5 using Babel and the TypeScript compiler. Webpack is used to build the distro bundle and serve the local development environment.
