library
A file tree rendering library
@pierre/trees is an open source file tree rendering library. It's built for performance and flexibility, is super customizable, and comes packed with features.
The library for faithful browser automation. High-fidelity fingerprinting for Bun, engineered for consistency and transparency.
mochi.js is a Bun-native, raw-CDP browser automation framework. Pass a seed and a profile; get a relationally-coherent fingerprint that survives a getParameter(0x9245) probe. JIT-friendly inject payload, Chromium-native fetch (real Chrome JA4 by definition), behavioral synth on top of Bezier+Fitts. Leaves no crumbs.
Paramiko is a pure-Python implementation of the SSHv2 protocol, providing both client and server functionality. It provides the foundation for the high-level SSH library Fabric, which is what we recommend you use for common client use-cases such as running remote shell commands or transferring files.
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libglnx is a utility library for GNOME C projects that provides fd-based filesystem operations as its primary API. Functions like glnx_openat_rdonly, glnx_file_replace_contents_at, and glnx_tmpfile_link_at all take directory fds and operate relative to them. The library is built around the discipline of “always have an fd, never use an absolute path when you can use an fd.
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Gopacket is a clean Go implementation of Impacket, a library intended for working with network protocols.
A complete Go implementation of Impacket - 63 tools and 24 library packages for Windows network protocol interaction, Active Directory enumeration, and attack execution. Built as a native Go framework so you can compile once and run anywhere without Python dependencies.
🪇 Minimal terminal spinners for Rust.
Rattles is a minimal, dependency-free terminal spinner library for Rust. It makes no assumptions about how the output will be used.
Node.js antivirus scanning.
Minimal Node.js wrapper around ClamAV — scan any file and get Clean, Malicious, or ScanError. Handles installation and database updates automatically.
Lightweight fuzzy-search library, with zero dependencies.
Fuse.js is a lightweight, zero-dependency fuzzy-search library written in TypeScript. It works in the browser and on the server, and is designed for searching small-to-medium datasets on the client side where you can't rely on a dedicated search backend.
A fast, async-native Django cache backend for Valkey (and Redis). Opinionated and secure by default.
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Simple Secure Keeper for Secrets.
Keeper is a cryptographic secret store for Go. It encrypts arbitrary byte payloads at rest using Argon2id key derivation and XChaCha20-Poly1305 (default) authenticated encryption, and stores them in an embedded bbolt database.
Components in Markdown.
A fast, streaming-ready markdown parser with component support for Vue, React, Svelte, HTML and ANSI terminal.
Turns any HTML page into clean markdown.
Mozilla Readability algorithm + hickory-to-markdown converter for Babashka.
Turns any HTML page into clean markdown by parsing it with jsoup, scoring content using the Mozilla Readability algorithm, extracting the main article body, and converting the hickory tree to markdown.
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Type-Safe Errors for JS & TypeScript. Encode failure into your program.
This package contains a Result type that represents either success (Ok) or failure (Err).
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An experimental Rust architecture for reactive UI.
Xilem and Masonry provide an experimental high-level architecture for writing GUI apps in Rust.
Masonry is a foundational crate for building natively compiled GUIs in Rust. It provides a retained widget tree and runs event handling and update passes on it.
Xilem a high-level reactive framework inspired by React, SwiftUI and Elm. It lets users create a lightweight view tree, and changes the rendered app based on changes to the tree. It has a web backend and a Masonry backend.
A PHP function to work with private properties and methods.
This package offers an invade function that will allow you to read/write private properties of an object. It will also allow you to call private methods.
Port of the Snowpack Compiler from TypeScript To Golang.
A compiler for the Snowpack IDL (Interface Definition Language) that generates type-safe Go code for RPC services and cryptographic operations. Define your protocols once in .snowp files and get structs, enums, tagged unions, serialization, full client/server RPC stubs, and cryptographic domain separation stubs generated automatically.
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Super lightweight syntax highlighter.
Super lightweight syntax highlighter for JavaScript and JSX—about 1 kB minified and gzipped. Works in the browser or any JS runtime that can set HTML strings.
Data Visualization for React. Streaming-First Visualization for React
Push data at 60fps with decay, pulse, and staleness encoding. Or just pass an array — static data is the simple case. 40+ chart types, network graphs, coordinated dashboards, and AI tooling built in.
Pure-Go implementation of JSONata 2.x for high-throughput streaming evaluation.
JSONata is a lightweight query and transformation language for JSON data — think "jq meets XPath with lambda functions." gnata brings the full JSONata 2.x specification to Go, with a production-grade streaming tier designed for evaluating thousands of expressions against millions of events per day with zero contention.
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noq, a QUIC implementation in Rust.
General purpose implementation of the QUIC transport protocol in pure Rust. Noq is built as an async-friendly API in the noq crate on top of a sans-io protocol library in noq-proto.
Noq started out as a fork of the excellent Quinn project. The main focus of development has been towards adding support for more QUIC (draft) extensions.
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Pts.py is an experimental library for visual thinking.
A vision appears. It twinkles in the vast space of imagination. We squint to connect the dots in a sky full of stars.
Pts.py is an experimental librar for for creative coding, visualization and play. It explores principles of visual composability in code. I started this series of explorations, first with an idea about a simple point (Pt, 2015), then an idea about connecting them, (Pts.js, 2017). Starting anew in Pts.py (2025), this is again both a software library and a speculative playground.
Structure LLM Outputs with Ease. Structured outputs powered by LLMs.
The simplest way to extract structured data from LLMs with type safety and validation.
Get reliable JSON from any LLM. Built on Pydantic for validation, type safety, and IDE support.
A next-generation HTTP client for Python.
HTTPXYZ (pronounced "HTTP-ex-why-zee") is a fully featured HTTP client for Python 3, which provides sync and async APIs, and support for both HTTP/1.1 and HTTP/2.
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Hegel is a universal property-based testing protocol and family of libraries, built on Hypothesis.
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Get the main content of any page as Markdown.
Defuddle extracts the main content from web pages. It cleans up web pages by removing clutter like comments, sidebars, headers, footers, and other non-essential elements, leaving only the primary content.
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RE# - A high-performance, automata based regex engine with first-class support for intersection and complement operations.
RE# compiles patterns into deterministic automata. All matching is non-backtracking with guaranteed linear-time execution. RE# extends System.Text.RegularExpressions syntax with intersection (&), complement (~), and a universal wildcard (_), enabling patterns that are impossible or impractical to express with standard regex.
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Requests is an elegant and simple HTTP library for Python, built for human beings.
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Unofficial Python API and agentic skill for Google NotebookLM. Full programmatic access to NotebookLM's features—including capabilities the web UI doesn't expose—via Python, CLI, and AI agents like Claude Code, Codex, and OpenClaw.
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Open-source payment orchestration for TypeScript. Open-source TypeScript toolkit that unifies multiple payment providers behind a single, extensible API.
PayKit is a payments orchestration framework for TypeScript. It sits between your app and payment providers like Stripe or PayPal, giving you a unified API. Webhooks are verified and normalized automatically. Your database owns the subscriptions, invoices, and usage records — no provider lock-in.
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A unified TypeScript SDK for building chat bots across Slack, Microsoft Teams, Google Chat, Discord, Telegram, GitHub, Linear, and WhatsApp. Write your bot logic once, deploy everywhere.
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Code and preview Word documents in the browser
A browser-based, client-side editor that helps you create .docx files using the JavaScript library Docx.js with live preview.
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The open protocol for machine-to-machine payments. Charge for API requests, tool calls, or content—agents and apps pay per request in the same HTTP call.
Faiss is a library for efficient similarity search and clustering of dense vectors. It contains algorithms that search in sets of vectors of any size, up to ones that possibly do not fit in RAM. It also contains supporting code for evaluation and parameter tuning.
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A Virtual File System for Node.js. Provides an in-memory fs-compatible API with mount points, overlay mode, symlinks, module loading hooks, and custom storage providers.
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Oxyde ORM is a type-safe, Pydantic-centric asynchronous ORM with a high-performance Rust core designed for clarity, speed, and reliability.
Inspired by the elegance of Django’s ORM, Oxyde focuses on explicitness over magic, providing a modern developer-friendly workflow with predictable behavior and strong typing throughout.
Use any icon (100,000+) from Iconify, for TailwindCSS.
LiteRT, successor to TensorFlow Lite. is Google's On-device framework for high-performance ML & GenAI deployment on edge platforms, via efficient conversion, runtime, and optimization
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Haptic feedback for the mobile web. Supports React, Vue, and Svelte.
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A minimal dependency implementation of Apache Parquet.
A parser for the Apache Parquet file format, optimized for minimal dependencies and great performance.
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🌳 Tiny & elegant JavaScript HTTP client based on the Fetch API.
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The AI Operator Living in Your Web Page. JavaScript in-page GUI agent. Control web interfaces with natural language.
🪄One line of code, turns your website into an AI-native app. Users give natural language commands, AI handles the rest.
Touch-to-grab context tool for React Native UI changes.
Bridge the context gap: point at the exact native UI element, capture precise source context, and hand it to your coding agent without guesswork.
The Monster Terminal UI Kernel for Rust.
Minimal, high-performance terminal UI kernel with diff-based rendering, inline mode, and RAII terminal cleanup.
The version control system for AI agents. Embeddable version control system for AI agents.
Lix is a version control system that can be imported as a library. Use it to, for example, enable human-in-the-loop workflows for AI agents like diffs and reviews.
Bringing stdlibs of other programming languages to TypeScript for fun.
Locutus is ~500 TypeScript implementations of standard library functions from PHP, Go, Python, Ruby, C, and more. Each function is individually importable and tree-shakeable.
Most of these started as rainy Sunday afternoon puzzles. Some are genuinely useful. Some are just fun to write. All of them are a way to learn how different languages solve the same problems.
Square’s meticulous HTTP client for the JVM, Android, and GraalVM.
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Full NumPy, in TypeScript/JavaScript (94% coverage).
The most comprehensive NumPy implementation for TypeScript and JavaScript. Write numerical computing code with the same API you already know from Python — fully type-safe, tree-shakeable, and validated against NumPy itself.
Passive API Contract Monitoring for PHP 8.3+. Detects breaking changes, json schema drift, and unexpected structural modifications in third-party REST APIs via probabilistic inference.
Passive API Contract Monitoring for strictly typed PHP 8.3+.
Sentinel silently monitors the JSON payloads returning from the third-party APIs you consume, automatically infers their structural JSON Schema, and detects when they change unexpectedly (drift).
A fast, lightweight, and responsive masonry grid layout library.
Minimal PDF creation library. <400 LOC, zero dependencies, makes real PDFs.
A TypeScript implementation of the age file encryption format, available as an npm package or as a bundled .js file.
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Strongly typed queries for PostgreSQL and TypeScript
pg-typesafe generates TypeScript types for PostgreSQL queries. It does so with no runtime dependencies, and zero additional verbosity.
Live Activities & Widgets in React Voltra lets React Native developers build native Live Activities and widgets on iOS and Android using React components — no Swift or Kotlin required. It supports hot reload, push updates on iOS, and a config plugin that wires everything automatically.
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Access the system clipboard (copy/paste).
Cross-platform. Supports: macOS, Windows, Linux (including Wayland), OpenBSD, FreeBSD, Android with Termux, and modern browsers.
raylib is a simple and easy-to-use library to enjoy videogames programming.
raylib is a simple and easy-to-use library to enjoy videogames programming.
raylib is highly inspired by Borland BGI graphics lib and by XNA framework and it's especially well suited for prototyping, tooling, graphical applications, embedded systems and education.
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The PDF library TypeScript deserves
Parse, modify, sign, and generate PDFs with a modern TypeScript API. The only library with incremental saves that preserve digital signatures.
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pypdf is a free and open source pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. It can also add custom data, viewing options, and passwords to PDF files. pypdf can retrieve text and metadata from PDFs as well.
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La classe Vanilla JS universelle pour Google Maps.
MagixMaps est une bibliothèque JavaScript légère, performante et sans dépendances (Vanilla JS), conçue pour intégrer l'API Google Maps (version 2026) dans tout projet web.