Packages

Gray-box end-to-end testing framework for React Native apps. Unlike Appium (black-box), Detox instruments the React Native app itself — enabling synchronization with the app's state to eliminate flakiness. Detox waits for the app to be 'idle' before executing test actions, dramatically reducing async timing issues. Written by Wix Engineering. Works with Jest test runner. Supports iOS (Simulator) and Android (Emulator) on CI.

Cross-platform UI framework for Rust inspired by React. Write UI in Rust using JSX-like RSX syntax with React-style hooks and components. Single codebase targets web (WASM), desktop (via WebView or native), mobile (iOS/Android), and TUI. Dioxus 0.5 introduced signals-based reactivity. A leading contender for Rust UI as an alternative to egui's immediate-mode model.

IBM's open-source document conversion library that parses PDF, DOCX, PPTX, and other formats into structured Markdown or JSON with table detection, figure extraction, and layout analysis.

Drizzle ORM is a lightweight, SQL-first TypeScript ORM that provides type-safe query builders mirroring SQL syntax, zero-dependency schema definitions, and a built-in migration toolkit — designed for edge runtimes, serverless, and environments where Prisma's binary query engine is impractical.

FlightAware aviation intelligence REST and streaming API for aviation operators, airlines, airports, and enterprise logistics to access real-time ADS-B flight tracking, predictive gate arrival times, turbulence forecasts, historical flight records, and global aviation data — acquired by Collins Aerospace (Raytheon Technologies) and powering mission-critical aviation operations for airlines, FBOs, and logistics companies. Enables AI agents to manage real-time flight tracking for aviation operations automation, handle ADS-B position data for aircraft monitoring automation, access predictive ETA for gate arrival automation, retrieve turbulence forecast for flight planning automation, manage historical flight for analytics automation, handle airport operations data for FBO management automation, access delay prediction for operations planning automation, retrieve fuel efficiency data for airline cost automation, manage fleet monitoring for corporate aviation automation, and integrate FlightAware with airline ops, ground handler, and corporate flight department platforms for enterprise aviation automation.

Provides REST APIs for geocoding addresses, computing directions and routes, searching places, rendering static map images, and embedding interactive maps in applications.

Provides DiffusionPipeline and modular noise schedulers for running and fine-tuning state-of-the-art diffusion models for image, video, and audio generation.

Kotlin Multiplatform HTTP client built for coroutines. Ktor Client runs on JVM, Android, iOS (Darwin), JS, and WebAssembly — the same client code works across all platforms. Uses a plugin architecture for JSON serialization (kotlinx.serialization), auth, logging, content negotiation, and retry. The standard choice for Kotlin Multiplatform networking, also widely used for Kotlin server-side agent clients.

Lago — open-source, self-hostable usage-based billing and metering platform for SaaS companies, with a REST API for ingesting usage events, managing plans, and generating invoices.

Stateful graph-based framework for building multi-step LLM agent workflows with persistent checkpointing and human-in-the-loop support.

Open-source JavaScript library for rendering interactive vector-tile maps in the browser using WebGL, forked from Mapbox GL JS with no proprietary dependencies.

AI engineering library by Prefect that exposes LLMs as type-safe Python functions using decorators like @marvin.fn, marvin.cast, and @marvin.classifier backed by Pydantic models.

Dutch payment service provider API covering 30+ European and global payment methods (iDEAL, Bancontact, SEPA, credit cards, Klarna, PayPal) with a clean REST API popular in the Netherlands and EU.

Reactive programming library for Java — Quarkus's default reactive framework. Mutiny provides two reactive types: Uni<T> (single async result, like Mono in Project Reactor) and Multi<T> (stream of items, like Flux). Designed for readability over functional programming purity — method names like onItem().transform(), onFailure().retry(), onFailure().recoverWithItem() are readable English vs Reactor's flatMap/concatMap/mergeMap. Integrates with Quarkus reactive extensions (Hibernate Reactive, Reactive PanacheEntity, reactive Kafka client, RESTEasy Reactive).

General-purpose policy engine that decouples policy decisions from application code. OPA evaluates Rego policies against structured JSON input to return policy decisions. Used for Kubernetes admission control, API authorization, data filtering, and compliance checks in agent systems. Policies are version-controlled, testable code separate from application logic.

Modern Python package and dependency manager following PEP 517/518/660 standards. Uses pyproject.toml for all configuration, lockfiles for reproducible environments, and supports PEP 582 (no virtualenv, packages in __pypackages__) as well as traditional venv management. Alternative to Poetry and pip-tools with better PEP compliance and faster resolver. Supports multiple Python version management.

PolyMCP multi-provider MCP client/server enabling AI agents to route tool calls across multiple LLM providers — acting as a bridge that allows agents to use tools from different MCP servers while intelligently routing to the most appropriate backend provider, supporting provider-agnostic agent architectures.

Durable execution platform that makes code run to completion even through failures, restarts, and infrastructure outages. Restate persists the execution state of TypeScript/Java/Go/Python code as it runs — like a workflow engine but for regular code. Agents use Restate to write long-running agentic workflows as regular async functions with automatic durability, retry, and state management.

ShipEngine REST API — multi-carrier shipping label generation, rate comparison, tracking, and address validation across 50+ carriers (UPS, FedEx, USPS, DHL), enabling agents to automate shipping workflows for e-commerce and logistics applications.

Flexible file upload library for Ruby — handles the complete file upload lifecycle with pluggable storage backends (S3, GCS, Azure, local disk, memory). Shrine features: file validation (type, size), metadata extraction (mime type, image dimensions), background processing (ImageMagick, libvips thumbnails), direct uploads (presigned S3 URLs), multiple file versions (thumb, medium, original), resumable uploads via TUS protocol, and ORM integration (ActiveRecord, Sequel, Mongoid). Shrine's plugin architecture allows using only needed features. Replacement for CarrierWave and Paperclip (deprecated). Used for agent application avatars, document uploads, agent knowledge base file ingestion.