Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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Zod
TypeScript-first schema validation with static type inference and zero dependencies.
FastAPI
A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.
undici
A fast, spec-compliant HTTP/1.1 client for Node.js, built from scratch with zero runtime dependencies
Ajv
The fastest JSON Schema validator for Node.js and the browser, compiling schemas straight into executable validation code.
urllib3
A powerful, user-friendly HTTP client for Python with thread-safe connection pooling, TLS verification, and retry handling.
proxy-agent
Maps HTTP, HTTPS, SOCKS, and PAC proxy protocols to the correct Node.js http.Agent implementation automatically.
rich
A Python library for rendering rich text, tables, progress bars, and syntax-highlighted code in the terminal.
Ruff
An extremely fast Python linter and code formatter, written in Rust, built as a drop-in replacement for Flake8, Black, isort, and dozens of plugins.
Prisma Client
Auto-generated, type-safe database client for Node.js and TypeScript.
typing_extensions
Backported and experimental type-hint features for Python, usable on older interpreters and ahead of the stdlib.
@clickhouse/client
The official TypeScript client for connecting Node.js applications to ClickHouse over HTTP.
zod-to-json-schema
Converts Zod validation schemas into standard JSON Schema, ready for OpenAPI, OpenAI, and JSON Schema draft 7 consumers.
websockets
Build correct, fast WebSocket servers and clients in Python with asyncio, threading, or Sans-I/O APIs.
Typer
Typer is a Python library for building CLI applications, using type hints to generate arguments, options, validation, help text, and shell completion automatically.
jsonschema
The reference implementation of JSON Schema validation for Python, supporting every draft from 3 to 2020-12.
Fastify
A fast and low-overhead web framework for Node.js, built around schema-based validation and a plugin architecture
http-proxy-middleware
The one-liner Node.js proxy middleware for connect, express, next.js, hono, and more.
Effect
A TypeScript library and ecosystem for building robust, type-safe, concurrent applications with a full functional effect system
forge
A native, pure-JavaScript implementation of TLS and PKI cryptography for building crypto-based Node.js and browser apps.
Celery
Distributed task queue for running asynchronous jobs, scheduled work, and complex workflows across Python applications at scale.
Protobuf-ES
A conformance-tested, ESM-first Protocol Buffers runtime and code generator for modern JavaScript and TypeScript.
Mongoose
Schema-based MongoDB object modeling for Node.js, with built-in validation, middleware hooks, and typed models.
got
Human-friendly and powerful HTTP request library for Node.js, with retries, streams, pagination, and RFC 7234 caching built in.
Valibot
Modular, type-safe schema validation library with bundle sizes starting under 1KB
