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.
React Hook Form
Performant, flexible React forms built on hooks with minimal re-renders and built-in validation.
Pydantic
Data validation and settings management using Python type hints, backed by a Rust core.
@hookform/resolvers
Official React Hook Form adapters that plug 20+ schema-validation libraries — Zod, Yup, Joi, Valibot, ArkType and more — straight into useForm's resolver.
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.
Prisma Client
Auto-generated, type-safe database client for Node.js and TypeScript.
@clickhouse/client
The official TypeScript client for connecting Node.js applications to ClickHouse over HTTP.
validator.js
A dependency-free library of 100+ string validators and sanitizers for Node.js and the browser.
jsonschema
The reference implementation of JSON Schema validation for Python, supporting every draft from 3 to 2020-12.
ajv-formats
ajv-formats: JSON Schema Format Validators for Ajv v8+
class-validator
Decorator-based property validation for TypeScript and JavaScript classes, on both Node.js and the browser.
validator
Go struct and field validation using reflection-based tags, with cross-field, cross-struct, and nested slice/array/map diving support.
Formik
Formik: Build React Forms Without the Tears - Docs & Guide
http-proxy-middleware
The one-liner Node.js proxy middleware for connect, express, next.js, hono, and more.
forge
A native, pure-JavaScript implementation of TLS and PKI cryptography for building crypto-based Node.js and browser apps.
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
joi
The most powerful schema description language and data validator for JavaScript
email-validator
Robust email address syntax and deliverability validation for Python
@apidevtools/swagger-parser
Parses, validates, and dereferences Swagger 2.0 and OpenAPI 3.x specs in Node.js and browsers
zod-validation-error
Turns raw Zod validation issues into clear, human-readable error messages.
