CLI tool to validate USPS addresses
Api wrapper for the USPS Web-Tools
Lightweight mapping of USPS ZIP Codes to their assigned region.
Detect and validate tracking numbers for USPS, UPS, FedEx, and other major couriers.
USPS shared React components library
USPS Abbreviations
USPS API client for tracking packages using OAuth 2.0 authentication
Expands and Abbreviates USPS Street Suffixes
Node.js SDK for USPS Web Tools APIs
APIMatic SDK for USPS API
APIMatic SDK for USPS API
Simple encoder and decoder for the United States Postal Service (USPS) Intelligent Mail Barcode (IMB) service.
US State names and abbreviations / postal codes according to USPS
Unofficial USPS Addresses API client
Library for interfacing with the USPS v3 API.
mappings from USPS code to US state name
Shippo is a shipping API that connects you with [multiple shipping carriers](https://goshippo.com/carriers) (such as USPS, UPS, DHL, Canada Post, Australia Post, and many others) through one interface.
USPS v3 REST API client — OAuth 2.0, address validation, tracking, labels, rates. Drop-in replacement for usps-webtools (retired Jan 2026).
🦞🐚📦 Package tracking plugin for OpenClaw — UPS, FedEx, USPS
Unified shipment tracking data from FedEx, UPS, and USPS APIs.
This is a npm module that provides a React UI component to search for USPS (United States Postal Service) locations. It allows you to retrieve USPS location information based on a full address.
Node.JS library to comply with USPS Publication 28 address guidelines.
A rich library that provides various utility functions to get/check name or USPS code or capital of states or territories and much more
The Pitney Bowes Complete Shipping APIs let you integrate shipping services from multiple carriers, including USPS, into your services and applications.
Implementation of the USPS Postal Address standards
The Rust USP toolkit
A wrapper around the USPS WebTools API
Rhai bindings for the Rust USP toolkit
Universal Session Protocol. PATENT: 11,895,198
The Rust USP toolkit
Track your packages from all over the world. Supports logicsitcs from DHL, UPS, FedEx, USPS, and more.
Pure-Rust port of BWIPP (Barcode Writer in Pure PostScript). Generates barcodes in SVG and PNG.
Universal Bar/QR codes library
Enterprise Logistics MCP Server — shipments, carriers, tracking, route optimization, and warehouse management with ShipEngine, Shippo, Sendy (Africa), and Google Maps
Miyabi Business Agents - 14 specialized agents for business strategy and operations
Chain-agnostic core traits and types for CSV (Client-Side Validation) adapters
USPS Webtools API for Ruby
A flag image (PNG, SVG) generator for United States Power Squadrons.
Ruby class to standardize U.S. postal addresses by referencing the U.S. Postal Service's web site
Makes the USPS API a bit easier to consume on the client-side.
Shared support for USPS Rails applications
An extension to the flag image generator for United States Power Squadrons to generate burgees.
A wrapper for the iMIS API.
An extension to the flag image generator for United States Power Squadrons to generate insignia.
Ruby wrapper for the various USPS APIs
A pure Ruby library to generate a USPS Intelligent Mail barcode. It generates the string of characters to print with one of the USPS Intelligent Mail barcode fonts.
Track USPS shipment.
An automatically generated USPS API Client based on the official USPS User Guides
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