The easiest way to generate custom Apple Wallet passes in Node.js

Create Apple Wallet Passes in Go

jPasskit is an Java™ implementation of the Apple™ PassKit Web Service.

Golang SDK for Apple Wallet and Google Pay Membership / Loyalty / Event Tickets / Access Cards, Coupons & Flights.

Tool to convert passes for different wallet apps from one format to another

Google Pay API for Passes Client in Go

Samples for the Google Wallet REST APIs

Sample code used for the Google Wallet Web Codelab

Save to Google Pay button - React, Angular, and custom element

Checks the validity of a PKPASS file by checking it's signature and contents match the Apple specification