Barby creates barcodes.

Rodauth is Ruby's most advanced authentication framework, designed to work in all rack applications. It's built using Roda and Sequel, but it can be used as middleware in front of web applications that use other web frameworks and database libraries. Rodauth aims to provide strong security for ...

Render QR codes with Rails 3

fir.im command tool, support iOS and Android

Add the ability to use the Google Authenticator with ActiveRecord.

Provides Rails integration for Rodauth authentication framework.

Glues rQRCode together with chunky_png

Prawn/QRCode simplifies the generation and rendering of QRCodes in Prawn PDF documents.

DANFE and DACTE pdf generator for Brazilian invoices and transportation docs.

DANFE pdf generator for Brazilian invoices.

A plugin that lets you document your servers in a datacenter

A library for generating QR Codes for the e-invoice standard by ZATCA in Saudi Arabia.

Health Cards implements SMART Health Cards, a secure and decentralized framework that allows people to prove their vaccination status or medical test results. It is based off of W3C Verifiable Credentials and FHIR R4 health data exchange standards. It allows conversion of clinical data into JW...

https://github.com/0dayinc/pwn/README.md

QR-bills support for swiss payments, for full documentation please refer to github repo: https://github.com/damoiser/qr-bills

Ruby gem for Qrcode generation of Pix (Pagamento Instantâneo Brasileiro - Banco Central do Brasil)

"go/" like private link shortener for internal purpose

Time Based OTP/rfc6238 authentication for Devise

Devise Google Authenticator Extension, for adding Google's OTP to your Rails apps!

EPC QR code for SEPA payments in any format