zxing - ZXing ("Zebra Crossing") barcode scanning library for Java, Android

•    Java

Parent Maven project for ZXing modules

node-qrcode - qr code generator

•    Javascript

QR code/2d barcode generator. or, install it globally to use qrcode from the command line to save qrcode images or generate ones you can view in your terminal.

escpos-php - PHP receipt printer library for use with ESC/POS-compatible thermal and impact printers

•    PHP

This project implements a subset of Epson's ESC/POS protocol for thermal receipt printers. It allows you to generate and print receipts with basic formatting, cutting, and barcodes on a compatible printer. The library was developed to add drop-in support for receipt printing to any PHP app, including web-based point-of-sale (POS) applications.

quaggaJS - An advanced barcode-scanner written in JavaScript

•    Javascript

QuaggaJS is a barcode-scanner entirely written in JavaScript supporting real- time localization and decoding of various types of barcodes such as EAN, CODE 128, CODE 39, EAN 8, UPC-A, UPC-C, I2of5, 2of5, CODE 93 and CODABAR. The library is also capable of using getUserMedia to get direct access to the user's camera stream. Although the code relies on heavy image-processing even recent smartphones are capable of locating and decoding barcodes in real-time. Try some examples and check out the blog post (How barcode-localization works in QuaggaJS) if you want to dive deeper into this topic.

JsBarcode - Barcode generation library written in JavaScript that works in both the browser and on Node

•    Javascript

JsBarcode is a barcode generator written in JavaScript. It supports multiple barcode formats and works in browsers and with Node.js. It has no dependencies when it is used for the web but works with jQuery if you are into that. Use any jsbarcode-* or data-* as attributes where * is any option.

EFQRCode - A better way to operate quick response code in Swift.

•    Swift

EFQRCode is a lightweight, pure-Swift library for generating pretty QRCode image with input watermark or icon and recognizing QRCode from image, it is based on CoreGraphics, CoreImage and ImageIO. EFQRCode provides you a better way to operate QRCode in your app, it works on iOS, macOS, watchOS and tvOS, and it is available through CocoaPods, Carthage and Swift Package Manager. This project is inspired by qrcode. To run the example project manually, clone the repo, demos are in the 'Examples' folder.

react-native-camera - A Camera component for React Native. Also supports barcode scanning!

•    Java

The comprehensive camera module for React Native. Inside your package.json, use this "react-native-camera": "git+https://git@github.com/react-native-community/react-native-camera" instead of "react-native-camera": "^1.0.0".

RxTool - Android开发人员不得不收集的工具类集合 | 支付宝支付 | 微信支付（统一下单） | 微信分享 | Zip4j压缩（支持分卷压缩与加密） | 一键集成UCrop选择圆形头像 | 一键集成二维码和条形码的扫描与生成 | 常用Dialog | WebView的封装可播放视频 | 仿斗鱼滑动验证码 | Toast封装 | 震动 | GPS | Location定位 | 图片缩放 | Exif 图片添加地理位置信息（经纬度） | 蛛网等级 | 颜色选择器 | ArcGis | VTPK | 编译运行一下说不定会找到惊喜

•    Java

Android开发人员不得不收集的工具类集合 | 支付宝支付 | 微信支付（统一下单） | 微信分享 | Zip4j压缩（支持分卷压缩与加密） | 一键集成UCrop选择圆形头像 | 一键集成二维码和条形码的扫描与生成 | 常用Dialog | WebView的封装可播放视频 | 仿斗鱼滑动验证码 | Toast封装 | 震动 | GPS | Location定位 | 图片缩放 | Exif 图片添加地理位置信息（经纬度） | 蛛网等级 | 颜色选择器 | ArcGis | VTPK | 编译运行一下说不定会找到惊喜

bwip-js - Barcode Writer in Pure JavaScript

•    Javascript

bwip-js is a translation to native JavaScript of the amazing code provided in Barcode Writer in Pure PostScript. The translated code can run on any modern browser or JavaScript-based server framework. The software has encoding modules for over 90 different barcode types and standards. All linear and two-dimensional barcodes in common use (and many uncommon ones) are available. An exhaustive list of supported barcode types can be found at the end of this document.

swiftScan - A barcode and qr code scanner( 二维码 各种码识别，生成，界面效果)

•    Swift

A barcode and qr code scanner( 二维码 各种码识别，生成，界面效果)

QRCoder - A pure C# Open Source QR Code implementation

•    CSharp

QRCoder is a simple library, written in C#.NET, which enables you to create QR codes. It hasn't any dependencies to other libraries and is available as .NET Framework and .NET Core PCL version on NuGet. QRCoder is project by Raffael Herrmann and was first released in 10/2013. It's licensed under the MIT license.

barcode - a barcode creation lib for golang

•    Go

This is a package for GO which can be used to create different types of barcodes. To create a barcode use the Encode function from one of the subpackages.

react-native-barcodescanner - A barcode scanner component for react native - not maintained anymore - use react-native-camera

•    Java

Version 0.4.0 of react-native-camera includes barcode scanning for android as well. I recommend using it for barcode and QR scanning as you can use the same library both for iOS and android and the implementation is more robust than this one. A barcode scanner component for react native android. The library uses https://github.com/zxing/zxing to decode the barcodes.

ZXing.Net

•    DotNet

A library which supports decoding and generating of barcodes (like QR Code, PDF 417, EAN, UPC, Aztec, Data Matrix, Codabar) within images.

PassAndroid - Android App to view passes

•    Kotlin

Displays esPass (*.esPass) and Passbook ( *.pkpass ) files & shows the Barcode ( QR, PDF417, AZTEC, Code 39 and Code 128 format ). It useable offline. When preparing for the Chaos Communication Congress 2012 ( #29c3 ) I stumbled upon a passbook file for the first time. As I really like the idea of paperless tickets as it saves time and trees which both are very valuable to me. The problem was that I found no app with which I could use the downloaded passbook file. THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

ZXingLite - 🔥 ZXing的精简版，优化扫码和生成二维码/条形码功能，让集成更简单。（扫码识别速度快如微信）

•    Java

🔥 ZXing的精简版，优化扫码和生成二维码/条形码功能，让集成更简单。（扫码识别速度快如微信）

Barcode Rendering Framework

The bar-code rendering framework quite simply encapsulates the native rendering of barcode symbologies without requiring third-party fonts. The framework makes it easy to define new symbologies and use the resultant images from web or forms applications in a variety of usage s...

QrCode.Net

The goal of the project is provding an easy to use, fully managed .Net library for handling QR code according to ISO/IEC 18004.

Open-Source .NET WPF Reporting Engine

•    WPF

This project allows you to create reports using WPF (Windows Presentation Foundation). Its supports headers and footers, DataTable binding, barcode generation, XPS creation and more. This is a very early alpha version not intented to be used in production environments.

USPS Intelligent Mail Barcode (OneCode)

•    DotNet

USPS One Code - Intelligent Mail Barcode (4-State Customer Barcode) - encoder implementation with VS 2008. Source code in C# and VB.NET and binaries for .NET (1.1, 2.0 and 3.5), .NET CF (2.0 and 3.5) and Mono (1.* and 2.0).