A cross platform HTML5 QR code reader. See end to end implementation at: https://scanapp.org
Scandit Barcode Scanner SDK for the Web
ZXing for JS's browser layer with decoding implementations for browser.
[deprecated] Lazarsoft's jsqrcode as a node module, object oriented, and with tests
HTML5 QR code scanner using your webcam
This project "cleans" some global variables and hardcoded IDs from the previous projects, also fixing some legacy problems. It is based on Lazar Laszlo's port of ZXing Java library