Obsqr

The most lightweight QR code readerMIT

QR Scanner (Privacy Friendly)

Scan QR codesGPL-3.0-only

lWS QR

lightweight Web Server QR code generator pluginMIT

WiFiKeyShare

Share Wi-Fi passwords with QR codes and NFC tagsGPL-3.0-or-later

QR & Barcode Scanner

QR and barcode scanner with all the features you need.Unlicense

tagdrop

Decode data URIs in QR codesGPL-3.0-only

QRStream

Transfer files and text via successive QR codesPublicDomain

Share my number via QR code

Share your contact information with easeGPL-3.0-or-later

SecScanQR

The QR code scanner/generator that cares about your privacyGPL-3.0-only

Wifi QR Code Creator

View wifi credentials and share networks as QR codesGPL-3.0-only

QRCode & Barcode scanner

QR Code & Barcode scanner cross-platform applicationMIT

BitShares Wallet

Use Smartcoins like bitBTC, bitUSD & bitEUR in 22 languages w/QR codes & moreGPL-3.0-only

Smartcoins Wallet

Use Smartcoins like bitBTC, bitUSD & bitEUR in 22 languages w/QR codes & moreGPL-3.0-only

andOTP

Time-based One-time Passwords (TOTP) from QR codes for two-factor authenticationMIT

UK COVID-19 Venue Check-in

Third-party app to check in to venues by scanning an NHS Test and Trace QR codeGPL-3.0-or-later

PassAndroid

View Passbook filesGPL-3.0-only

Barcode Scanner

Scan barcodes on products, or barcodes containing URLs, contact info, and so onApache-2.0

Loyalty Card Keychain

Manages barcode-based store/loyalty cards on your phoneGPL-3.0-or-later