High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.

Open Location Code is a library to generate short codes, called "plus codes", that can be used as digital addresses where street addresses don't exist.

I2P is an anonymizing network, offering a simple layer that identity-sensitive applications can use to securely communicate. All data is wrapped with several layers of encryption, and the network i…

Desktop Bitcoin Wallet focused on security and privacy. Free and open source.

Decentralized P2P exchange platform built on Monero and Tor

An Android library providing APIs to interact with iBeacons

Sample app for the Host-based Card Emulation released in Android 4.4

An Apple's CloudKit library for Android. If you have an iOS App with CloudKit now you can use the contents on Android too.