nexussays 

Cross-platform core library with a logging API and other fundamental types, interfaces, functions, and data structures.

Cross-platform Bluetooth Low Energy (BLE) library for Android, iOS, and UWP. Scan for advertisements and beacons, connect to devices, read/write/notify/indicate, all with a straightforward async API. Reference this nuget from your Shared or PCL or .NetStandard project, and reference the relevant... More information

Android (API 18+) implementation of BLE.net cross-platform Bluetooth Low Energy library. Scan for advertisements and beacons, connect to devices, read/write/notify/indicate, all with a straightforward async API. To get started, add these normal permissions to your app: [assembly: UsesPermission(... More information

iOS (7+) implementation of BLE.net cross-platform Bluetooth Low Energy library. Scan for advertisements and beacons, connect to devices, read/write/notify/indicate, all with a straightforward async API. To get started, obtain the adapter from main or your AppDelegate, and retain this reference for... More information

Windows 10 (1511+) implementation of BLE.net cross-platform Bluetooth Low Energy library. Complete readme & sample application: https://github.com/nexussays/ble.net/blob/master/Readme.md