Features
Real-time operating system kernel (Mynewt OS)
Bluetooth Low Energy stack (BLE 5) - choose HOST only or CONTROLLER only or FULL stack.
Bluetooth Low Energy Mesh
Command line package management and build system (Newt Tool)
Hardware Abstraction Layer unifying common MCU features, see discussion thread
Board Support Infrastructure
System level logs and statistics
Secure bootloader, signed images and remote firmware upgrade
Flash circular buffers, Newtron Flash File System (nffs), or hook up any other file system
Serial upgrade of bootloader, see discussion thread
WiFi support via socket interface, join discussion here
Basic IP support
For features in each release, see Release Notes