| ▼NTreehopper | Base Treehopper namespace |
| ▼NLibraries | Commonly used external peripherals, sensors, and other devices |
| NArduinoShim | Provide some Arduino functions to make it easier to run Arduino code with Treehopper in C# |
| NDisplays | Individual and array LEDs, plus character and graphic displays |
| NInput | Rotary encoders, buttons, faders, and other physical input devices |
| ▼NIO | Port expanders, shift registers, ADCs, and DACs |
| NAdc | Analog to digital converters (ADCs) |
| NDac | Digital to analog converters (DACs) |
| NDigitalPot | Digital potentiometers |
| NMux | Standard analog multiplexer support for I2c, digital, and analog muxing |
| NPortExpander | GPIO port expanders, shift registers, and PWM expanders |
| NMemory | Discrete flash and RAM memory |
| NMotors | Motors, motor controllers, and H-bridge drivers |
| ▼NSensors | Sensors for measuring physical phenomena |
| NHumidity | Humidity sensors |
| NInertial | Accelerometers, gyroscopes, and magnetometers |
| NMagnetic | Compasses, Hall effect sensors, and 3D magnetic position sensors |
| NOptical | Ambient light, ultraviolet, and infrared sensors and cameras |
| NPressure | Barometric, relative, and absolute pressure sensors |
| NTemperature | Contact and non-contact (IR thermopile) temperature sensors |
| NUtilities | Utility classes used across Treehopper.Libraries |
| NUtilities | Utility classes for working with common data types |