| GHIElectronics.TinyCLR.Collections | HashSet and ISet generic collection types |
| GHIElectronics.TinyCLR.Cryptography | Hashing and encryption primitives |
| GHIElectronics.TinyCLR.Data.Json | JSON parsing and serialization |
| GHIElectronics.TinyCLR.Data.SQLite | SQLite embedded SQL database |
| GHIElectronics.TinyCLR.Devices.Adc | Analog-to-digital converter (ADC) input |
| GHIElectronics.TinyCLR.Devices.Camera | Camera image capture |
| GHIElectronics.TinyCLR.Devices.Can | CAN bus communication |
| GHIElectronics.TinyCLR.Devices.Dac | Digital-to-analog converter (DAC) output |
| GHIElectronics.TinyCLR.Devices.Display | Display / LCD controller output |
| GHIElectronics.TinyCLR.Devices.Gpio | Digital I/O pin (GPIO) control |
| GHIElectronics.TinyCLR.Devices.Gpio.LowLevel | Low-level register-based GPIO access |
| GHIElectronics.TinyCLR.Devices.I2c | I²C bus communication |
| GHIElectronics.TinyCLR.Devices.Modbus | Modbus RTU/TCP communication |
| GHIElectronics.TinyCLR.Devices.Network | Network interface controllers (Ethernet, Wi-Fi, cellular) |
| GHIElectronics.TinyCLR.Devices.Onewire | 1-Wire bus communication |
| GHIElectronics.TinyCLR.Devices.Pwm | Pulse-width modulation (PWM) output |
| GHIElectronics.TinyCLR.Devices.Rtc | Real-time clock (RTC) |
| GHIElectronics.TinyCLR.Devices.SecureStorage | Tamper-resistant secure key/data storage |
| GHIElectronics.TinyCLR.Devices.Signals | Digital signal generation and pulse capture |
| GHIElectronics.TinyCLR.Devices.Spi | SPI bus communication |
| GHIElectronics.TinyCLR.Devices.Storage | Removable mass storage (SD card, USB) access |
| GHIElectronics.TinyCLR.Devices.Uart | UART serial-port communication |
| GHIElectronics.TinyCLR.Devices.Usb | USB support |
| GHIElectronics.TinyCLR.Devices.UsbClient | USB client (act as a USB device) |
| GHIElectronics.TinyCLR.Devices.UsbHost | USB host (connect USB peripherals) |
| GHIElectronics.TinyCLR.Devices.Watchdog | Hardware watchdog timer |
| GHIElectronics.TinyCLR.Drawing | 2D graphics and bitmap drawing |
| GHIElectronics.TinyCLR.EthernetIP.Adapter | EtherNet/IP adapter (industrial fieldbus device) |
| GHIElectronics.TinyCLR.EthernetIP.Scanner | EtherNet/IP scanner (industrial fieldbus controller) |
| GHIElectronics.TinyCLR.IO | File and stream I/O |
| GHIElectronics.TinyCLR.IO.TinyFileSystem | Lightweight wear-levelling flash file system |
| GHIElectronics.TinyCLR.Linq | LINQ query operators (System.Linq) |
| GHIElectronics.TinyCLR.Native | Low-level native and system access |
| GHIElectronics.TinyCLR.Networking | TCP/IP sockets and networking |
| GHIElectronics.TinyCLR.Networking.Ftp | FTP client and server |
| GHIElectronics.TinyCLR.Networking.Http | HTTP client and server |
| GHIElectronics.TinyCLR.Networking.Mqtt | MQTT client |
| GHIElectronics.TinyCLR.Pins | Board pin and peripheral ID definitions |
| GHIElectronics.TinyCLR.RegularExpressions | Regular-expression matching |
| GHIElectronics.TinyCLR.RuntimeLoadableProcedures | Load and run native C/C++ procedures (RLP) at runtime |
| GHIElectronics.TinyCLR.System.Xml | System.Xml-compatible XML API |
| GHIElectronics.TinyCLR.UI | Graphical UI toolkit (controls, layout, touch input) |
| GHIElectronics.TinyCLR.Update | In-field firmware and application update (IFU) |
| System.Device.Gpio | System.Device.Gpio compatibility library |
| System.Device.I2c | System.Device.I2c compatibility library |
| System.Device.Pwm | System.Device.Pwm compatibility library |
| System.Device.Spi | System.Device.Spi compatibility library |
| System.IO.Ports | System.IO.Ports (SerialPort) compatibility library |
| System.Security.Cryptography | System.Security.Cryptography compatibility library |