- Arduino_CRC32: Arduino library providing a simple interface to perform checksum calculations utilizing the CRC-32 algorithm.
- Arduino_KNN: [BETA] Arduino library for the K-Nearest Neighbors algorithm.
- Arduino_TensorFlowLite: Allows you to run machine learning models locally on your device.
- Madgwick: Helpers for MadgwickAHRS algorithm
- USBBlaster: USB Blaster emulation for Arduino boards
- VidorGraphics: Provides graphical functionalities on MKR Vidor 4000
- VidorPeripherals: Provides extended IO functionalities and interfaces

- AceCRC: Cyclic Redundancy Check (CRC) algorithms (crc8, crc16ccitt, crc32) programmatically converted from C99 code generated by pycrc (https://pycrc.org) to Arduino C++ using namespaces and PROGMEM flash memory.
- AceSorting: Various sorting algorithms for Arduino, including Bubble Sort, Insertion Sort, Selection Sort, Shell Sort (3 versions), Comb Sort (4 versions), Quick Sort (3 versions).
- Adafruit MP3: mp3 decoder
- Adafruit nRFCrypto: Arduino Cryptography library using hardware-accelerated ARM CryptoCell CC310 on nRF52-based Adafruit Bluefruit LE modules
- Adafruit TensorFlow Lite: This is a library to abstract away TensorFlow Lite for Adafruit/Arcada boards
- Adafruit WavePlayer Library: Helper library for wrangling Wave files
- ADCDRP: Arduino library for ADC data analysis.
- AESLib: ESP8266 wrapper for AES library with 128-bit CBC encryption
- AIfES for Arduino: The stand alone TinyML solution for self learning smart sensors, systems and almost any Arduino board.
- Angle: Library to convert between floating point angle to minutes hours representation.
- ardubson: Arduino Library for BSON (Binary JSON)
- Arduino POST HTTP Parser: A library that allows for easy parsing of POST packages.
- arduinoFFT: A library for implementing floating point Fast Fourier Transform calculations on Arduino.
- ArduinoJson: A simple and efficient JSON library for embedded C++.
- ArduinoQueue: Queue Library
- ArrbotMonitor: Plotter-friendly display macros.
- ArxStringUtils: Arduino String utilities
- atlas OEM module: Basic function to accessing atlas OEM module.
- AverageAngle: Library to average angles correctly around 0.
- AverageValue: Calculates the average value of some values.
- Base64: A Base64 library for Arduino
- BitArray: Arduino library for compact array of objects with a size expressed in bits.
- BitBool: The ultimate bit manipulation tool.
- BitPack: Library for packing bit flags into byte array
- Boodskap Message library: Arduino library for sending sensor messages to Boodskap IoT Platform
- BoolArray: Arduino library for compact array of booleans of max size 2000 (UNO).
- BufferUtils: An Arduino library for working with Buffers.
- CalibratedSpeed: Arduino Library for calibrating DC motors
- Cardinal: An Arduino library that takes input in degrees and output a string or integer for the 4, 8, 16, or 32 compass headings (like North, South, East, and West).
- Clap: Library for clap recognition and counting
- CmdParser: A simple and most powerfull cmd parser with small memory footprint
- Cojson: Zero-effort JSON reading and writing on Arduino platforms,
- Complex: Arduino library for Complex math.
- Coordinates: Allow easy and reliable conversion between cartesian and polar coordinate system.
- Correlation: Arduino Library to determine correlation between X and Y dataset
- CountDown: Arduino library to implement a CountDown clock in SW.
- CppPotpourri: An architecture-agnostic package of discrete solutions to common problems in C++.
- CRC: Library for CRC for Arduino
- CRC32: An Arduino library for calculating a CRC32 checksum.
- CRCx: CRC calculation for Arduino and other C++ programs
- CRT: Bunch of CRT functions for LEDs
- CSV Parser: CSV Parser for Arduino.
- currency: Arduino library to help formatting integers as currency e.g. $ 1.000.000,00.
- CurveFitting: Fits polynomial curves to given datapoints
- CustomJWT: A library to make it easy to encode and decode JWT tokens on an Arduino.
- DataSeriesPod: A simple Arduino data logging library
- deepC: Allows you to run machine learning models locally on arduino boards.
- DEVNULL: Arduino library for a /dev/null stream
- DEVRANDOM: Arduino library to wrap a random generator in a stream
- DistanceTable: Library for a memory efficient DistanceTable for Arduino.
- Easing: Easing function library for Arduino
- Eigen: Eigen (a C++ template library for linear algebra) for Arduino
- Ephemeris: Arduino library for the calculation of ephemeris of the solar system with an Arduino Mega.
- ESP32-targz: A library to unpack/uncompress tar, gz, and tar.gz files on ESP32 and ESP8266
- ESP32httpUpdate: Http Update for ESP32
- esp8266-google-home-notifier: Send notifications to Google Home from esp8266/32.
- esp8266-google-tts: generate the link to speech mp3 on esp8266/32.
- ESP8266IoTHelper: Helper for ESP8266 that orchestrates WiFi connection and OTA updates
- Etherkit JTEncode: Generate JT65, JT9, JT4, FT8, WSPR, and FSQ symbols on your Arduino.
- Etherkit Morse: Generate Morse Code for transmission on an digital I/O pin.
- EWMA: Exponentially Weighted Moving Average filter used for smoothing data series readings.
- ExponentMap: Generates an exponentially growing array based on provided number of steps and maximum value.
- EzDmaHelper: Buffer management helper for use with EasyDMA-enabled hardware. MIT License.
- Fabrik2D: A library for solving inverse kinematics in 2 dimensions using the FABRIK algorithm.
- FastCRC: Fast CRC routines
- FastMap: Library with fast map function for Arduino.
- FastTrig: Arduino library with interpolated lookup for sin() and cos()
- FFT_C: FFT library in C
- Filters: Filter utilities for Arduino
- FIR filter: FIR filter library for the Arduino.
- fix_fft: A library for implementing fixed-point in-place Fast Fourier Transform on Arduino. It sacrifices precision and instead it is way faster than floating-point implementations.
- fixed: Implementation of fixed poind calculations
- FixedPoint_LUT: Use FixedPoint_LUT to replace highly runtime intensive calculation times
- FixedPoints: A template library for defining fixed point types of varying sizes.
- FLE: Arduino library for FLE = FLoat with Error datatype
- Forecaster: Weather forecasting with Zambretti algorithm
- fp64lib: Handcrafted 64-bit floating point routines for AVR/arduino microprocessors.
- Fraction: Arduino library to implement a Fraction datatype
- FunctionGenerator: Arduino library to generate wave forms (nummeric) for a DAC
- Gaussian: Gaussian math, Kalman Filters and Moving Averages made easy
- gmp-ino: GNU Multiple Precision (GMP) Arithmetic Library for Arduino.
- GParser: Fast library for parsing cstring into substrings
- GyverFIFO: Simple ring (circular, FIFO) buffer for Arduino
- GyverFilters: Library with few filters for data processing
- GyverPID: Fast library for PID regulating algorithm
- GyverRelay: Library for relay regulation algorithm
- Hamming: Library for pack and unpack data by Hamming algorithm
- Histogram: Arduino library for creating histograms math.
- IEEE754tools: Fast helper functions for IEEE754 floats.
- INA226: Arduino library for INA226 power sensor
- infiniteAverage: Experimental Arduino Library to calculate a high precision average of many samples
- Interval: Arduino library for Interval datatype
- Iobeam: Client library for using the iobeam cloud.
- JsmnStream: Reformatting of the Serge Zaitsev jsmn library to parse a JSON string one char at a time.
- Json Streaming Parser: A very memory efficient library to parse (large) JSON objects on small devices
- Json Streaming Parser 2: A memory efficient library to parse (large) JSON objects from HTTP or HTTPS streams on embedded devices.
- Kalman: Include Kalman filter to your Arduino projects
- KickFFT: A library for implementing a discrete Fourier transform on an input data array.
- KickFilters: A library for implementing a few basic filters including: high-pass, low-pass, notch, moving average filters, and median filters.
- KickFiltersRT: A library for implementing a few basic real-time filters including: high-pass, low-pass, notch, etc.
- KickMath: A library for performing a few simple mathematical calculations for use with arrays.
- Kinematics: Toolkit for robotic applications that require forward or inverse kinematics.
- Knock Detector: A non-blocking knock detection library to use with piezo elements
- LibYxml: Yoran Heling's yxml library.
- LineFormatter: Wrapper class for Serial to enhance layout of tabular data.
- LinkedList: A fully implemented LinkedList made to work with Arduino projects
- LinkedPointerList: Light-weight implementation of LinkedList library, that is now stripped down to bare minimum, making it appropriate for use in memory-critical environments.
- LiteOSCParser: A lightweight OSC processing library.
- LoRa Serialization: Library for serialization of data on the Arduino side and deserialization in the TTN
- LoRandom: A library using Semtech's sx1276/7/8/9's `RegRssiWideband` register properly to generate random numbers.
- LTC2991: Arduino library for LTC2991
- M62429: Arduino library for M62429 volume control IC
- MacroLogger: Arduino logger with support for preprocessor directives and standard C/C++ string formatting.
- Mahony: Helpers for MahonyAHRS algorithm
- Maidenhead: Library for converting between latitude/longitude and Maidenhead locators.
- MatrixMath: Minimal linear algebra library
- MBEDSpeech: Arduino library for running speech recognition machine learning models
- MD_Menu: Library for displaying and managing menus on displays with with up to 2 lines.
- MD_MIDIFile: Arduino Standard MIDI File (SMF) Player
- MD_TTT: Tic-Tac-Toe game logic library
- MD_YX5300: Library for Serial MP3 Player (Catalex YX5300 module)
- MedianFilterLib2: Median Filter Library 2
- Melody: Melody offers a simple an powerful music text notation called MELO.
- MeteoFunctions: Collection of meteo functions
- Moving Average Library: Moving Average library for Arduino
- movingAvg: A simple Arduino library for calculating moving averages.
- MSMPLOTTER: A library that can plot on Serial Monitor.
- mString: Static lightweight analog of String class
- MultiMap: Library for fast non-linear interpolation by means of two arrays.
- munet: Modules for Wifi connectivity, NTP, OTA, MQTT on ESP32/ESP8266 compatible with muwerk scheduler, serial link for other platforms
- Muwerk scheduler library: cooperative scheduler and mqtt-like communication queues
- Muwerk ustd library: A minimal and highly portable micro-standard-library for arrays, queues and maps
- Neurona: Artificial Neural Network architectures for Arduino
- NibbleArray: Library to implement a compact array of nibbles (4 bit).
- NoveltyDetection: Detects Novelties/Outliers using Support Vector Machine
- OPTIGA Trust M: This library allows you to communicate with Optiga Trust M Security Controller
- OPTIGATrustX: This library allows you to communicate with OPTIGA™ Trust X Products.
- Oversampling: Improving ADC Resolution By Oversampling Averaging.
- Picovoice_EN: Picovoice is an end-to-end platform for building voice products on your terms.
- PID_RT: Arduino PID library
- Plotter: An Arduino library for easy plotting on host computer via serial communication.
- plotutils: 2-D vector graphics composition library
- Polyline: Encode latitude/longitude coordinates to a Polyline string.
- Prandom: Arduino library for random number generation with Python random interface.
- PrintCharArray: Library to capture prints into a char array.
- PrintSize: Library to determine size of a printed variable.
- PrintString: Library to capture prints into a String.
- pRNG: Pseudo-random number generator
- Psychrometer: Library for psychrometer - read humidity from two thermometers
- QList: Library implements linked lists
- QubitroMqttClient: (BETA) Easily connect to Qubitro IoT Platform with customized MQTT methods.
- Queuetue Digital Balance Library: A library of functions to build a digital balance
- Ramp: A library that manage interpolation beetween values.
- Random16: Fast 16 bit random number generator
- randomHelpers: Arduino library with helper function for faster random bits
- RBD_Threshold: Set and check numeric quantile scales.
- RGBProgress: Calculate an RGB color according to a progression.
- rotaryDecoder: Arduino library to rotary decoder with a PCF8574
- rotaryDecoderSwitch: Arduino library to rotary decoder with a PCF8574
- RTT QRCode: RT-Thread QR Code App
- runningAngle: Library to average angles by means of low pass filtering with wrapping.
- RunningAverage: The library stores the last N individual values in a circular buffer to calculate the running average.
- RunningMedian: The library stores the last N individual values in a buffer to select the median.
- SafeString: A Safe, Static String library to replace Arduino String, plus non-blocking Serial I/O, I/O buffering, loopTimer and millisDelay
- SavLayFilter: Savitzky-Golay Filtering Algorithm
- SerialCommands: An Arduino library to tokenize and parse commands received over a serial port.
- Serie: A library for mesures that makes easy to use time series
- SET: Arduino library to implement simple SET datastructure.
- SHEX: Arduino library to generate hex dump over Serial
- SimpleCLI: A Command Line Interface Library for Arduino
- SimpleFusion: Simple IMU fusion with a complementary filter.
- SimpleHOTP: A lightweight HOTP (HMAC - Based one Time Password) Generator for Arduino.
- SimpleKalmanFilter: A simple implementation of Kalman Filter.
- SkyMap: Tool that let you calculate star azymuth altitude, in any given time and any given position you can calculate j2000,hour_angle,etc.
- smart-input-filter: A stable, unit-tested filter library
- Smoothed: A simple library to store and calculate smoothed values from sensors.
- SoftFilters: Arduino framework and library of software data filters.
- SPC: A library for easy processing of Analog Signals
- SpritzCipher: Spritz library for Arduino, CSPRNG, cryptographic hash and MAC functions, symmetric-key data encryption, and some general-purpose functions.
- SRF05: Arduino library for SRF05 distance sensor
- SSVWaitForStringInStream: Simple class to compare coming characters one by one, on the fly, from any stream, and compare it with predefined string constants.
- StackString: This library was written to accommodate a need for a string class but without the (memory) disadvantages that regular std::string brings.
- statHelpers: Arduino library with a number of statistic helper functions.
- Statistic: Library with basic statistical functions for Arduino.
- StringAction: Introduces string operations and Serial reading
- StringSplitter: Arduino String Splitter Library
- Tachometer: Library for frequency and period measurement
- Temperature: Library with weather related functions.
- TensorFlowLite_ESP32: Allows you to run machine learning models locally on your ESP32 device.
- TGP Decodeur: Permet de décoder les messages selon un format standard.
- TimedPID: PID controller
- TimeRandom: Library for generating random numbers with time syncronization
- timestamp32bits: A library for calculating UNIX-like timestamps for dates AFTER January 1, 1970 or January 1 of whichever year is selected as EPOCH.
- timing: Arduino library with wrapper classes for seconds millis micros.
- TinyXML: Fork of Adam Rudd's (adamvr) TinyXML library.
- TR-064 SOAP Library: Arduino/ESP library for the TR-064 protocol
- TrigDef: A look-up table for trig functions.
- TrivialKalmanFilter: Trivial Kalman Filter.
- Troolean: Arduino Library for a three state logic datatype
- ttestTable: Definition file for t-Tesst alpha level look-up tables for different degrees of freedom.
- Tween: Tween library for Arduino with Robert Penners easing functions
- uBitcoin: Brings Bitcoin to embedded devices
- uCRC16BPBLib: Tiny and cross-device compatible CCITT CRC16 Bit Per Bit or Byte Per Byte calculator library - uCRC16BPBLib
- uCRC16Lib: Tiny and cross-device compatible CCITT CRC16 calculator library - uCRC16Lib
- uCRC16XModemLib: Tiny and cross-device compatible CRC16 XModem calculator library UKHAS.org.uk compatible - uCRC16XModemLib
- uMFMLib: Tiny lib to enode and decode FM and MFM data streams
- unzipLIB: A library to extract files from ZIP archives
- VectorXf: Vector class 2f, 3f, 4f (port of ofVecXf (openFrameworks))
- VolAnalyzer: Library for sound amplitude analysis
- wolfssl: wolfSSL Embedded SSL/TLS Library for Arduino
- XLR8DigitalIO: Arduino library for access to the extra pins available on an XLR8 Snō.
- XLR8Float: Arduino library for hardware accelerated floating point math.
- XLR8PID: Arduino library for hardware accelerated PID control.
- XLR8Quadrature: Arduino library for hardware accelerated quadrature encoder control.
- XMLWriter: Arduino library for creating XML
- XTEA-Cipher: XTEA-Cipher library for Arduino. cryptographic MAC function, symmetric-key data encryption/decryption