Alternatives and similar repositories for RIOT

Users that are interested in RIOT are comparing it to the libraries listed below

• zephyrproject-rtos / zephyr
  Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware archite…
  ☆12,301Updated this week
• ARMmbed / mbed-os
  Arm Mbed OS is a platform operating system designed for the internet of things
  ☆4,759Updated 8 months ago
• littlefs-project / littlefs
  A little fail-safe filesystem designed for microcontrollers
  ☆5,919Updated 2 weeks ago
• contiki-ng / contiki-ng
  Contiki-NG: The OS for Next Generation IoT Devices
  ☆1,402Updated 2 weeks ago
• contiki-os / contiki
  The official git repository for Contiki, the open source OS for the Internet of Things
  ☆3,759Updated last year
• hathach / tinyusb
  An open source cross-platform USB stack for embedded system
  ☆5,634Updated last week
• apache / mynewt-core
  An OS to build, deploy and securely manage billions of devices
  ☆866Updated this week
• tock / tock
  A secure embedded operating system for microcontrollers
  ☆5,852Updated this week
• aws / amazon-freertos
  DEPRECATED - See README.md
  ☆2,537Updated 2 years ago
• libopencm3 / libopencm3
  Open source ARM Cortex-M microcontroller library
  ☆3,296Updated 3 months ago
• mcu-tools / mcuboot
  Secure boot for 32-bit Microcontrollers!
  ☆1,542Updated this week
• eclipse-threadx / threadx
  Eclipse ThreadX is an advanced real-time operating system (RTOS) designed specifically for deeply embedded applications.
  ☆3,196Updated last month
• tinyos / tinyos-main
  Main development repository for TinyOS (an OS for embedded, wireless devices).
  ☆1,451Updated last year
• cesanta / mongoose-os
  Mongoose OS - an IoT Firmware Development Framework. Supported microcontrollers: ESP32, ESP8266, CC3220, CC3200, STM32F4, STM32L4, STM32F…
  ☆2,575Updated 2 weeks ago
• FreeRTOS / FreeRTOS-Kernel
  FreeRTOS kernel files only, submoduled into https://github.com/FreeRTOS/FreeRTOS and various other repos.
  ☆3,288Updated this week
• ChibiOS / ChibiOS
  Read only mirror of SVN ChibiOS repository at https://sourceforge.net/projects/chibios/
  ☆774Updated this week
• openthread / openthread
  OpenThread released by Google is an open-source implementation of the Thread networking protocol
  ☆3,673Updated this week
• nanopb / nanopb
  Protocol Buffers with small code size
  ☆4,720Updated this week
• littlekernel / lk
  LK embedded kernel
  ☆3,371Updated last week
• renode / renode
  Renode - Antmicro's open source simulation and virtual development framework for complex embedded systems
  ☆1,893Updated this week
• FreeRTOS / FreeRTOS
  'Classic' FreeRTOS distribution. Started as Git clone of FreeRTOS SourceForge SVN repo. Submodules the kernel.
  ☆6,093Updated last week
• apache / nuttx
  Apache NuttX is a mature, real-time embedded operating system (RTOS)
  ☆3,371Updated this week
• tass-belgium / picotcp
  PicoTCP is a free TCP/IP stack implementation
  ☆1,254Updated last year
• seL4 / seL4
  The seL4 microkernel
  ☆4,982Updated last week
• pellepl / spiffs
  Wear-leveled SPI flash file system for embedded devices
  ☆1,560Updated last year
• bztsrc / raspi3-tutorial
  Bare metal Raspberry Pi 3 tutorials
  ☆2,878Updated last year
• platformio / platformio-core
  Your Gateway to Embedded Software Development Excellence
  ☆8,368Updated last month
• openocd-org / openocd
  Official OpenOCD Read-Only Mirror (no pull requests)
  ☆1,907Updated last week
• Mbed-TLS / mbedtls
  An open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. Relea…
  ☆5,944Updated this week
• stlink-org / stlink
  Open source STM32 MCU programming toolset
  ☆4,713Updated last month