Alternatives and similar repositories for RIOT:

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

• contiki-os / contiki
  The official git repository for Contiki, the open source OS for the Internet of Things
  ☆3,747Updated 11 months ago
• ARMmbed / mbed-os
  Arm Mbed OS is a platform operating system designed for the internet of things
  ☆4,730Updated 5 months ago
• contiki-ng / contiki-ng
  Contiki-NG: The OS for Next Generation IoT Devices
  ☆1,380Updated this week
• littlefs-project / littlefs
  A little fail-safe filesystem designed for microcontrollers
  ☆5,460Updated last week
• aws / amazon-freertos
  DEPRECATED - See README.md
  ☆2,537Updated 2 years ago
• tinyos / tinyos-main
  Main development repository for TinyOS (an OS for embedded, wireless devices).
  ☆1,438Updated last year
• eclipse-threadx / threadx
  Eclipse ThreadX is an advanced real-time operating system (RTOS) designed specifically for deeply embedded applications.
  ☆3,065Updated this week
• apache / mynewt-core
  An OS to build, deploy and securely manage billions of devices
  ☆859Updated last week
• renode / renode
  Renode - Antmicro's open source simulation and virtual development framework for complex embedded systems
  ☆1,792Updated this week
• buildroot / buildroot
  Buildroot, making embedded Linux easy. Note that this is not the official repository, but only a mirror. The official Git repository is a…
  ☆2,919Updated this week
• zephyrproject-rtos / zephyr
  Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware archite…
  ☆11,734Updated this week
• cesanta / mongoose-os
  Mongoose OS - an IoT Firmware Development Framework. Supported microcontrollers: ESP32, ESP8266, CC3220, CC3200, STM32F4, STM32L4, STM32F…
  ☆2,540Updated 3 weeks ago
• FreeRTOS / FreeRTOS-Kernel
  FreeRTOS kernel files only, submoduled into https://github.com/FreeRTOS/FreeRTOS and various other repos.
  ☆3,117Updated last week
• FreeRTOS / FreeRTOS
  'Classic' FreeRTOS distribution. Started as Git clone of FreeRTOS SourceForge SVN repo. Submodules the kernel.
  ☆5,813Updated 2 weeks ago
• whitecatboard / Lua-RTOS-ESP32
  Lua RTOS for ESP32
  ☆1,240Updated 2 years ago
• pellepl / spiffs
  Wear-leveled SPI flash file system for embedded devices
  ☆1,552Updated last year
• mcu-tools / mcuboot
  Secure boot for 32-bit Microcontrollers!
  ☆1,460Updated last week
• sbabic / swupdate
  Software Update for Embedded Systems
  ☆1,513Updated 2 weeks ago
• Mbed-TLS / mbedtls
  An open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. Relea…
  ☆5,763Updated this week
• apache / nuttx
  Apache NuttX is a mature, real-time embedded operating system (RTOS)
  ☆3,161Updated this week
• openthread / openthread
  OpenThread released by Google is an open-source implementation of the Thread networking protocol
  ☆3,601Updated this week
• openocd-org / openocd
  Official OpenOCD Read-Only Mirror (no pull requests)
  ☆1,826Updated last week
• tass-belgium / picotcp
  PicoTCP is a free TCP/IP stack implementation
  ☆1,230Updated last year
• libopencm3 / libopencm3
  Open source ARM Cortex-M microcontroller library
  ☆3,207Updated last month
• adamdunkels / uip
  The historical uIP sources
  ☆923Updated 8 years ago
• picolibc / picolibc
  picolibc - a C library designed for embedded 32- and 64- bit systems.
  ☆1,281Updated this week
• espruino / Espruino
  The Espruino JavaScript interpreter - Official Repo
  ☆2,846Updated this week
• hathach / tinyusb
  An open source cross-platform USB stack for embedded system
  ☆5,413Updated this week
• seL4 / seL4
  The seL4 microkernel
  ☆4,862Updated this week
• embox / embox
  Modular and configurable OS for embedded applications
  ☆1,355Updated this week