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bundle an RTOS kernel, embedded networking libraries, and hardware demos for microcontroller firmware

About these scores

OSS scale score is an unbounded metric that log-compresses and weights Stars, Watchers, Forks, and Contributors. Discovery score is the current OSS scale score minus the score at discovery. Update pace is commits in the last 30 days, growth momentum is the OSS scale score difference within the recent observation window, and OSS health is a 0–100 rating based on available recency, Community Health, and release data.

Stars
7,855
Primary language
C
License
MIT
Repository last updated
Aug 26, 2026
On this page

Overview

FreeRTOS/FreeRTOS is the classic distribution that combines the FreeRTOS Kernel with supplementary libraries and demos. Release 202411.00 updates the kernel, FreeRTOS+TCP, coreMQTT, coreHTTP, corePKCS11, and other components while shipping target-specific examples.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Key features

Get the FreeRTOS Kernel together with target-specific demos

FreeRTOS/Source contains the kernel and FreeRTOS/Demo contains preconfigured example projects for different hardware and compiler combinations.

Sources: [1]

Combine TCP, MQTT, HTTP, JSON, PKCS11, OTA, and related libraries

The 202411.00 release updates FreeRTOS+TCP, coreMQTT, coreHTTP, coreJSON, corePKCS11, OTA, Device Shadow, Jobs, and several other components to the 202406-LTS generation.

Sources: [1][3]

Pin component versions through Git submodules

The kernel, FreeRTOS+TCP, coreMQTT, coreHTTP, Mbed TLS, and many other components are referenced as submodules so the distribution fixes a tested combination.

Sources: [2]

Best fit

Fits MCU firmware that combines task scheduling with networking libraries

It is useful when embedded teams want the RTOS kernel plus networking, security, protocol libraries, and board/compiler demos in one source distribution.

Sources: [1]

Before adoption

The normal GitHub ZIP does not contain submodule contents

The README explicitly warns that the GitHub UI ZIP omits submodule contents. Clone with --recurse-submodules when evaluating the complete distribution.

Sources: [1]

Build workflows depend on the selected device, compiler, and demo

FreeRTOS/Demo contains preconfigured projects for specific hardware and compilers, so there is no single generic build command for every target. Windows users also need to account for symbolic-link handling.

Sources: [1]

Official sources

  1. [1]FreeRTOS 202411.00 README(2026-10-04)
  2. [2]FreeRTOS 202411.00 submodule map(2026-10-04)
  3. [3]FreeRTOS 202411.00 release(2026-10-04)
  4. [4]FreeRTOS MIT license(2026-10-04)
Supplemental curator note

This repository is the classic distribution rather than only the kernel. Use a recursive clone because normal GitHub ZIPs omit submodules, and validate builds against the actual MCU, compiler, port, and demo.

Try it in 3 steps

  1. 1

    Clone release 202411.00 with submodules

    Use a recursive clone because the normal GitHub ZIP does not include submodule contents.

    git clone --depth 1 --branch 202411.00 --recurse-submodules https://github.com/FreeRTOS/FreeRTOS.git freertos-202411
  2. 2

    Inspect the pinned component submodules

    Confirm that the kernel, FreeRTOS+TCP, coreMQTT, coreHTTP, and other components resolve to the distribution's pinned commits.

    git -C freertos-202411 submodule status --recursive | head -n 20
  3. 3

    Verify the kernel source and target-specific demo tree

    Avoid a generic build and inspect the kernel header plus available demos. Select the port/demo that matches the actual MCU and compiler for a real build.

    test -f freertos-202411/FreeRTOS/Source/include/FreeRTOS.h && test -d freertos-202411/FreeRTOS/Demo && find freertos-202411/FreeRTOS/Demo -maxdepth 1 -mindepth 1 -type d | head -n 10
Check the official README

Growth

Growth trends · Last 30 days

7,855 Stars

Trend data is still being collected.

Development activity

Last 90 days · weekly

Commits (last 30 days)
0
Open PRs
25

Development activity is still being collected.

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GitHub data

GitHub dataView detailed GitHub data
Stars
7,855
Forks
2,100
Watchers
150
Open issues
11
Contributors
124
Owner type
Organization
Primary language
C
License
MIT
Repository last updated
Aug 26, 2026
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