Apache NuttX is a mature, real-time embedded operating system (RTOS)
⚡ Executive Summary & Quick Facts
Authoritative Sourcenuttx is nuttx is an open-source project written in C: Apache NuttX is a mature, real-time embedded operating system (RTOS)..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), apache/nuttx has accumulated 4,097 GitHub stars and 1,742 forks. It is written in C, licensed under Apache-2.0, and ranks #3,410 globally. It is actively maintained with the latest commit recorded on Oct 31, 2026.”
| Repository | apache/nuttx ↗ |
|---|---|
| Primary Category | embedded |
| Language & Stack | C |
| Software License | Apache-2.0 |
| Community Traction | ★ 4.1K stars · ⑂ 1.7K forks · #3,410 globally |
| Maintenance | ● Active (Last commit: Oct 31, 2026) · 770 open issues |
| Target Audience | Developers and engineering teams building with C, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 95/100 · Grade A+Yes, nuttx is actively maintained. Continuous telemetry recorded the last code commit on Oct 31, 2026 (13 days ago). Supported by 4,097 stars and 1,742 community forks, this repository holds a calculated health index of 95/100, reflecting very active (commits within last 14 days) and active community feedback (770 open).
Star History
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+102
STARS · LAST 30 DAYS
3
PER DAY
#37
MOST-STARRED C
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +0 | +102 | +270 |
| Per day | 1 | 3 | 3 |
| Forks gained | +0 | +35 | +87 |
nuttx gained 102 stars in the last 30 days, about 3 a day, and now has 4.1K. It is about 7 years old and has averaged roughly 585 stars a year. It ranks #37 among C repositories and #3,410 across all languages on GitHubRepo.
Trending Record
10
DAYS ON TRENDING
#7585
BEST RANK
Oct 31, 2026
FIRST APPEARANCE
Active
STATUS TODAY
nuttx has maintained a continuous presence across global trending indexes, peaking at #7585. Below is the 30-day activity profile:
💡 Overview
nuttx is an open-source project written in C: Apache NuttX is a mature, real-time embedded operating system (RTOS).
Engineered for speed, consistency, and developer ease, it solves common hurdles in embedded, mcu, microcontroller. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in C for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/apache/nuttx.git
cd nuttx⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C99 or C11 compiler with CMake / make
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
nuttx coordinates its core functionality through a modular C pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Production System Integration
Embed nuttx into C backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open Apache-2.0 license.
🚀 Getting Started
Install nuttx using your package manager: `git clone https://github.com/apache/nuttx.git`
Initialize your project workspace or configuration file for nuttx.
Import nuttx into your codebase or invoke it directly from your terminal.
Execute your test suite or run `nuttx --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with C, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
apache/nuttx is currently ranked #3,410 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #3,404 | voormedia/rails-erd | Ruby | ★ 4.1K | Compare ↗ |
| #3,404 | more-itertools/more-itertools | Python | ★ 4.1K | Compare ↗ |
| #3,404 | agent-of-empires/agent-of-empires | Rust | ★ 4.1K | Compare ↗ |
| #3,408 | knowm/XChange | Java | ★ 4.1K | Compare ↗ |
| #3,408 | DTStack/chunjun | Java | ★ 4.1K | Compare ↗ |
| #3,410 | apache/nuttx This Project | C | ★ 4.1K | |
| #3,411 | microsoft/apm | Python | ★ 4.1K | Compare ↗ |
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Frequently Asked Questions
What does nuttx do? +
Apache NuttX is a mature, real-time embedded operating system (RTOS)
Is nuttx actively maintained in 2026? +
Yes, nuttx is actively maintained. The latest code push was recorded on Oct 31, 2026 (13 days ago). It holds a calculated Maintenance Health Score of 95/100 (A+ rating) with 4,097 stars and 770 open issues.
What language is nuttx written in? +
The primary language is C. Topics include: embedded, mcu, microcontroller, nuttx, real-time.
How many stars does nuttx have? +
nuttx has 4,097 stars and 1,742 forks on GitHub.
How does nuttx rank among GitHub repositories? +
With 4,097 stars, apache/nuttx is ranked #3,410 globally across all repositories tracked on GitHubRepo and #37 among C projects.
What license is nuttx distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
