A client library for the Arduino Ethernet Shield that provides support for MQTT.
Star History
Momentum
+100
STARS · LAST 30 DAYS
3
PER DAY
#71
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +21 | +100 | +270 |
| Per day | 3 | 3 | 3 |
| Forks gained | +8 | +30 | +75 |
pubsubclient gained 100 stars in the last 30 days, about 3 a day, and now has 4K. It is about 18 years old and has averaged roughly 223 stars a year. It ranks #71 among C++ repositories and #1,240 across all languages on GitHubRepo.
Trending Record
2
DAYS ON TRENDING
#1633
BEST RANK
Sep 27, 2026
FIRST APPEARANCE
Active
STATUS TODAY
pubsubclient has maintained a continuous presence across global trending indexes, peaking at #1633. Below is the 30-day activity profile:
💡 Overview
pubsubclient is an open-source project written in C++: A client library for the Arduino Ethernet Shield that provides support for MQTT.
Engineered for speed, consistency, and developer ease, it solves common hurdles in C++. 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/knolleary/pubsubclient.git
cd pubsubclient⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C++20 compliant compiler (GCC 11+, Clang 13+, MSVC)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
pubsubclient 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 pubsubclient 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 MIT license.
🚀 Getting Started
Install pubsubclient using your package manager: `git clone https://github.com/knolleary/pubsubclient.git`
Initialize your project workspace or configuration file for pubsubclient.
Import pubsubclient into your codebase or invoke it directly from your terminal.
Execute your test suite or run `pubsubclient --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
knolleary/pubsubclient is currently ranked #1,240 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
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Frequently Asked Questions
What does pubsubclient do? +
A client library for the Arduino Ethernet Shield that provides support for MQTT.
What language is pubsubclient written in? +
The primary language is C++. Topics include: software.
Is pubsubclient actively maintained? +
Yes, the last recorded push was on Jun 10, 2026 with 568 open issues being tracked.
How many stars does pubsubclient have? +
pubsubclient has 4,015 stars and 1,503 forks on GitHub.
How does pubsubclient rank among GitHub repositories? +
With 4,015 stars, knolleary/pubsubclient is ranked #1,240 globally across all repositories tracked on GitHubRepo and #71 among C++ projects.
What license is pubsubclient distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
