Reference implementation of the ZIM specification
⚡ Executive Summary & Quick Facts
Authoritative Sourcelibzim is libzim is an open-source project written in C++: Reference implementation of the ZIM specification..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), openzim/libzim has accumulated 258 GitHub stars and 79 forks. It is written in C++, licensed under GPL-2.0, and ranks #17,148 globally. It is actively maintained with the latest commit recorded on Oct 19, 2026.”
| Repository | openzim/libzim ↗ |
|---|---|
| Primary Category | compression |
| Language & Stack | C++ |
| Software License | GPL-2.0 |
| Community Traction | ★ 258 stars · ⑂ 79 forks · #17,148 globally |
| Maintenance | ● Active (Last commit: Oct 19, 2026) · 91 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: 88/100 · Grade AYes, libzim is actively maintained. Continuous telemetry recorded the last code commit on Oct 19, 2026 (24 days ago). Supported by 258 stars and 79 community forks, this repository holds a calculated health index of 88/100, reflecting regular maintenance (24 days ago) and healthy issue cadence.
Star History
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+10
STARS · LAST 30 DAYS
1
PER DAY
#1,369
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +0 | +10 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +0 | +3 | +10 |
libzim gained 10 stars in the last 30 days, about 1 a day, and now has 258. It is about 10 years old and has averaged roughly 26 stars a year. It ranks #1,369 among C++ repositories and #17,148 across all languages on GitHubRepo.
Trending Record
20
DAYS ON TRENDING
#12372
BEST RANK
Oct 19, 2026
FIRST APPEARANCE
Active
STATUS TODAY
libzim has maintained a continuous presence across global trending indexes, peaking at #12372. Below is the 30-day activity profile:
💡 Overview
libzim is an open-source project written in C++: Reference implementation of the ZIM specification.
Engineered for speed, consistency, and developer ease, it solves common hurdles in compression, file-format, kiwix. 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/openzim/libzim.git
cd libzim⚙ 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
libzim 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 libzim 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 GPL-2.0 license.
🚀 Getting Started
Install libzim using your package manager: `git clone https://github.com/openzim/libzim.git`
Initialize your project workspace or configuration file for libzim.
Import libzim into your codebase or invoke it directly from your terminal.
Execute your test suite or run `libzim --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
openzim/libzim is currently ranked #17,148 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #17,113 | litvinovtd/qeli | Rust | ★ 259 | Compare ↗ |
| #17,113 | tangosdev/sm64ds-decomp | C++ | ★ 259 | Compare ↗ |
| #17,113 | Low-Zi-Hong/ESP32s3-LLM-Cluster | C++ | ★ 259 | Compare ↗ |
| #17,113 | rasonyang/ai-native-callcenter | Go | ★ 259 | Compare ↗ |
| #17,113 | MuQY1818/OpenYoink | Swift | ★ 259 | Compare ↗ |
| #17,148 | openzim/libzim This Project | C++ | ★ 258 | |
| #17,148 | defunkt/cache_fu | Ruby | ★ 258 | Compare ↗ |
| #17,148 | gabriel/GHKit | Objective-C | ★ 258 | Compare ↗ |
| #17,148 | clemens/delocalize | Ruby | ★ 258 | Compare ↗ |
| #17,148 | nitlang/nit | C | ★ 258 | Compare ↗ |
| #17,148 | shumkov/rediska | PHP | ★ 258 | Compare ↗ |
Frequently Asked Questions
What does libzim do? +
Reference implementation of the ZIM specification
Is libzim actively maintained in 2026? +
Yes, libzim is actively maintained. The latest code push was recorded on Oct 19, 2026 (24 days ago). It holds a calculated Maintenance Health Score of 88/100 (A rating) with 258 stars and 91 open issues.
What language is libzim written in? +
The primary language is C++. Topics include: compression, file-format, kiwix, offline, openzim.
How many stars does libzim have? +
libzim has 258 stars and 79 forks on GitHub.
How does libzim rank among GitHub repositories? +
With 258 stars, openzim/libzim is ranked #17,148 globally across all repositories tracked on GitHubRepo and #1,369 among C++ projects.
What license is libzim distributed under? +
The repository reports a GPL-2.0 license. Always verify the repository LICENSE file for legal terms.
