CodeIntelligenceTesting/jazzer
Coverage-guided, in-process fuzzing for the JVM
⚡ Executive Summary & Quick Facts
Authoritative Sourcejazzer is jazzer is an open-source project written in Java: Coverage-guided, in-process fuzzing for the JVM..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of October 2026), CodeIntelligenceTesting/jazzer has accumulated 1,262 GitHub stars and 173 forks. It is written in Java, licensed under Apache-2.0, and ranks #6,471 globally. It is actively maintained with the latest commit recorded on Oct 25, 2026.”
| Repository | CodeIntelligenceTesting/jazzer ↗ |
|---|---|
| Primary Category | clojure |
| Language & Stack | Java |
| Software License | Apache-2.0 |
| Community Traction | ★ 1.3K stars · ⑂ 173 forks · #6,471 globally |
| Maintenance | ● Active (Last commit: Oct 25, 2026) · 54 open issues |
| Target Audience | Developers and engineering teams building with Java, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 97/100 · Grade A+Yes, jazzer is actively maintained. Continuous telemetry recorded the last code commit on Oct 25, 2026 (6 days ago). Supported by 1,262 stars and 173 community forks, this repository holds a calculated health index of 97/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
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+32
STARS · LAST 30 DAYS
1
PER DAY
#467
MOST-STARRED Java
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +7 | +32 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +1 | +3 | +10 |
jazzer gained 32 stars in the last 30 days, about 1 a day, and now has 1.3K. It is about 6 years old and has averaged roughly 210 stars a year. It ranks #467 among Java repositories and #6,471 across all languages on GitHubRepo.
Trending Record
5
DAYS ON TRENDING
#8767
BEST RANK
Oct 26, 2026
FIRST APPEARANCE
Active
STATUS TODAY
jazzer has maintained a continuous presence across global trending indexes, peaking at #8767. Below is the 30-day activity profile:
💡 Overview
jazzer is an open-source project written in Java: Coverage-guided, in-process fuzzing for the JVM.
Engineered for speed, consistency, and developer ease, it solves common hurdles in clojure, fuzzer, fuzzing. 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 Java 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/CodeIntelligenceTesting/jazzer.git
cd jazzer⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
JDK 17 or higher (OpenJDK / GraalVM)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
jazzer coordinates its core functionality through a modular Java 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 jazzer into Java 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 jazzer using your package manager: `git clone https://github.com/CodeIntelligenceTesting/jazzer.git`
Initialize your project workspace or configuration file for jazzer.
Import jazzer into your codebase or invoke it directly from your terminal.
Execute your test suite or run `jazzer --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with Java, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
CodeIntelligenceTesting/jazzer is currently ranked #6,471 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #6,465 | yym68686/uni-api | Rust | ★ 1.3K | Compare ↗ |
| #6,465 | LING71671/open-reverselab | Python | ★ 1.3K | Compare ↗ |
| #6,468 | dcramer/django-devserver | Python | ★ 1.3K | Compare ↗ |
| #6,468 | gemrb/gemrb | C++ | ★ 1.3K | Compare ↗ |
| #6,468 | alexandercerutti/passkit-generator | TypeScript | ★ 1.3K | Compare ↗ |
| #6,471 | CodeIntelligenceTesting/jazzer This Project | Java | ★ 1.3K | |
| #6,471 | egbertbouman/youtube-comment-downloader | Python | ★ 1.3K | Compare ↗ |
| #6,471 | nats-io/nats.py | Python | ★ 1.3K | Compare ↗ |
| #6,474 | hub4j/github-api | Java | ★ 1.3K | Compare ↗ |
| #6,474 | facebook/mariana-trench | C++ | ★ 1.3K | Compare ↗ |
| #6,474 | fivetaku/gptaku_plugins | HTML | ★ 1.3K | Compare ↗ |
Frequently Asked Questions
What does jazzer do? +
Coverage-guided, in-process fuzzing for the JVM
Is jazzer actively maintained in 2026? +
Yes, jazzer is actively maintained. The latest code push was recorded on Oct 25, 2026 (6 days ago). It holds a calculated Maintenance Health Score of 97/100 (A+ rating) with 1,262 stars and 54 open issues.
What language is jazzer written in? +
The primary language is Java. Topics include: clojure, fuzzer, fuzzing, java, jni.
How many stars does jazzer have? +
jazzer has 1,262 stars and 173 forks on GitHub.
How does jazzer rank among GitHub repositories? +
With 1,262 stars, CodeIntelligenceTesting/jazzer is ranked #6,471 globally across all repositories tracked on GitHubRepo and #467 among Java projects.
What license is jazzer distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
