Non-Blocking Reactive Foundation for the JVM
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+131
STARS · LAST 30 DAYS
4
PER DAY
#145
MOST-STARRED Java
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +28 | +131 | +360 |
| Per day | 4 | 4 | 4 |
| Forks gained | +6 | +25 | +63 |
reactor-core gained 131 stars in the last 30 days, about 4 a day, and now has 5.2K. It is about 11 years old and has averaged roughly 477 stars a year. It ranks #145 among Java repositories and #2,104 across all languages on GitHubRepo.
Trending Record
7
DAYS ON TRENDING
#4173
BEST RANK
Oct 9, 2026
FIRST APPEARANCE
Active
STATUS TODAY
reactor-core has maintained a continuous presence across global trending indexes, peaking at #4173. Below is the 30-day activity profile:
💡 Overview
reactor-core is an open-source project written in Java: Non-Blocking Reactive Foundation for the JVM.
Engineered for speed, consistency, and developer ease, it solves common hurdles in asynchronous, flow, flux. 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/reactor/reactor-core.git
cd reactor-core⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
JDK 17 or higher (OpenJDK / GraalVM)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
reactor-core 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
Modern Web Interfaces
Build dynamic, responsive user experiences with component-driven architecture.
Enterprise Design Systems
Standardize design tokens, accessible widgets, and themes across engineering teams.
Interactive Data Dashboards
Render real-time telemetry, user feeds, and analytics with sub-millisecond updates.
Cross-Platform Web Apps
Deploy performant single-page applications optimized for both mobile and desktop browsers.
🚀 Getting Started
Install reactor-core using your package manager: `git clone https://github.com/reactor/reactor-core.git`
Initialize your project workspace or configuration file for reactor-core.
Import reactor-core into your codebase or invoke it directly from your terminal.
Execute your test suite or run `reactor-core --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
reactor/reactor-core is currently ranked #2,104 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #2,099 | sindresorhus/eslint-plugin-unicorn | JavaScript | ★ 5.3K | Compare ↗ |
| #2,100 | zalando/postgres-operator | Go | ★ 5.3K | Compare ↗ |
| #2,101 | grafana/mimir | Go | ★ 5.3K | Compare ↗ |
| #2,102 | bookorbit/bookorbit | TypeScript | ★ 5.3K | Compare ↗ |
| #2,103 | streamyfin/streamyfin | TypeScript | ★ 5.2K | Compare ↗ |
| #2,104 | reactor/reactor-core This Project | Java | ★ 5.2K | |
| #2,105 | laravel/telescope | PHP | ★ 5.2K | Compare ↗ |
| #2,106 | vitali87/code-graph-rag | Python | ★ 5.2K | Compare ↗ |
| #2,107 | dotnet/Silk.NET | C# | ★ 5.2K | Compare ↗ |
| #2,108 | aasm/aasm | Ruby | ★ 5.2K | Compare ↗ |
| #2,108 | RaspAP/raspap-webgui | PHP | ★ 5.2K | Compare ↗ |
Frequently Asked Questions
What does reactor-core do? +
Non-Blocking Reactive Foundation for the JVM
What language is reactor-core written in? +
The primary language is Java. Topics include: asynchronous, flow, flux, jvm, mono.
Is reactor-core actively maintained? +
Yes, the last recorded push was on Oct 8, 2026 with 129 open issues being tracked.
How many stars does reactor-core have? +
reactor-core has 5,242 stars and 1,262 forks on GitHub.
How does reactor-core rank among GitHub repositories? +
With 5,242 stars, reactor/reactor-core is ranked #2,104 globally across all repositories tracked on GitHubRepo and #145 among Java projects.
What license is reactor-core distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
