NeqSim is a library for calculation of fluid behavior, phase equilibrium and process simulation
⚡ Executive Summary & Quick Facts
Authoritative Sourceneqsim is neqsim is an open-source project written in Java: NeqSim is a library for calculation of fluid behavior, phase equilibrium and process simulation..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), equinor/neqsim has accumulated 168 GitHub stars and 78 forks. It is written in Java, licensed under Apache-2.0, and ranks #20,958 globally. It is actively maintained with the latest commit recorded on Nov 10, 2026.”
| Repository | equinor/neqsim ↗ |
|---|---|
| Primary Category | equation of state |
| Language & Stack | Java |
| Software License | Apache-2.0 |
| Community Traction | ★ 168 stars · ⑂ 78 forks · #20,958 globally |
| Maintenance | ● Active (Last commit: Nov 10, 2026) · 163 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: 93/100 · Grade A+Yes, neqsim is actively maintained. Continuous telemetry recorded the last code commit on Nov 10, 2026 (3 days ago). Supported by 168 stars and 78 community forks, this repository holds a calculated health index of 93/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
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+12
STARS · LAST 30 DAYS
1
PER DAY
#1,532
MOST-STARRED Java
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +5 | +12 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +1 | +6 | +10 |
neqsim gained 12 stars in the last 30 days, about 1 a day, and now has 168. It is about 8 years old and has averaged roughly 21 stars a year. It ranks #1,532 among Java repositories and #20,958 across all languages on GitHubRepo.
Trending Record
46
DAYS ON TRENDING
#2173
BEST RANK
Sep 24, 2026
FIRST APPEARANCE
Active
STATUS TODAY
neqsim has maintained a continuous presence across global trending indexes, peaking at #2173. Below is the 30-day activity profile:
💡 Overview
neqsim is an open-source project written in Java: NeqSim is a library for calculation of fluid behavior, phase equilibrium and process simulation.
Engineered for speed, consistency, and developer ease, it solves common hurdles in equation-of-state, fluid-properties, gas-production. 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/equinor/neqsim.git
cd neqsim⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
JDK 17 or higher (OpenJDK / GraalVM)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
neqsim 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 neqsim using your package manager: `git clone https://github.com/equinor/neqsim.git`
Initialize your project workspace or configuration file for neqsim.
Import neqsim into your codebase or invoke it directly from your terminal.
Execute your test suite or run `neqsim --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
equinor/neqsim is currently ranked #20,958 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #20,903 | ycl-2004/Wisp | Swift | ★ 169 | Compare ↗ |
| #20,903 | 2giosangmitom/sqmeow.nvim | Rust | ★ 169 | Compare ↗ |
| #20,903 | socai-io/jev-social | JavaScript | ★ 169 | Compare ↗ |
| #20,903 | lordnordic-debug/StradaOS | Java | ★ 169 | Compare ↗ |
| #20,903 | frostming/dsh-hongguo | JavaScript | ★ 169 | Compare ↗ |
| #20,958 | equinor/neqsim This Project | Java | ★ 168 | |
| #20,958 | defunkt/ambition | Ruby | ★ 168 | Compare ↗ |
| #20,958 | singpolyma/mnemonicode | C | ★ 168 | Compare ↗ |
| #20,958 | clintecker/django-google-analytics | Python | ★ 168 | Compare ↗ |
| #20,958 | mojombo/bertrpc | Ruby | ★ 168 | Compare ↗ |
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Frequently Asked Questions
What does neqsim do? +
NeqSim is a library for calculation of fluid behavior, phase equilibrium and process simulation
Is neqsim actively maintained in 2026? +
Yes, neqsim is actively maintained. The latest code push was recorded on Nov 10, 2026 (3 days ago). It holds a calculated Maintenance Health Score of 93/100 (A+ rating) with 168 stars and 163 open issues.
What language is neqsim written in? +
The primary language is Java. Topics include: equation-of-state, fluid-properties, gas-production, gas-transport, java.
How many stars does neqsim have? +
neqsim has 168 stars and 78 forks on GitHub.
How does neqsim rank among GitHub repositories? +
With 168 stars, equinor/neqsim is ranked #20,958 globally across all repositories tracked on GitHubRepo and #1,532 among Java projects.
What license is neqsim distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
