The General Mission Analysis Tool (GMAT) is the world's leading enterprise, multi-mission, open source software system for space mission design, optimization, and navigation. The system supports missions in flight regimes ranging from low Earth orbit to lunar, libration point, and deep space missions. NOTE: Non-release tagged commits are AS IS.
Star History
Momentum
+10
STARS · LAST 30 DAYS
1
PER DAY
#456
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +7 | +10 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +1 | +3 | +10 |
GMAT gained 10 stars in the last 30 days, about 1 a day, and now has 112. It is about 1 year old and has averaged roughly 112 stars a year. It ranks #456 among C++ repositories and #6,622 across all languages on GitHubRepo.
Trending Record
3
DAYS ON TRENDING
#4557
BEST RANK
Sep 26, 2026
FIRST APPEARANCE
Active
STATUS TODAY
GMAT has maintained a continuous presence across global trending indexes, peaking at #4557. Below is the 30-day activity profile:
💡 Overview
GMAT is an open-source project written in C++: The General Mission Analysis Tool (GMAT) is the world's leading enterprise, multi-mission, open source software system for space mission design, optimization, and navigation. The system supports missions in flight regimes ranging from low Earth orbit to lunar, libration point, and deep space missions. NOTE: Non-release tagged commits are AS IS.
Engineered for speed, consistency, and developer ease, it solves common hurdles in astrodynamics, data-visualization, flight-dynamics. 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/nasa/GMAT.git
cd GMAT⚙ 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
GMAT 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 GMAT 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 Apache-2.0 license.
🚀 Getting Started
Install GMAT using your package manager: `git clone https://github.com/nasa/GMAT.git`
Initialize your project workspace or configuration file for GMAT.
Import GMAT into your codebase or invoke it directly from your terminal.
Execute your test suite or run `GMAT --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
nasa/GMAT is currently ranked #6,622 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #6,593 | varunaditya-plus/SeerrFin | JavaScript | ★ 113 | Compare ↗ |
| #6,593 | lumiis2/opportunity-tracker | Python | ★ 113 | Compare ↗ |
| #6,593 | eperez28/sonar.cool | Swift | ★ 113 | Compare ↗ |
| #6,593 | liushunqi8-hash/editaplot2026 | Python | ★ 113 | Compare ↗ |
| #6,593 | allebee/jevk5 | Python | ★ 113 | Compare ↗ |
| #6,622 | nasa/GMAT This Project | C++ | ★ 112 | |
| #6,622 | slagyr/limelight | Java | ★ 112 | Compare ↗ |
| #6,622 | lang/unicode_utils | Ruby | ★ 112 | Compare ↗ |
| #6,622 | nothingmuch/git-svn-abandon | Shell | ★ 112 | Compare ↗ |
| #6,622 | openstreetmap/chef | Ruby | ★ 112 | Compare ↗ |
| #6,622 | geopm/geopm | C++ | ★ 112 | Compare ↗ |
Frequently Asked Questions
What does GMAT do? +
The General Mission Analysis Tool (GMAT) is the world's leading enterprise, multi-mission, open source software system for space mission design, optimization, and navigation. The system supports missions in flight regimes ranging from low Earth orbit to lunar, libration point, and deep space missions. NOTE: Non-release tagged commits are AS IS.
What language is GMAT written in? +
The primary language is C++. Topics include: astrodynamics, data-visualization, flight-dynamics, mathematics, navigation.
Is GMAT actively maintained? +
Yes, the last recorded push was on Sep 25, 2026 with 6 open issues being tracked.
How many stars does GMAT have? +
GMAT has 112 stars and 18 forks on GitHub.
How does GMAT rank among GitHub repositories? +
With 112 stars, nasa/GMAT is ranked #6,622 globally across all repositories tracked on GitHubRepo and #456 among C++ projects.
What license is GMAT distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
