Project Summary
The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight simulator development project.
The goal of the FlightGear project is to create a sophisticated flight simulator framework for use in research or academic environments, for the development and pursuit of other interesting flight simulation ideas, and as an end-user application. We are developing a sophisticated, open simulation framework that can be expanded and improved upon by anyone interested in contributing.
NOTE: this Ohloh page only tracks FlightGear's source repositories (flightgear + simgear). For FlightGear data (aircraft, models, sounds etc.), see https://openhub.net/p/flightgeardata/ and https://openhub.net/p/flightgearaddon/
In a Nutshell, FlightGear Flight Simulator...
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has a well established, mature codebase
maintained by a large development team
with stable Y-O-Y commits -
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took an estimated 274 years of effort (COCOMO model)
starting with its first commit in May, 1997
ending with its most recent commit 9 days ago
Quick Reference
GNU General Public License v2.0 or later
Permitted
Commercial Use
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Distribute
Place Warranty
Forbidden
Sub-License
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Required
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Disclose Source
Include Copyright
State Changes
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Vulnerability Exposure Index
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30 Day SummaryMay 13 2026 — Jun 12 2026
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12 Month SummaryJun 12 2025 — Jun 12 2026
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