Project Summary
NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 32-bit microcontroller environments, the primary governing standards in NuttX are Posix and ANSI standards. Additional standard APIs from Unix and other common RTOS’s (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).
In a Nutshell, Apache NuttX...
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has a well established, mature codebase
maintained by a very large development team
with decreasing Y-O-Y commits -
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took an estimated 1,256 years of effort (COCOMO model)
starting with its first commit in February, 2007
ending with its most recent commit 4 days ago
Apache License 2.0
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Sub-License
Private Use
Use Patent Claims
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
State Changes
Include License
Include Notice
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 )
Project Vulnerability Report
No data available
Did You Know...
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use of OSS increased in 65% of companies in 2016
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data presented on the Open Hub is available through our API
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in 2016, 47% of companies did not have formal process in place to track OS code
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learn about Open Hub updates and features on the Open Hub blog
30 Day SummaryDec 25 2025 — Jan 24 2026
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12 Month SummaryJan 24 2025 — Jan 24 2026
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