Primary definition
Software not protected by copyright laws of any nation that may be freely used without permission of or payment to the creator, and that carries no warranties from or liabilities to the creator.
Also known asPD software · uncopyrighted software · free software · open source software · non-proprietary software
2 sources cited4 related termsReviewed Aug 10, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
Software not protected by copyright laws of any nation that may be freely used without permission of or payment to the creator, and that carries no warranties from or liabilities to the creator.
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Public Domain Software. In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/public-domain-software
Sources
2 cited · last checked Aug 10, 2026
01
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
High consensus
02
The Cyber Glossary
The Cyber Glossary
Multi-source
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