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PuTTY

3 articles and 78 catalog rows, each traced to the vendor’s own documents.

3Articles·21Rules·45Evidence·12Sources

Encyclopedia Articles

PuTTY licensingCited · Edited 2026-09-27PuTTY redistribution and notice obligationsCited · Edited 2026-09-27PuTTY distribution, verification and version trackingCited · Edited 2026-09-27

Rules

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Copyright and permission notice must be included in all copiesRedistributionCORE SDI attack-detector component carries its own noticeRedistributionDevelopers do not sign indemnities, warranties or individual agreementsCommercialForks and derived software are outside the project's controlPolicyLicence for already obtained versions cannot be revokedTermLicence identified as MIT (SPDX), OSI-approvedDefinitionModification and incorporation into commercial products permitted with notice retainedRedistributionNo ECCN determination or FIPS certification from the developersCompliance

Evidence

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0.79 restores per-machine install scopeDocumentation excerpt0.81 fixes biased P-521 noncesDocumentation excerpt0.84 security fixDocumentation excerpt0.85 security fixDocumentation excerptAll distributed files are GPG-signedDocumentation excerptAuthenticode signatures since 0.67Documentation excerptBelieved 5D002, not definitiveFAQ excerptCompanies can use PuTTY for commercial purposes and owe nothingPolicy excerpt

Sources

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Download PuTTY: latest releaseAnnouncementMIT License (SPDX License List)Licence definitionPuTTY 0.85 source archiveSource codePuTTY Change LogAnnouncementPuTTY download keys and signaturesPolicyPuTTY FAQFAQPuTTY Feedback and bug reportingPolicyPuTTY Licence (web page)Licence
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