Certify One: all versions and old releases

Verify the confidentiality, integrity, authenticity, and availability of encrypted communications.

3 versions of Certify One are listed here, from May 1, 2024 to the current 4.2.3. Each one links to the publisher’s own installer files.

3 versions over 1 year · about 2.3 a year

Version	Date	Size	Files
4.2.3Latest	August 22, 2025	20.9 MB	64-bit EXE 20.9 MB
4.1.3	May 23, 2025	—	64-bit EXE
4.0.8	May 1, 2024	—	64-bit EXE

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