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S/MIME

A standard for public key encryption and signing of MIME data. Defined in few RFCs.

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Open-Source Alternatives to S/MIME

GnuPG

Product categories

Cloud Storage Encryption Security & Privacy Security Tools

Summary

The top open-source alternatives to S/MIME are GnuPG. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.
  1. GnuPG Landing Page
    GnuPG Landing Page
    1

    GnuPG

    GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP).
    Pricing:
    • Open Source

    #Security & Privacy #Security Tools #Encryption 38 social mentions

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