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Toolkit for Secure Sockets Layer and Transport Layer Security

The OpenSSL Project is a collaborative effort to develop a robust, professional-grade, fully featured, free toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a full-strength general-purpose cryptography library.


User FAQ included; User manpage included and available in HTML format from


Download version 1.0.2d (stable)
released on 9 July 2015

VCS Checkout


Related Projects


LicenseVerified byVerified onNotes
OpenSSL LicenseJanet Casey6 August 2002

Leaders and contributors

OpenSSL Project Team Maintainer

Resources and communication

AudienceResource typeURI
UserMailing List Subscribe
UserVCS Repository Webview
User,DeveloperBug Tracking
DeveloperVCS Repository Webview

Software prerequisites

Required to buildmake
Required to usePerl 5

This entry (in part or in whole) was last reviewed on 25 September 2015.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.