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OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general-purpose cryptography library. OpenSSL is widely used in internet servers, including a majority of HTTPS websites. The project is managed by a worldwide community of volunteers that use the Internet to communicate, plan, and develop the OpenSSL toolkit and its related documentation.
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Website Key Features
SSL/TLS Protocol Implementation
Provides a full-strength general purpose cryptography library including support for SSL v2/v3 and TLS v1.
Cryptographic Algorithms
Supports a wide range of cryptographic algorithms including symmetric, asymmetric, and hash functions.
Certificate Management
Tools for generating RSA, DSA, and ECDSA keys, creating X.509 certificates, CSRs, and CRLs.
Command Line Tools
Offers a variety of command line tools for performing cryptographic operations, testing SSL/TLS connections, and more.
Cross-Platform
Available on a wide range of platforms including Unix, Linux, Windows, and macOS.
Open Source
Released under an Apache-style license, making it free for both personal and commercial use.
High Performance
Optimized for performance, capable of handling high volumes of secure communications.
Extensive Documentation
Comes with comprehensive documentation, including man pages and a wiki.
Community Support
Supported by a large and active community of developers and users.
Regular Updates
Regularly updated to address security vulnerabilities and add new features.
Similar Sites and Competitors
Additional information
License
OpenSSL is licensed under an Apache-style license, which means that you are free to get and use it for commercial and non-commercial purposes as long as you fulfill its conditions.
Security
OpenSSL is subject to regular security audits and has a dedicated team for addressing vulnerabilities.
Contributing
Contributions to OpenSSL are welcome. The project encourages developers to contribute code, documentation, and to participate in the community.
Funding
OpenSSL is funded through donations and sponsorships. The OpenSSL Software Foundation (OSF) is a non-profit organization that supports the development of OpenSSL.
Community
The OpenSSL community is active and includes developers, security experts, and users from around the world. The community contributes to the development, testing, and documentation of OpenSSL.
HTTP headers
Security headers report is a very important part of user data protection. Learn more about http headers for openssl.org