OpenSSL icon

OpenSSL icon


Business Software IT and Operations
OpenSSL is a free and open source software cryptography library that implements both the Secure Sockets Layer (SSL) and the Transport Layer Security (TLS) protocols, which are primarily used to provid...e secure communications between web browsers and web servers. In essence, it prevents both eavesdropping and identification of clients. The library also provides tools for creating RSA private keys and certificate signing requests (CSRs), and for managing certificates and performing checksums. Written in C and assembly language, OpenSSL also comes with wrappers for many other programming languages. Versions of the library are available for most operating systems, including Microsoft Windows, Linux, and many versions of Unix and Unix-like operating systems. Its use is so wide that most servers running on the Internet today run it in one form or another. Read moreless

Alternatives to OpenSSL

  1. Tor alternatives



    Tor is a network of servers that are designed to improve Internet privacy and security. The software essentially functions as a secure browser which enables connection to the Internet through a ser...

    {{ alternatives[0].votes }}
  2. PowerShell alternatives



    Download WMF. Windows Management Framework contains the latest versions of PowerShell, DSC, WMI, and WinRM for older versions of Windows. PowerShell Module Browser. Search for PowerShell modules an...

    {{ alternatives[1].votes }}
  3. AES Crypt alternatives

    AES Crypt


    AES Crypt is an advanced file encryption utility that integrates with the Windows shell or runs from the Linux command prompt to provide a simple, yet powerful, tool for encrypting files using the ...

    {{ alternatives[2].votes }}
  4. Boxcryptor alternatives



    Boxcryptor is software program that allows you to easily encrypt your cloud storage system for added security. The program has end to end encryption technology for even greater security. With Boxc...

    {{ alternatives[3].votes }}
  5. Stackfield alternatives



    Improve the functionality of your project teams with the rich functionality offered by Stackfield.

    {{ alternatives[4].votes }}
  6. Hushmail alternatives



    Hushmail is a mobile email app that allows you to send secure emails to both Hushmail users and other email service provider users. The app uses encryption technology to ensure that only the person...

    {{ alternatives[5].votes }}
  7. MX alternatives


    MX enables financial institutions and fintech companies to collect, enrich, present, and act on data — resulting in dramatic gains to the bottom line.

    {{ alternatives[6].votes }}
  8. FileVault alternatives



    FileVault can be used to encrypt the data of a Mac or iOS device. This standard form of encryption for the Mac can prevent devices from being used if they are lost or stolen. The block cipher techn...

    {{ alternatives[7].votes }}
  9. stunnel alternatives



    Home page for stunnel: a multiplatform GNU/GPL-licensed proxy encrypting arbitrary TCP connections with SSL/TLS.

    {{ alternatives[8].votes }}
Suggest an Alternative

Missing a software in the list? We are always happy if you help us making our site even better.

Suggest an Alternative

OpenSSL Reviews

We have 1 review for OpenSSL. The average overall ratings is 4.0 / 5 stars.

Write a Review
grex avatar
My Opinion on OpenSSL
written by grex on 2018-04-06 08:05:01
Ease of Use
Customer Service
Value For Money

Overall Opinion: Whenever you load a web page in a browser using HTTPS, you are likely using OpenSSL, as most web servers run it (66% by the latest estimates). It is as ubiquitous as it is powerful, as it is what secures communication between web servers and browsers. It supports a whole host of cryptography algorithms, including ciphers, cryptographic hash functions and public key cryptography. It is also one of only two open source libraries to receive a FIPS 140-2 compliance certificate from the National Institute of Standards and Technology's Cryptographic Module Validation Program. It does not have many drawbacks, apart from the fact that — by definition — its use in web communications will slow the web server. It has also had many security vulnerabilities over the years. Most notably was the Heartbleed bug in 2014 that allow hackers to obtain portions of the server's application memory. Finally, the project only employees one full-time developer.

Pros: Is completely free to use Is used in most web servers running today Is FIPS 140-2 compliant

Cons: Will slow web servers down (by definition of what it does) Has had many security vulnerabilities over the years The project only employs one full-time developer

grex is using OpenSSL every other week recently.


  • Supports a variety of programming languages
You can always update OpenSSL to add more features!

OpenSSL Videos

Youtube Video: Crypto & Block Cipher Modes (OpenSSL, AES 128, ECB, CBC)

Video also at with notes.

Disclaimer: This video was not made by us, but we found it interesting enough to embed it here.


Commenting on this article is disabled right now.

About This Article

This page was composed by and published by It was created at 2018-04-30 00:30:47 and last edited by at 2020-03-06 07:51:07. This page has been viewed 7947 times.

Did you like this article about OpenSSL? Please rate it!
5 of 7 liked this article. This is equivalent to a star rating of 3.57 / 5.

More Software in Business Software > IT and Operations

More Popular Business Software

Filter Platforms


Filter Features

Works with most ISPs Software is easy to download and install Maximum browsing protection Stackfield's customer service team XTS-AES 128-bit encryption Included on modern Mac devices Prevents unauthorized access to user's device
Suggest an Alternative to OpenSSL
{{ suggestSubmitSuccess }}
You can only sugggest alternatives that are already published on our platform. If you want to submit a software or app, please visit your account page to submit a software.
List of Suggestions
Please start typing the name of the software you want to suggest as alternative to OpenSSL in the field above.
{{ suggestSubmitError }}
Suggest {{ suggestedAlternatives.length }} Alternative(s)
This action requires user authentication. Please log in.
Don't have an account yet? Sign up.