Windows users often require a direct installer since the OS does not include OpenSSL by default.

: Use the built-in Windows Package Manager by running winget install OpenSSL in your command prompt.

: Shining Light Productions (slproweb.com) provides popular "Light" and "Full" installers for Win32 and Win64.

is the world's most widely used open-source cryptographic toolkit , providing essential security for the internet through Transport Layer Security (TLS) and a vast library of general-purpose cryptography functions. Whether you need to secure a web server, generate digital certificates, or encrypt sensitive data, downloading the right version of the OpenSSL library is your first step. 1. Official OpenSSL Source Code Downloads

: The current main release, featuring a modular provider architecture and Apache License 2.0 compatibility.

Most Linux distributions come with OpenSSL pre-installed. To update or install it manually: openssl/openssl: General purpose TLS and crypto library