Licensing ========= wolfSSL’s software is available under two distinct licensing models: open source and standard commercial licensing. Please see the relevant section below for information on each type of license. Open Source ----------- wolfCrypt and wolfSSL software are free software downloads and may be modified to the needs of the user as long as the user adheres to version two of the GPL License. The GPLv2 license can be found on the `gnu.org website `_. Commercial Licensing -------------------- Businesses and enterprises who wish to incorporate wolfSSL products into proprietary appliances or other commercial software products for re-distribution must license commercial versions. Licenses are generally issued for one product and include unlimited royalty-free distribution. Custom licensing terms are also available at licensing@wolfssl.com.