Network Security Services
| Network Security Services | |
|---|---|
| Screenshot of  about:supporton Firefox 133, showing Network Security Services 3.106 and related libraries version information | |
| Developer(s) | Mozilla, AOL, Red Hat, Sun Microsystems, Oracle Corporation, Google and others | 
| Stable release | 3.112 
   / 23 May 2025 | 
| Repository | |
| Written in | C, assembly | 
| Operating system | Cross-platform | 
| Platform | Cross-platform | 
| Type | Libraries | 
| License | MPL 2.0 | 
| Website | developer | 
Network Security Services (NSS) is a collection of cryptographic computer libraries designed to support cross-platform development of security-enabled client and server applications with optional support for hardware TLS/SSL acceleration on the server side and hardware smart cards on the client side. NSS provides a complete open-source implementation of cryptographic libraries supporting Transport Layer Security (TLS) / Secure Sockets Layer (SSL) and S/MIME. NSS releases prior to version 3.14 are tri-licensed under the Mozilla Public License 1.1, the GNU General Public License, and the GNU Lesser General Public License. Since release 3.14, NSS releases are licensed under GPL-compatible Mozilla Public License 2.0.