GnuTLS

GnuTLS is an open-source secure communications library designed to implement cryptographic protocols such as TLS, SSL, and DTLS for protecting data transmitted over networks. Developed as part of the GNU Project, it provides a robust framework for building secure client-server applications and services that require encrypted communication channels. The library includes implementations of widely used security standards and supports modern encryption algorithms, authentication mechanisms, and certificate management features. GnuTLS is frequently used in network servers, email systems, VPNs, and embedded systems where developers need reliable and standards-compliant TLS functionality. Because it is distributed as a programmable library rather than a standalone application, it integrates directly into software that needs secure network connections. The project emphasizes open standards and interoperability while remaining flexible enough to support various platforms and architectures.