eSpeak is a software speech synthesizer for English, and some other languages.

WireGuard is a novel VPN that runs inside the Linux Kernel and uses state-of-the-art cryptography (the "Noise" protocol). It aims to be faster, simpler, leaner, and more useful than IPSec, while avoiding the massive headache. It intends to be considerably more performant than OpenVPN. WireGuard is designed as a general purpose VPN for running on embedded interfaces and super computers alike, fit for many different circumstances. It runs over UDP.

xlog is a logging program for amateur radio operators which can be used for daily logging and contest. Logs are stored into a text file.

GnuTLS is a portable library which implements the Transport Layer Security (TLS 1.0, 1.1, 1.2, 1.3) and Datagram Transport Layer Security (DTLS 1.0, 1.2) protocols.