NiktoQT is a frontend GUI for the popular nikto web scanning tool. It will create a target list based on nmap output.
DragonEdit Text Encryption is a QT-based text editor that encrypts your text with a password hash.
USB Autorun Protector is a free software to protect you from any kinds of autorun viruses.
A Framework bases on a modular system for developers in PHP5 under the QPL licence.