The Enhanced MetaFile format (EMF) is the native vector graphics file format on Windows. Qt is a cross-platform application development framework, widely used for the development of GUI programs. Although it provides tools for almost every aspect of software development, Qt doesn't include a straightforward solution for the export of 2D graphics to the EMF format. EmfEngine covers this lack and enables Qt-based applications to easily export graphics to the Enhanced Metafile format.
RC Flyers Toolkit Box is a handy toolbox for R/C pilots. It helps you manage batteries, flights, charge cycles, and check lists. It helps you keep track of which of your batteries are charged, where and when you have been flying last, how much went in your battery compared to the last cycle, what you have to pack to take with you, and which parts you have to check before flying. For rotary wing users, there is a pinion calculator that quickly gives you an idea about the RPM to be expected.
SleepyHead is cross-platform sleep tracking software with a focus on monitoring CPAP treatment. It features fast, interactive mouse-controlled graphs. It supports Philips Respironics System One Machines, ResMed S9 CPAP machines, DeVilbiss Intellipap machines, and Contec CMS50 Oximeters.
Trojita is a Qt IMAP email client. It is a pure Qt4 application with no additional dependencies. It has a robust IMAP core implemented using Qt's Model-View framework. Standards compliance is a design goal. It has support for bandwidth-saving mode aimed at mobile users with expensive connections. In addition to the usual SSL/TLS connections, the server can be accessed via SSH. It has on-demand body part loading, offline IMAP support, and safe dealing with HTML mail (actually more robust than Thunderbird's).
XRDL is a language and tools for automatic client generation for XML-RPC services. It provides a way to create simple service definitions for XML-RPC services. It is inspired by WSDL, but aims for ease of use in the spirit of XML-RPC. It supports exporting complex (recursive) types, as well as methods. It includes a number of tools, allowing automatic XRDL generation for servers and clients written in PHP or C++/Qt.