The OpenSMTPD server seeks to be * as secure as possible, and uses privilege separation to mitigate possible security bugs * as reliable as possible: any accepted email must not be lost * lean: it covers typical usage cases instead of every obscure one * easy to configure, with a configuration syntax reminiscent of the OpenBSD Packet Filter's (PF) * fast and efficient: it can handle large queues with reasonable performance

This GTK+ theme provides a scalable group of icons to be used by GTK+ applications.

CTSim provides an interactive computed tomography simulator. Computed tomography is the technique of estimating the interior of an object by measuring x-ray absorption through that object.

Antennavis is a visualization toolkit designed to aid the user in better understanding the data output by the NEC2 antenna modelling software.

Dstat is a versatile replacement for vmstat, iostat and ifstat. Dstat overcomes some of the limitations of these programs and adds some extra features.

GEOTRANZ (Geographic Translator) is an application program which allows you to easily convert geographic coordinates among a wide variety of coordinate systems, map projections, and datums. Currently, twenty-five different coordinate systems, map projections, grids, and coding schemes, and over two hundred different datums, are supported.