PostGIS adds support for geographic objects to the PostgreSQL object-relational database. In effect, PostGIS "spatially enables" the PostgreSQL server, allowing it to be used as a backend spatial database for geographic information systems (GIS), much like ESRI's SDE or Oracle's Spatial extension.
Dictconv-cx is a dictionary converter that is a stripped down and expanded version of dictconv. It removes support for the DICT dictionary, stardict, as other tools such as makedict handle it well, and adds support for UTF-8 encoding, keywords longer than 255 characters, 82,000+ character length in definitions, and other changes.
XmlPlus xsd2cpp is a tool that compiles an XML schema into C++ data bindings. When invoked on an input XSD file, it generates the C++ sources (implementation/headers) for the supplied XML schema, a main.cpp template to demonstrate how generated sources can be consumed, and the automake/autoconf files for building the generated source.
bgpfeeder is a program to feed a BGPv4 speaker with an infrequently changing list of static internal routes. It is used at Bytemark to rearrange routing information from the "network organizer" database, to avoid staff having to log in to core routers to effect common routing changes. It is also used to communicate with transit providers to communicate "black hole" information about traffic that should not be passed on to the routers.