Igbinary is a drop in replacement for the standard PHP serializer. Instead of time and space consuming textual representation, igbinary stores PHP data structures in a compact binary form. Savings are significant when using memcached or similar memory based storages for serialized data.

The nvidia-settings utility is a tool for configuring the NVIDIA Linux graphics driver. It operates by communicating with the NVIDIA X driver, querying and updating state as appropriate. This communication is done with the NV-CONTROL X extension.

OAuth is an authorization protocol built on top of HTTP which allows applications to securely access data without having to store usernames and passwords.

ps is an extension similar to the pdf extension but for creating PostScript files. Its api is modelled after the pdf extension. It has some advanced features like taking kerning into account and support for hyphenation. PostScript files can converted to pdf files with ghostscript retaining hyperlinks and bookmarks.

Qbs is a general purpose cross-platform build tool that aims at fast and correct incremental builds. It features a project description language that is similar to QML.

The libpe1 package provides a shared library which allows reading PE 32 and 64-bit files. Third party programs depend on this package to read internals of PE files.