The Common UNIX Printing System (or CUPS(tm)) is a printing system and general replacement for lpr, lpd and the like. It supports the Internet Printing Protocol (IPP), and has its own filtering driver model for handling various document types.

Elasticsearch is a search server based on Lucene. It provides a distributed, multitenant-capable full-text search engine with a RESTful web interface and schema-free JSON documents.

This package is a dummy transitional package. It can be safely removed.

GStreamer is a streaming media framework, based on graphs of filters which operate on media data. Applications using this library can do anything from real-time sound processing to playing videos, and just about anything else media-related. Its plugin-based architecture means that new data types or processing capabilities can be added simply by installing new plug-ins.

RabbitVCS is a set of graphical tools written to provide simple and straightforward access to the version control systems SVN (Subversion) and Git. This is the extension for the Nautilus file manager.