Gst-Libav contains a GStreamer plugin for using the encoders, decoders, muxers, and demuxers provided by FFmpeg.

This is a Gstreamer src plugin to use the espeak speech synthesizer as a sound source.

This package provides the smallest selection of GStreamer's "bad" plugin set, essentially containing libraries and the gst-transcoder binary, but none of the actual plugins.

Gst-Plugins-Ugly are the ones that might have a patent noose around their neck, or a lock-up license, or any other problem that makes you think twice about shipping them.

This package contains manuals, tutorials, and API reference for the GStreamer multimedia framework.

The Enlightened Sound Daemon mixes several audio streams for playback by a single audio device. You can also pre-load samples, and play them back without having to send all the data for the sound. Network transparency is also built in, so you can play sounds on one machine, and listen to them on another.

GStreamer-Plugins-Good is a collection of plug-ins you'd want to have right next to you on the battlefield. Shooting sharp and making no mistakes, these plug-ins have it all: good looks, good code, and good licensing. Documented and dressed up in tests. If you're looking for a role model to base your own plug-in on, here it is.

LibDC1394 is a library that provides functionality to control any camera that conforms to the 1394-Based Digital Camera Specification written by the 1394 Trade Association. It utilizes the lowlevel functionality provided by libraw1394 to communicate with the camera. It also uses the video1394 kernel module for the DMA capture of the video flow.

CCExtractor is a tool that analyzes video files and produces independent subtitle files from the closed captions data. It is portable, small, and very fast.

Libvisual is a library that acts as a middle layer between applications that want audio visualisation and audio visualisation plugins.

This package provides a GStreamer extension to handle RTSP connections and messages.

Guile-Present defines a declarative vocabulary for presentations, together with tools to render presentation documents as SVG or PDF. Guile-Present can be used to make presentations programmatically, but also includes a tools to generate PDF presentations out of Org mode and Texinfo documents.

Dragon is a lightweight drag-and-drop source for X where you can run:

dragon file.tar.gz

to get a window with just that file in it, ready to be dragged where you need it. What if you need to drag into something? Using:

dragon --target

you get a window you can drag files and text into. Dropped items are printed to standard output.

GTKmm is the official C++ interface for the popular GUI library GTK+. Highlights include typesafe callbacks, and a comprehensive set of widgets that are easily extensible via inheritance. You can create user interfaces either in code or with the Glade User Interface designer, using libglademm. There's extensive documentation, including API reference and a tutorial.

Volctl is a PulseAudio-enabled tray icon volume control and OSD applet for graphical desktops. It's not meant to be an replacement for a full-featured mixer application. If you're looking for that check out the excellent pavucontrol.

Guile-Cairo wraps the Cairo graphics library for Guile Scheme. Guile-Cairo is complete, wrapping almost all of the Cairo API. It is API stable, providing a firm base on which to do graphics work. Finally, and importantly, it is pleasant to use. You get a powerful and well-maintained graphics library with all of the benefits of Scheme: memory management, exceptions, macros, and a dynamic programming environment.

Cairo provides Perl bindings for the vector graphics library cairo. It supports multiple output targets, including PNG, PDF and SVG. Cairo produces identical output on all those targets.

Pangox was a X backend to pango. It is now obsolete and no longer provided by recent pango releases. pangox-compat provides the functions which were removed.

Girara is a library that implements a user interface that focuses on simplicity and minimalism. Currently based on GTK+, a cross-platform widget toolkit, it provides an interface that focuses on three main components: a so-called view widget that represents the actual application, an input bar that is used to execute commands of the application and the status bar which provides the user with current information.

Cairo is a 2D graphics library with support for multiple output devices. Currently supported output targets include the X Window System (via both Xlib and XCB), Quartz, Win32, image buffers, PostScript, PDF, and SVG file output. Experimental backends include OpenGL, BeOS, OS/2, and DirectFB.

GtkDoc is a tool used to extract API documentation from C-code like Doxygen, but handles documentation of GObject (including signals and properties) that makes it very suitable for GTK+ apps and libraries. It uses docbook for intermediate files and can produce html by default and pdf/man-pages with some extra work.

Ganv is an interactive GTK+ widget for interactive “boxes and lines” or graph-like environments, e.g. modular synths or finite state machine diagrams.

Murrine is a cairo-based GTK+ theming engine. It is named after the glass artworks done by Venicians glass blowers.

Graphene provides graphic types and their relative API; it does not deal with windowing system surfaces, drawing, scene graphs, or input.