LGPLv2+ and LGPLv2+ with exceptions and GPLv2+ and GPLv2+ with exceptions and BSD and Inner-Net-2.0 and ISC and Public Domain and GFDL-1.3-only
The core library that forms the basis for projects such as GTK+ and GNOME
GLib is a bundle of three (formerly five) low-level system libraries written in C and developed mainly by GNOME. GLib's code was separated from GTK, so it can be used by software other than GNOME and has been developed in parallel ever since.
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GStreamer streaming media framework base plugins
GStreamer is a graphics library for built-in media processing components. BasePlug-ins is a the collections used to maintain the GStreamer plugin.
Extra GStreamer plugins with good code and licensing
GStreamer is a streaming media framework, based on graphs of filters which operate on media data. GStreamer Good Plugins is a collection of well-supported plugins of good quality and under the LGPL license. gstreamer1-plugins-good-extras contains extra "good" plugins which are not used very much and require additional libraries to be installed.
Bindings for GStreamer 1.0, the open source multimedia framework
GStreamer1 implements a framework that allows for processing and encoding of multimedia sources in a manner similar to a shell pipeline. Because it's introspection-based, most of the classes follow directly from the C API. Therefore, most of the documentation is by example rather than a full breakdown of the class structure.
The GNU C Library project provides the core libraries for the GNU system and GNU/Linux systems, as well as many other systems that use Linux as the kernel. These libraries provide critical APIs including ISO C11, POSIX.1-2008, BSD, OS-specific APIs and more. These APIs include such foundational facilities as open, read, write, malloc, printf, getaddrinfo, dlopen, pthread_create, crypt, login, exit and more.
GStreamer plugins with good code and licensing
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 plugins. GStreamer Good Plugins is a collection of well-supported plugins of good quality and under the LGPL license.