LilyPond supports many forms of music notation constructs, including
chord names, drum notation, figured bass, grace notes, guitar tablature,
modern notation (cluster notation and rhythmic grouping), tremolos,
(nested) tuplets in arbitrary ratios, and more.

LilyPond's text-based music input language support can integrate into
LaTeX, HTML and Texinfo seamlessly, allowing single sheet music
or musicological treatises to be written from a single source. Form and
content are separate, and with LilyPond's expert automated formatting,
users don't need typographical expertise to produce good notation.

LilyPond produces PDF, PostScript, SVG, or TeX printed output, as well
as MIDI for listening pleasures. LilyPond is exported from the
RoseGarden and NoteEdit GUIs, and can import ABC, ETF and MIDI.

LilyPond is part of the GNU Project.

Authors:
--------
Erlend Aasland
Pal Benko
Juliusz Chroboczek
David Feuer
Bernard Hurley
Chris Jackson
Heikki Junes
Reinhold Kainhofer
Michael Krause
Jean-Baptiste Lamy
Werner Lemberg
Joe Neeman
Han-Wen Nienhuys
Jan Nieuwenhuizen
Jürgen Reuter
Nicolas Sceaux
Carl Sorensen
Rune Zedeler

FONT
Jürgen Reuter
Werner Lemberg
Chris Jackson
Rune Zedeler
Han-Wen Nienhuys
Jan Nieuwenhuizen
Tom Cato Amundsen
Arno Waschk

SUPPORT (distributions, editor support, lilypond-book)
Anthony Fok
Chris Jackson
Heikki Junes
David Svoboda

OpenCOLLADA is a stream based reader and writer library for COLLADA files

Rosegarden is a well-rounded audio and MIDI sequencer,
score editor, and general-purpose music composition and
editing environment. Rosegarden is an easy-to-learn,
attractive application that runs on Linux, ideal for
composers, musicians, music students, and small studio or
home recording environments.
This is a complete rewrite of the old 1.7.x series of
rosegarden and has many new features and enhancements.
See the changelog for details.

The xsynth-dssi package contains the Xsynth-DSSI plugin,
a classic-analog (VCOs-VCF-VCA) style software synthesizer
with an editor GUI. Xsynth-DSSI was written by Sean Bolton,
and was based on Steve Brooke's Xsynth code, but has since
aquired polyphonic operation, band-limited oscillators,
a better filter mode, and velocity-sensitive envelopes.

Author:
--------
Sean Bolton

When you create a PDF document using something like a TeX system you may include many small PDF files in the main PDF file. It is common for each of the small PDF files to use the same fonts. If the small PDF files contain embedded font subsets, the TeX system includes them as-is in the main PDF. As a result, several subsets of the same font are embedded in the main PDF. It is not possible to remove the duplicates since they are different subsets. This vastly increases the size of the main PDF file. On the other hand, if the small PDF files contain embedded full font sets, the TeX system also includes all of them in the main PDF. This time, the main PDF contains duplicates of the same full sets of fonts. Therefore, Ghostscript can remove the duplicates. This may considerably reduce the main PDF-file's size. Finally, if the small PDF files contain some fonts that are not embedded, the TeX system outputs the main PDF file with some fonts missing. In this case, Ghostscript can embed the necessary fonts. It can significantly reduce the required disk size. Either way, when Ghostscript reads the main PDF produced by the TeX system and outputs the final PDF it does not preserve PDF page-mode and named-destinations etc. As a result, when you open the final PDF, it is not displayed correctly. Also, remote PDF links will not work correctly. This program is able to extract page mode and named destinations as PDFmark from PDF. By using this you can get the small PDF files that have preserved them.

WxSVG is a C++ library to create, manipulate and render SVG files.