X11 client-side library (development documentation)

H.265/HEVC video stream encoder (documentation)

Documentation and examples for the Xalan-Java XSLT processor

XSLT processor library for C++ [development docs]

Xapian search engine interface for Java (documentation)

X11 Athena Widget library (documentation)

X C Binding, development documentation

HTML documentation for the xenium library

Validating XML parser for Java -- Documentation and examples

validating XML parser library for C++ (documentation)

X11 miscellaneous extensions library (documentation)

xine video player library – documentation files

library interface to the XKB compiler - documentation

HTML interface documentation and examples for libxml++

GNOME XML library - documentation

XML/Ada, a full XML suite for Ada programmers (documentation)

XML entity and URI resolver library -- documentation

Reusable components used by Batik and FOP (documentation)

XML security library -- documentation

C++ XML parsing library with encryption support (API docs)

Documentation for the libxom-java package

C++ mass spectrometry libraries (documentation files)

utility functions for the Xsettings protocol (Documentation)

Documentation for xsimd

X11 toolkit intrinsics library (documentation)

X11 Record extension library (documentation)

Yet Another JSON Library - library documentation

Fast YAML 1.1 parser and emitter library (documentation)

high performance JSON library written in ANSI C (documentation)

arithmetic and logical operations over arbitrary-precision integers (doc)

Documentation for libzeep

library to access Zeitgeist - documentation

Zemberek documentation

ZenLib C++ utility library -- documentation

API documentation for libzeus-jscl-java

documentation files for the zinnia library

small C++ library for reading zip files (documents)

Developers reference for libzita-resampler library

Zoner Draw/Zebra file reading/converting library -- documentation

API Documentation for zookeeper

libzt is a simple and robust unit test library for C (manual pages)

Vertical Blanking Interval decoder (VBI) - documentation files

Zyan Core Library for C - documentation

fast and lightweight x86/x86-64 disassembler library - documentation

openSUSE/SLES package management system library (documentation)

documentation for lifelines, a genealogy software system

swedish documentation for lifelines, a genealogy software system

Open Source DEM Particle Simulation Software. Documentation and examples

documentation for lighttpd

LilyPond Documentation in info format (and metapackage)