Libxapp documentation

Xen documentation

XFig on-line documentation and examples

Documentation for xgridfit

documentation for the eXtensible Multi-Dimensional Simulator

XML Document Formatter documentation

X event recorder/replayer - documentation

Python-powered, cross-platform, Unix-gazing shell (documentation)

Miscellaneous documentation for the X.org X Window System

Core documentation for the X.org X Window System

Extended Object Tcl (XOTcl): Object orientation for Tcl - manual

documentation for the xpore Python package

Developer documentation for the xrootd libraries

documentation for xtensor-blas

documentation for xtensor

Documentation for Yacas

HTML documentation for YARA

Ruby documentation tool - documentation

Documentation and examples for Yaws webserver

Z39.50/SRW/SRU toolkit (documentation)

Documentation for Your Own Document Language (Yodl)

documentation for the Yorick interpreted language

Documentation for Yoshimi

Framework for Verilog RTL synthesis (documentation)

Unicode text editor (Documentation)

Finite Element Analysis Program - documentation

collection of reusable Makefiles (manual pages)

zsh documentation - info/HTML format

command line software manager using libzypp (documentation)