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GLOBAL related tools

Xgtags.el provides an interface to the GLOBAL cross-refencing tools. While gtags.el, that comes with the GLOBAL distribution, is more a replacement for emacs' own find-tag/pop-tag-mark facility with some extra stuff, xgtags.el tries to permit the same functionality as gtags.el, but behaves more like xcscope.el, the emacs interface for cscope (
Doxygen Release 1.4.3 or higher
Doxygen is a documentation system for C++, Java, IDL and C.
Doxygen Release 1.4.3 includs new config option USE_HTAGS. When enabled in combination with SOURCE_BROWSER=YES, the source browser of htags(1) is used instead of doxygen's own. This facility needs GLOBAL-4.8.6 or the later.
Glimmer is a simple code editor for use with just about any programming language, written by Chris Phelps. It supports GLOBAL by script.
Nvi-1.81.5 editor
Nvi-1.81.5 is the latest nvi supported by Sven Verdoolaege. You can use GLOBAL from this editor using which is part of the GLOBAL package.
Vim editor
Vim is a vi clone written by Bram Moolenaar. You can use GLOBAL from this editor using gtags.vim script.
Elvis editor
Elvis is a vi clone written by Steve Kirkendall, which has two variables "tagprg" and "tagprgonce" for running an external tag search program. You can use them with GLOBAL.
Emacs is the extensible, customizable, self-documenting real-time display editor, written by Richard Stallman. You can use this program as a front end of GLOBAL using gtags.el which is part of the GLOBAL package.
Less is a popular file viewer written by Mark Nudelman. In less-370 or the later, you can use GLOBAL from this tool.
ID utilities
ID utilities is a very powerful token tag system for generic text file. Its index file is very small and searching is very fast. You can call this command from global(1).
Bash is the shell, or command language interpreter, that will appear in the GNU operating system. You can use bash as a special shell for GLOBAL by Globash which is included in GLOBAL package.
Automake is a tool for automatically generating `' files compliant with the GNU Coding Standards. Automake supports GLOBAL by its GTAGS target.
FreeBSD build system
FreeBSD adopted GLOBAL as the standard source code tag system in its build system.


GCC-XML is a C++ parser, the C++ front-end to GCC, which is currently able to deal with the language in its entirety.
This is a parser library aimed at developers of free IDEs. SourceBase aims to make parsing based features easy to implement. These include intellisense code completion, producing call graphs and dependency trees, etc.

Tag commands

Exuberant Ctags
Exuberant Ctags is a reimplementation of the ctags(1), written by Darren Hiebert. It is very robust in parsing code and supports many languages and many environments.
JTags is a ctags like program for Java language, written by Claudio Fleiner.

Source code browsing Tools

OpenGrok is a fast and usable source code search and cross reference engine. It helps you search, cross-reference and navigate your source tree. It can understand various program file formats and version control histories like SCCS, RCS, CVS and Subversion. It is written in Java.
Gonzui is a source code search engine for accelerating open source software development. You can use this tool for your local source code.
PHPXref is a developer tool that's designed to ease the process of working on large PHP projects by making it very fast and easy to browse the code documentation along with the code itself.
ncc is a compiler that produces program analysis information. ncc is a decent replacement of cflow and cscope able to analyse any program using the gcc compiler.
A general purpose source code indexer and cross-referencer that provides web-based browsing of source code with links to the definition and usage of any identifier. Supports multiple languages.
TagSearch is a command line tool for searching Tags in Exuberant ctags Files. - Search for special tag kind (classes, variable definitions ...) - configurable output format - search case sensitiv/insensitiv - search for partial or full Match.
Freescope is a programmer tool that provides source code browsing on UNIX-like operating systems. It is a clone of the cscope program but has its own unique features such as symbol completion and easy result browsing.
KScope is a KDE front-end to Cscope. It provides a source-editing environment for large C projects, such as the Linux kernel.
The "Tag List" plugin is a source code browser for the Vim editor. It provides an overview of the structure of source code files and allows you to efficiently browse through source code files in different programming languages.
GNU cflow
GNU cflow analyzes a collection of C source files and prints a graph, charting control flow within the program.
Cxref is a C source code cross referencing and documenting program for UNIX, written by Andrew M. Bishop. Cxref makes both html and latex style document.
Sapid (Sophisticated API for software Development) is a CASE tool platform based on Sophisticated Software Repository, by Nagoya University.
Cscope is a developer's tool for browsing program code. The cscope code has been released as Open Source by Santa Cruz Operation, Inc. (SCO) under the BSD license.
Cbrowser is a graphical C/C++ source code searching and browsing tool, and a hierarchical function call viewer, written by Chris Felaco.
Source-Navigator is a source code analysis tool by Source-Navigator Team. With it, you can edit your source code, display relationships between classes and functions and members, and display call trees. It is distributed under GPL.
Hypersrc is a GTK+/GNOME program for browsing source code, written by Jim Brooks. It is distributed under GPL.
ECB(Emacs Code Browser)
ECB is source code browser for Emacs. It is a global minor-mode which displays a couple of windows that can be used to browse directories, files and methods. It supports method parsing for Java, C, C++, Elisp etc.
Htmlfontify provides a means of converting individual emacs buffers, source files, or entire source trees to html, preserving formatting and emacs colourisation / syntax highlighting as much as possible through careful application of CSS stylesheets and html tags.
GNU Source-highlight
Source-highlight, given a source file, produces a document with syntax highlighting. This package can handle Java, Javascript, C,C+, Prolog, Perl, Php3, Python, Flex, ChangeLog and Ruby as source languages, and HTML, XHTML and ANSI color escape sequences as output formats.

Documentation system for source code

phpDocumentor is the world standard auto-documentation tool for PHP. Written in PHP, phpDocumentor can be used directly from the command-line, or through an easy to use web interface.
DOC++ is a documentation system for C/C++ and Java generating both, LaTeX output for high quality hardcopies and HTML output for sophisticated online browsing of your documentation.
ROBODoc is a documentation tool. It extracts specially formated comment headers from the source file and puts them in a separate file. ROBODoc thus allows you to include the program documentation in the source code and avoid having to maintain two separate documents.
ScanDoc is a Perl script which scans C++ source code for specially-formatted comments and produces attractive, organized, indexed documentation.
Doxygen is a documentation system for C++, Java, IDL (Corba, Microsoft and KDE-DCOP flavors) and C. You can select output format in HTML, LaTeX, RTF (MS-Word), PostScript, hyperlinked PDF, compressed HTML, and Unix man pages.
Synopsis is a general source code documentation tool. By means of a modular structure it adapts to different styles of embedded documentation, different programming languages and various output formats. It scales well with the size of the project by allowing processing to be controlled by Makefiles.
CWEB is a version of WEB for documenting C, C++, and Java programs. WEB was adapted to C by Silvio Levy in 1987, and since then both Knuth and Levy have revised and enhanced the system in many ways, notably to support C++ and ANSI C. Thus CWEB combines TeX with today's most widely used professional programming languages.

Hypertext of source code

The Linux Source Navigator
This is a CGI interface to browse the entire Linux kernel source, written by Ben Walter.
FreeBSD and Linux Kernel Cross-Reference
This site provides experimental source code browsing for the FreeBSD and Linux kernels by Robert Watson, based on the software provided by the LXR Project.
Cross-Referencing Linux
A hypertext presentation of the Linux source code by Arne Georg Gleditsch and Per Kristian Gjermshus using LXR.
FreeBSD Source Code Tour
This tour guides you to the latest FreeBSD-current and FreeBSD-stable source code. These hypertext are generated every day using GLOBAL by The FreeBSD Project (Japan).
UNIX kernel source tour!
This tour contains eight kernels: FreeBSD 4.5, NetBSD 1.4.3, OpenBSD 3.0, Linux 2.4.18, GNU Hurd 0.2, Minix 2.0.0, 4.3BSD and UNIX V7(historic UNIX).

UNIX and its clone's Kernel source code

The Unix Heritage Society
Unix Archive contains 5th, 6th and 7th Edition Unix and more. Now, you can use these source code under BSD style license.
CSRG Archive CD-ROMs
Kirk McKusick is selling a 4CD set of all the 4BSD releases from the Computer Systems Research Group. This also includes 1, 2, and 3BSD.
FreeBSD, NetBSD, OpenBSD
*BSD's source code is freely available from their FTP sites, and also available in CD sets. You can get the information from their web site.
The Linux Kernel Archives
This is the primary site for the Linux kernel source, but it has much more than just kernels.
GNU Hurd
The GNU Hurd is the GNU project's replacement for the Unix kernel. You can get the latest Hurd source code via the GNU Project's CVS server.
MINIX 3 is a new open-source operating system designed to be highly reliable, flexible, and secure. It is loosely based somewhat on previous versions of MINIX, but is fundamentally different in many key ways.
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