Sections in byzantium

Administration Utilities
Utilities to administer system resources, manage user accounts, etc.
Mono/CLI
Everything about Mono and the Common Language Infrastructure.
Communication Programs
Software to use your modem in the old fashioned style.
Databases
Database Servers and Clients.
Debian Installer udeb packages
Special packages for building customized debian-installer variants. Do not install them on a normal system!
Debug packages
Packages providing debugging information for executables and shared libraries.
Development
Development utilities, compilers, development environments, libraries, etc.
Documentation
FAQs, HOWTOs and other documents trying to explain everything related to Debian, and software needed to browse documentation (man, info, etc).
Editors
Software to edit files. Programming environments.
Education
Software for learning and teaching.
Electronics
Electronics utilities.
Embedded software
Software suitable for use in embedded applications.
Fonts
Font packages.
Games
Programs to spend a nice time with after all this setting up.
GNOME
The GNOME desktop environment, a powerful, easy to use set of integrated applications.
GNU R
Everything about GNU R, a statistical computation and graphics system.
GNUstep
The GNUstep environment.
Go
Go programming language, libraries, and development tools.
Graphics
Editors, viewers, converters... Everything to become an artist.
Ham Radio
Software for ham radio.
Haskell
Everything about Haskell.
Web Servers
Web servers and their modules.
Interpreters
All kind of interpreters for interpreted languages. Macro processors.
Introspection
Machine readable introspection data for use by development tools.
Java
Everything about Java.
JavaScript
JavaScript programming language, libraries, and development tools.
KDE
The K Desktop Environment, a powerful, easy to use set of integrated applications.
Kernels
Operating System Kernels and related modules.
Library development
Libraries necessary for developers to write programs that use them.
Libraries
Libraries to make other programs work. They provide special features to developers.
Lisp
Everything about Lisp.
Language packs
Localization support for big software packages.
Mail
Programs to route, read, and compose E-mail messages.
Mathematics
Math software.
Meta packages
Packages that mainly provide dependencies on other packages.
Miscellaneous
Miscellaneous utilities that didn't fit well anywhere else.
Network
Daemons and clients to connect your system to the world.
Newsgroups
Software to access Usenet, to set up news servers, etc.
OCaml
Everything about OCaml, an ML language implementation.
Old Libraries
Old versions of libraries, kept for backward compatibility with old applications.
Other OS's and file systems
Software to run programs compiled for other operating systems, and to use their filesystems.
Perl
Everything about Perl, an interpreted scripting language.
PHP
Everything about PHP.
Python
Everything about Python, an interpreted, interactive object oriented language.
Ruby
Everything about Ruby, an interpreted object oriented language.
Rust
Rust programming language, library crates, and development tools.
Science
Tools for scientific work.
Shells
Command shells. Friendly user interfaces for beginners.
Sound
Utilities to deal with sound: mixers, players, recorders, CD players, etc.
Tasks
Packages that are used by 'tasksel', a simple interface for users who want to configure their system to perform a specific task.
TeX
The famous typesetting software and related programs.
Text Processing
Utilities to format and print text documents.
Utilities
Utilities for file/disk manipulation, backup and archive tools, system monitoring, input systems, etc.
Version Control Systems
Version control systems and related utilities.
Video
Video viewers, editors, recording, streaming.
Web Software
Web servers, browsers, proxies, download tools etc.
X Window System software
X servers, libraries, window managers, terminal emulators and many related applications.
Xfce
Xfce, a fast and lightweight Desktop Environment.
Zope/Plone Framework
Zope Application Server and Plone Content Managment System.