GUI programs

• LXDE
• argouml - modelling tool that helps you do your design using UML
• blueman - bluetooth manager
• conky - configurable system monitor for X
• chromium - open-source version of Google Chrome web browser
• fbreader - E-Book reader that supports many e-book formats
• firefox - web browser from Mozilla
• fliewr - Flickr viewr
• gcolor2 - color selector
• gimp - image manipulation program
• gpodder - gPodder is a Podcast receiver/catcher
• grumblr - Tumblr companion
• gitg - git repository viewer
• gpicview - simple and fast image viewer
• inkscape - SVG based generic vector-drawing program
• meld - graphical diff and merge tool
• mysql-gui-tools - MySQL GUI Tools
• pidgin - GTK Instant Messenger client
• scite - very powerful editor for programmers
• shutter - feature-rich screenshot program
• slim - simple Login Manager
• ted - X-based rich text editor

Console programs

System

• devilspie - A Window Matching utility similar to Sawfish's Matched Windows feature
• htop - interactive process viewer
• ipcalc - calculates broadcast/network/etc from an IP address and netmask
• lsof - Lists open files for running Unix processes
• _mc_ - GNU Midnight Commander, a text based file manager
• rename - tool for easily renaming files
• qalc - modern multi-purpose calculator
• sed - Super-useful stream editor
• sipcalc - advanced console-based IP subnet calculator.
• slocate - Secure way to index and quickly search for files on your system
• xbindkeys - Tool for launching commands on keystrokes

Development

• git - the revision control system heavily used by the Linux kernel team
• screen - full-screen window manager that multiplexes a physical terminal between several processes
• vim - an improved vi-style text editor
• mytop - a top clone for mysql
• sqlite - an SQL Database Engine in a C Library

Graphics

• exiv2 - EXIF and IPTC metadata utility
• imagemagick - A collection of tools and libraries for many image formats

Multimedia

• abcde - CD ripper
• cdw - An ncurses based console frontend for cdrtools and dvd+rw-tools
• eyeD3 - Utility for manipulating ID3 (v1 + v2) tags
• mpd - Music Player Daemon
• mplayer - Media Player for Linux
• ncmpcpp - mpd client

Networking

• bind-tools - bind tools: dig, nslookup, host, nsupdate, dnssec-keygen
• bti - A command line twitter/identi.ca client
• curl - A Client that groks URLs
• iputils - Network monitoring tools including ping and ping6
• links - links is a fast lightweight text and graphic web-browser
• mtr - My TraceRoute. Excellent network diagnostic tool.
• ncftp - extremely configurable ftp client
• nmap - utility for network exploration or security auditing
• openssh - Port of OpenBSD's free SSH release
• rsync - File transfer program to keep remote files into sync
• rtorrent - bittorrent client
• stunnel - TLS/SSL - Port Wrapper
• telnet-bsd - Telnet and telnetd ported from OpenBSD with IPv6 support
• wget - Network utility to retrieve files from the WWW
• whois - improved Whois Client