(CVS: Concurrent Versions System, GUI: Graphical User Interface)

Cervisia

A graphical frontend to CVS. (C++) [GNU/Linux, Unix] It aims to support CVS and other version control system programs in a unified interface
http://cervisia.kde.org/

gPHPedit

a GNOME2 editor that is dedicated to editing PHP files and other supporting files, like HTML/CSS
http://www.gphpedit.org

Gedit

Lightweight but powerful text editor of the GNOME project.
http://www.gnome.org/projects/gedit/

Gedit

Lightweight but powerful text editor of the GNOME project.
http://www.gnome.org/projects/gedit/

Kate

The Kate project develops two main products: KatePart, the advanced editor component which is used in numerous KDE applications requiring a text editing component, and Kate, a MDI text editor application. In addition, we provide KWrite, a simple SDI editor shell which allows the user to select his/her favourite editor component.
http://kate-editor.org/

Mousepad

A simple text editor for Xfce based on Leafpad ("...and everything foes faster").
http://www.xfce.org/projects/mousepad/

BloGTK

A weblog client that allows you to post to your weblog from Linux without the need for a separate browser window.
http://blogtk.sourceforge.net/

gThumb

An image viewer and browser for the GNOME Desktop.
http://gthumb.sourceforge.net/

Ksnapshot

a simple applet for taking screenshots. It is capable of capturing images of the whole desktop, a single window, a section of a window or a selected region. The images can then be saved in a variety of formats.
http://freshmeat.net/projects/ksnapshot/

Istanbul

a desktop session recorder for the Free Desktop. Istanbul project records your session into an Ogg Theora video file. To start the recording, you click on its icon in the notification area. To stop you click its icon again. It works on Gnome, KDE, XFCE and others.

http://live.gnome.org/Istanbul

gFTP

gFTP is a free multithreaded ftp client for *NIX based machines running X11R6 or later.
http://gftp.seul.org/

Konqueror

A web browser, file manager and file viewer designed as a core part of the K Desktop Environment.
http://www.konqueror.org/

Ark

A graphical program for managing various archive formats within the KDE environment. Archives can be viewed, extracted, created and modified from within Ark. The program can handle various formats such as tar, gzip, bzip2, zip, rar and lha (if appropriate command-line programs are installed). Ark can work closely with Konqueror in the KDE environment to handle archives, if you install the Konqueror Integration plugin available in the konq-plugins package.
http://linuxappfinder.com/package/ark