1. Faster User Switch
If you happen to share a computer with one or more individuals, switching users is very important. This little plasma widget makes it easy to select a currently logged-in user and switch to that account. It can display user avatars, their names, or both. It is a nice widget to add to a panel for easy access. It also provides a quick interface for starting new user sessions.
2. Kbackup
Kbackup has been around for a long time, but it just received an update. With it you can quickly and easily backup any directory on your computer, specify where you want the backups to go, and have them archived in the folder or device of your choice. This app is lightweight, simple, and does exactly what it says. Packages for Kbackup are available in Ubuntu repositories and other Linux distributions.
3. Converseen
This nifty little application is a must for anyone who works with a great deal of images. It is a pure Qt app, rather than a KDE one, but that means it still integrates perfectly with KDE. With Converseen you can convert batches of images to any format, any size, any resolution, and to any naming scheme you want. It allows you to make multiple changes on the fly and then save the new images wherever you want. Best of all, Converseen supports just about every image format you can imagine.
4. Muon Package Management Suite
The graphical package manager frontends for KDE have always felt a bit like second-class citizens to Synaptic for GTK. Muon comes very close to evening the playing field. With it you can search, update, install, and receive update notifications for packages with ease. Muon Software Center provides a more visual approach to installation, similar to Ubuntu Software Center. Based on QApt, the entire application suite is lightweight and fast, without some of the hiccups of other frontends. Muon is available in many Linux distribution repositories.
5. Clementine
Not everyone was in love with the new interface and features of Amarok 2 that came with KDE 4. For those who still love the old Amarok 1.4 look and feel, Clementine is a Qt music app, inspired by that code tree with quite a bit of its own unique features. Features include lyrics, artist bios, tabbed playlists, Wii remote support, visualizations, iPod, iPhone, and mass storage USB support, album cover art, Internet music (Last.fm, SomaFM, Magnatune, Jamendo, and Icecast), and music format conversion. You can download Clementine for Linux, Windows, Mac OS X, or the source code for other operating systems.
There are plenty of other great apps hiding on KDE-Apps.org. Many are updated regularly and well maintained. If you have a favorite third-party KDE app, feel free to share it in the comments section. Also, if you would like to read a review of any app, make sure to suggest it to MakeTechEasier. Recommended reading: 5 Intriguing KDE Apps
