guvcview is a simple GTK+ interface for capturing and viewing video from devices supported by the Linux UVC driver.

Geary is an email reader for GNOME designed to let you read your email quickly and effortlessly. Its interface is based on conversations, so you can easily read an entire discussion without having to click from message to message.

Marble is a generic geographical map widget and framework for KDE applications. The Marble widget shows the earth as a sphere but does not require hardware acceleration. A minimal set of geographical data is included, so it can be used without an internet connection.

QasTools is a collection of desktop applications for the Linux sound system ALSA.

Sakura is a terminal emulator based on GTK+ and VTE. It's a terminal emulator with few dependencies, so you don't need a full GNOME desktop installed to have a decent terminal emulator.

Synapse is a graphical launcher enabling you to start applications and also to quickly find and access relevant documents and files (by making use of the Zeitgeist engine).