NimbleX is a small Slackware-based Linux distribution optimized to run from a CD, USB drive or a network environment.

NimbleX has been praised for how fast it boots, as well as for its small disk footprint, which is considered surprising for a distribution using KDE as desktop environment.

[5][6] NimbleX is known for its fast boot up which is an important factor in user experience when running from optical media or USB drives.

A review of the 2007 NimbleX edition noted: "Expect it to boot in less than half the time that a live CD from Fedora, Ubuntu, or Knoppix takes.

A review of the 2007 edition wondered "how they managed to include KDE, not to mention the other applications",[7] having included in the size of only 200 MB a window-based graphical user interface (a slimmed down KDE to fit), the Firefox web browser, the office documents editor KOffice, a PDF reader, a media player that can play almost all the file formats without the need to install a codec, the photo editing software GIMP, anti-virus and Bluetooth support integrated to name a few applications included.

[9] NimbleX has included in the 200 MB package some very useful applications like Firefox web browser, KOffice, PDF reader, Kopete instant messenger, KlamAV anti-virus, GIMP photo editor, Bluetooth support, remote connection to other PC.