Linux: Sometimes you just need to see what's inside a file without actually opening the application meant to handle it. Gloobus, a sleek, dark file previewer based on the Mac Quicklook tool, wants to make file previews elegant and convenient.
Ubuntu and other GNOME-based Linux distributions have their own built-in file preview tool, sure. But that previewer doesn't act on every file type, leaving you sometimes regretting a double-click as GIMP or another heavy tool loads up with your file. And thumbnail icon previews aren't available for every file you can create or download. Gloobus aims to provide universal file previews inside its dark, stylish interface.
Installing Gloobus isn't quite a one-step process — you'll need to install either a repository or compile from source to patch your system's desktop display program (Nautilus) to work better with Gloobus. Once it is there, though, smacking the space bar on any file brings up a preview. If you like how Gloobus looks, you can install CoverGloobus, which shows the cover art for the music you're currently playing, whether you've downloaded it or not.
Gloobus and its related plug-ins are free downloads for GNOME-based Linux systems only. Hit the link below and its Installation page for help getting Gloobus up and running.