I recently stumbled upon Nautilus Hide, an extension that adds a context menu option to hide / unhide files or folders without renaming them, and I decided to port it to Nemo file manager.

The Shutter Imgur.com upload plugin stopped working recently, so I've been looking for alternatives and I stumbled upon Imgur-Screenshot, a bash script that can take screenshots and upload them to Imgur.

If you copy an image in Nautilus, you can't directly paste it in an image editor, like GIMP, because the file is copied and not the image itself.

Here's where the Nautilus CopyPaste Images extension comes in. This small extension, created by Lorenzo from atareao.es, allows you to copy and paste images as... images, and not as files.

gksu hasn't been updated since 2009 and is not recommended any more. In fact, Ubuntu no longer ships with gksu by default (though it may be installed for many of you, because some apps still depend on it) and it may even be completely removed at some point.

The recommended replacement for gksu is pkexec. Applications like Synaptic, Ubuntu Software Center, Software & Updates and others use it for some time but what if you want to use pkexec with applications like Gedit or Nautilus?

By default, you can't because pkexec can't run graphical applications without having a PolicyKit file installed in /usr/share/polkit-1/actions/ for the app you're trying to run as root, and Ubuntu doesn't ship with PolicyKit files for Nautilus or Gedit.

Folder Color is a file manager extension available for Nautilus, Nemo and Caja, which until recently could only be used to change individual folder colors. The tool was updated yesterday with a new feature: you can now use it to easily change all the folders colors with a click:

Gloobus Preview is a quick file previewer which supports images, documents (pdf, odf, ods, etc.), source files, audio (mp3, wav, ogg and more), video (avi, ogg, mkv, flv, etc.), folders, archives, fonts, plain text files and more.

The tool stopped working with recent Ubuntu versions but thanks to György Balló, you can now use Gloobus Preview in Ubuntu 14.04 and 14.10 (and obviously, other Linux distributions). Update: the PPA now also supports Ubuntu 16.04 and 15.10.

György has fixed various bugs and ported the application to use the latest technologies, along with some new features:

Folder Color is a file manager extension that allows you to easily change folders  icon color, useful for instance to organize your folders, make some important folder stand out, etc.

The latest Folder Color, which already supported Nautilus, adds support for Caja (the default MATE file manager) and Nemo (the default Cinnamon file manager):