Quick drawing tool

Here's a list of Linux graphic vector editors in wikipedia. From looking at the articles linked from there, it looks like Inkscape, Karbon14, OpenOffice.org Draw and possibly Dia are currently actively developed.

Other previously popular programs, like Sodipodi, SK1, Pencil and Xara Xtreme are no longer actively maintained.

Try Xara Xtreme. It's listed in Synaptic as xaralx package

if you want a quick tool use

1) Pinta: just a clone of MS paint.

2) LibreOffice Draw: very convenient.

3) gnome-paint drawing editor: Very very lightweight and useful.

4) kolor paint: another clone of MS paint.

5) gnu paint: fast and easy.

You can install them just from software center.

Also shutter - which is a screenshot taking program - has a very simple and nice vector drawing tool.

I think the best drawing tool on linux today is Krita. It combines vector and raster layers (and more) on the same canvas.

LWN did a brief review recently.