Splitting all lines in layer at vertices using QGIS?

I want to automatically split all lines in a QGIS layer at their vertices (like this).

I've done a google search and found this article, which is quite close but the workflow is complicated. Because I'll have to train my co-workers (who are unfamiliar with GIS) to use this tool, I want something as simple as a plugin or something that doesn't require GRASS. Since it's been a long time from 2010 - the time of the previous answer, I wonder if there is any better way to achieve the same result?

Answer

Explode lines from the Processing Toolbox will split all lines at their vertices to separate lines.

Menu Processing -> Toolbox. Type "explode" into the search field to find the function. Select your line layer from the dropdown and start. This will produce a new layer.

Selecting one or more lines from the line layer will produce a splitted layer with only these features, discarding the rest.

Note: As QGIS is moving fast, all infos below are outdated already.

I think Explode lines would be the the noob-solution through the SEXTANTE toolbox. QGIS Geoalgorithms > Vector geometry tools > Explode lines. Unfortunately, it does not seem to work at the moment, i get an error message only.

Traceback (most recent call last):
  File "path/.qgis//python/plugins\sextante\core\GeoAlgorithm.py", line 145, in execute
    self.processAlgorithm(progress)
  File "path/.qgis//python/plugins\sextante\algs\Explode.py", line 58, in processAlgorithm

    features = QGisLayers.features(layer)
NameError: global name 'layer' is not defined

A working solution is the Split Feature-Plugin from the "contributed" repository, which does the job for me.

In general I prefer sextante functions over separate plugins, cause the workflow with sextante is so much faster and produces no junk-files of intermediate steps (provided it works).

EDIT: Unfortunately, a lot of plugins were not moved to the official plugin repository yet, but are still only available through the "contributed" plugin repository: http://pyqgis.org/repo/contributed, which was removed from the default repositories list with version 1.8.

There you can download them individually and unzip them in your .qgis/python/plugins folder OR you add this address to your plugins repository list: Plugins -> Fetch python plugins -> Tab "Repositories" -> Add ... -> enter a name and the url.