qgis - Is there a way to automatically snap loose points of lines to close by vertices with Quantum GIS?

I have a vector layer of lines that were drawn with the snapping option off. I need to have them snapped but, there are hundreds of lines. Is there any solution to do this automatically or semi-automatically?

Answer

Maybe the answers to this question are helpful: How to simplify a routable network?

I used GRASS v.clean in the end.