In my job are currently looking for a ArcGIS free alternative, we try QGIS but ArcGIS reshape feature is very important for us when working with curves. What we do basically is:
We've a line as marked in the red square bellow;
then we select two point of that line as show in the next picture;
and the final result is the geometry reshaped as show in this final picture;
Is there any feature or plugin in QGIS for accomplish this behavior?