For the Stellar template, we have overridden the following addons*: 

• Articles_Headline*
• Feature
• GMap
• Testimonial Pro
• Slideshow Full*

Their physical location is: templates\shaper_stellar\sppagebuilder\addons\

*Not included by default inside the SPPB Pro package. It also means that these addons cannot be used if you change the default template.