The search works by component name by default. If necessary, you can add more parameters into the filter, such as pattern, value or anything else.

This is one of new features in version 5. Find it in "Tools -> PCB Calculator".

There are multiple libraries with capacitors in the latest version (5.1.0.3 at the moment). The names of components in "Capacitors Aluminum SMD" library (and many others) are manufacturers part numbers. For example, UZP1HR33MCL1GB. Knowing the part number, you can find the part on Digikey, Mouser or ...

Thank you for the report but I have never seen the issue. Could you create screen video to show the problem and share on the forum.

You can import Gerber and drill files in PCB Layout. But this won't recover original PCB design in full. You will get many shapes, pads and holes but won't get them as components, nets, traces and copper pours.

Thank you for the feature request.
"Depending on board" trims or expands copper pour regarding on if you created the copper pour bigger or smaller than board outline.
"Snap to Board Outline" option does the above changes automatically once you edited board outline.

In order to get correct BOM and Pick and Place files, it would be better to have mezzanine connector and studs separately instead the composite component. Further in PCB Layout you can group them to operate with items as a whole.

Select two layers at once (board outline and a layer you want to export) then click "Export Layer" button.

We aware of the problem but this seems a Wine issue. The same executable works differently on Windows and Linux. All we can do is to recommend stable version of Wine and 32-bit version of DipTrace even though you have 64-bit system.

Thank you for the report, I see the same. We will investigate whether it's a problem or not as changing layer type to mixed doesn't forbid traces on the layer.