>I'm wondering how can I get a list of all apps installed (like the one from Control Panel)?

A limited way is using WMI, limited and not recommended for it has some undesired effects and for it only list software installed using MSI files, there was a way to make it work with others, but I cannot find my notes about it, nor do I have time to research now.

local loProducts, loProduct, loWMI

loLocator			= CREATEOBJECT('WBEMScripting.SWBEMLocator')
loWMI				= loLocator.ConnectServer()
loProducts			= loWMI.ExecQuery("SELECT * FROM Win32_Product")

For Each loProduct in loProducts
	with loProduct
		if Isnull(.Name)
			loop
		endif
		? .Name, .Caption, .Description, .IdentifyingNumber, .InstallDate, .InstallDate2, .InstallLocation, .SKUNumber, .Vendor, .Version
	endwith
endfor

An alternative would be to scan the registry to find this list (using path SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall)