They're... Plugins! You can add them to roblox studio and they have the same power as execute script.
Here is an example:
plugin = PluginManager():CreatePlugin()
toolbar = plugin:CreateToolbar("Antivirus")
toolbarbutton = toolbar:CreateButton("Clean slate Antivirus", "Clean slate Antivirus", "CSA.png")
toolbarbutton.Click:connect(function()
end)
-[Insert witty comment here] |