For searching tools, there exist multiple extensions for the Desktop version (besides using macOS’s Help menu). Keep in mind that extensions are limited in what they can do by what the SketchUp API provides methods for. For tracking the tools that a user activates, extensions have to use observers and might miss some tool activations or might encounter issues with non-native tools.
- LaunchUp: A search for tools which keeps a history of previously triggered tools (only tools triggered through LaunchUp)
- Eneroth Tool Memory: A switcher for recently used tools (no search)
- LordOfTheToolbars: Toolbar customization with a plethora of features, including LaunchUp’s tool history