GPAL.Browser is the entry point for web automation. GoTo drives a real browser through a page; Get fetches HTML directly with no browser at all. Tabs, history, and the server's last response code round out the basics.
For the most reliable bot-resistant runs, point GPAL at a real Chrome profile that already has a signed-in session, cookies, and browsing history. If you don't specify one, GPAL creates a temporary profile for the session and deletes it afterward - which works, but looks more 'bot-like' and can run into its own problems.
GPALUrl carries a list of storage actions - cookies, localStorage, sessionStorage, indexedDb, and cache - to inspect or change once that URL is active. The With...() calls used to define those actions on the GPALUrl double as filters when called on the browser before RunGet/RunSet/RunDelete, and WithUserDefined gives you a fallback when the built-in fields cannot pin down the action you mean.
GPAL.Application automates desktop programs - GUI applications running outside the browser - using the same selectors, actions, and units of work as GPAL.Browser.
WithHardware switches an element's interaction from programmatic DOM/UI-Automation calls to real OS-level mouse and keyboard events - the same input a person generates - and it works the same way for both browsers and desktop applications.
WithWaitOnDocumentReady and WithWaitOnIdleConnection both make GPAL wait before continuing after a navigation, but they measure 'ready' very differently - and for pages that load data asynchronously, only one of them tells the truth.
WithJavaScript swaps Selenium's normal element interaction for direct JavaScript injection - an escape hatch that's only meaningful for Selenium, since Puppeteer and OttoMagic have no equivalent 'normal' interaction to override in the first place.
WaitFor means two different things depending on where it appears in a workflow: after WithSelector it's a search timeout for elements that haven't appeared yet; after an action it's a plain sleep. Knowing which one you're calling matters.