Extension - open-source tool working inside browser, that can be linked to a node and act as wallet interface, interact with website and use your keys (like nostr) to sign event. Free, non-kyc.

Account - Your web dashboard to a node (need to link it as well), with some features like LNDhub, Lightning Address, wallet interface, Alby API. Registered via e-mail.

Hub - Node/wallet app with NWC service, LSP integrations and nice interface, that can be linked to the Account or Extension or dozen other tools. Requires Account today.