This Finpip overview summarizes Interactive Brokers as commonly marketed to retail traders (founded 1978; HQ: Greenwich, USA). Typical platforms include Trader Workstation, IBKR Mobile, Client Portal.
Regulatory snapshot (not legal advice): US SEC/FINRA; FCA; multiple global entities; stocks, options, futures, spot FX
Official website: https://www.interactivebrokers.com/. Confirm licence numbers, product availability, and costs there before funding an account.