Yes, FXON offers the web version (WebTrader) of MetaTrader 4 (MT4) / MetaTrader 5 (MT5).
WebTrader is a convenient tool that allows you to access your account and trade directly from your browser without downloading the MT4/MT5 app. However, compared to the installed version, some functions are limited, such as the inability to install custom indicators or use EA.
Additionally, only MT5 supports WebTrader on mobile.