I am looking for an application, website or software that automatically scans arbitrase opportunities.
Do you have any recommendations?
There are bots to notify about the price gaps across exchanges but you need to catch the differences; it means when I tried with such bots, the price difference became insignificant before my bitcoin deposit got enough network confirmations. From my experiences, I learned that arbitrage might be possible and decently profitable only for the traders who own accounts in at least 10 different crypto exchanges which includes possible KYC mandatory exchanges.
There are telegram channels who continuously post about gaps in price levels as arbitrage opportunity but when checking they do consider only "Last-Traded-Price" and if you go for buying and selling then you will find no buyer to fulfill your order at the price of higher than your buying price level.
You can simply find price gaps using coinmarketcap's market page manually but very rarely you may find decently profitable arbitrage opportunity hence may not worth the time and efforts.