Three altcoins, Digitap ($TAP), Hyperliquid (HYPE), and Cardano (ADA), have demonstrated stability during the October crypto market crash. Digitap has successfully raised over $1 million in its presale, highlighting investor confidence in its crypto-to-fiat switch feature. Hyperliquid rebounded by 26% following the crash, bolstered by a $1 billion treasury expansion plan. Meanwhile, Cardano has maintained a stable price of $0.67 as traders anticipate potential ETF approval.