https://www.abs.org.sg/consumer-banking/pay-now

PayNow is an enhanced peer-to-peer funds transfer service available to customers of these nine participating banks: Bank of China, Citibank Singapore Limited, DBS Bank/POSB, HSBC, Industrial and Commercial Bank of China Limited, Maybank, OCBC Bank, Standard Chartered Bank, and United Overseas Bank.

Customers can register on their own banking application. Just need to know the other party's registered mobile number to make a direct bank transfer.

https://www.paypal.com/sg/home

Payhal support MastCard, Visa, Credit, Debit or Prepaid Card