Back in the day, blockchain.info's
[before moving to .com] explorer had that function but it no longer lists UTXOs as it used to and it keeps on giving inaccurate results & errors...
https://blockchain.info/unspent?address=YOUR ADDRESS
- Keeps on giving "No free outputs to spend" message.
https://www.blockchain.com/btc/unspent?active=YOUR ADDRESS&format=html
- It doesn't support "BECH32 (P2WPKH)" format.
- It shows its results with a string of words/letters
[not like how it used to show (image source)].
Take note: I'm not looking for a wallet with such function.