Which ETH non-custodial wallet supports private key import (as opposed to moving funds from the address)?

If I know the address and its private key, I want to be able to add it to my wallet and not transfer funds from that address to some other address (or set of addresses) in the wallet. For example, Exodus has an option of "Move Funds" if you know the private key from the address. But this will move funds from an address (for which you know a private key) to an address inside your wallet. Why would anyone want that? I want to add address-private-key pairs to my wallet, and not incur unnecessary transactions.

Basically, my ideal wallet is: (a) non-custodial, (b) allows to send/receive ETH, (c) open-source, (d) allows me to view, import, and export address/private key pairs.