Whitechain does not have any specific plugin, so you can use any EVM-compatible wallet.
For daily signing, you can use MetaMask, Rabby, or Renown. Also, you can use Safe for multisig treasury and admin operations.
FAQ
Should I use a multisig?
For treasury and admin operations, yes. We recommend using Safe, where a transaction executes only after a set number of signers approve it (for example, 2 of 3), so no single key can move funds or change an owned contract alone. Each signer connects with their own wallet to review and sign.