Walleth is a centralized, HD wallet, developed by the ethereum core developer, Ligi.
Walleth offers basic functions of a wallet like sending and receiving funds. However, if you are a user that is only comfortable with manually entering public addresses, don't bother to use walleth since it only support the use QR codes.
The wallet is meant for holding tokens from ethereum network but not all. For instance while it can hold erc-20, it doesn't hold erc-721.
I see this wallet too ordinary. It doesn't offer basic functionalities of a wallet.