Perhaps one of the oldest players in the Bitcoin wallet market is Electrum. Created in November 2011 by Thomas Voegtlin it has since been modified by various developers (the code is open source). Electrum is a client based wallet – meaning it’s software you download and run from your computer. It’s only available for desktop computers at the moment and you can download it here.
Electrum prides itself on the following benefits:
Fast – the client does not download the blockchain, it requests that information from a server. No delays, always up-to-date.
Safe – Your private keys are encrypted and never leave your computer. Your wallet can be recovered from a secret phrase. You can also keep your private keys offline, and go online with a watching-only wallet.
Private – Your private keys are not shared with the server. You do not have to trust the server with your money. Your private keys are encrypted and never leave your computer. The server does not store user accounts. You are not tied to a particular server, and the server does not need to know you.
Also another great benefit of Electrum is that it can be used with TREZOR or Ledger so you can send Bitcoins from your cold storage device as well.