Electrum is a free and open source Bitcoin wallet software that was released in 2011. It is a lightweight client which means it doesn’t require the user to download the full blockchain to use the wallet. It is available as a desktop application for Windows, Mac, and Linux operating systems, as well as an Android app and a web interface. Electrum offers users a wide range of features, including secure storage of private keys, support for multiple currencies, integration with hardware wallets, and encrypting private keys with a password. It also offers users the ability to make transactions quickly, as well as back up the wallet and restore it from a seed phrase. Furthermore, Electrum supports a wide range of altcoins, including Litecoin, Dogecoin, and Dash.
It is a web service for exchanging alt coins.
It is a Bitcoin service not a wallet.
all your coin bases are our property, no chance of survival makes your time.
It is a peer-to-peer trading site, not a wallet.
Coinbase is not a Bitcoin wallet, it is a Bitcoin service that holds your money. You do not own bitcoin if you do not have the private keys.