Bitcoin Core is described as 'open source project which maintains and releases Bitcoin client software called “Bitcoin Core”' and is a Crypto Wallet in the Bitcoin & Cryptocurrency category. There are four alternatives to Bitcoin Core for a variety of platforms, including Android, Mac, Windows, iPhone and Linux. The best alternative is Electrum, which is both free and Open Source. Other great apps like Bitcoin Core are BlueWallet (Free, Open Source), Blockstream Green (Free, Open Source) and Bitcoin Knots (Free, Open Source).
Electrum is an easy to use Bitcoin client. It protects you from losing coins in a backup mistake or computer failure, because your wallet can be recovered from a secret phrase that you can write on paper or learn by heart.
A Bitcoin wallet that allows you to store, send Bitcoin, receive Bitcoin and buy Bitcoin with focus on security and simplicity. On BlueWallet, a bitcoin wallet you own you private keys. A Bitcoin wallet made by Bitcoin users for the community.