Open Source Crypto Wallet
Not your keys, not your coins - a wallet is judged entirely by one question: can you prove it isn't quietly shipping your private keys somewhere? Closed wallets ask you to take that on faith. The open source options here expose the key generation, signing, and network code for anyone to inspect, which is the only real basis for trusting software with self-custody of assets that can't be reversed.
Bitcoin Core
Bitcoin node software that downloads and fully validates blocks and transactions on the peer-to-peer network
Electrum
Lightweight Bitcoin wallet with Lightning support and a desktop client you can run locally
Bisq
Decentralized bitcoin exchange for national currencies and other digital assets
BlueWallet
Bitcoin and Lightning wallet with hardware support, multisig vaults, and coin control
Wasabi Wallet
Non-custodial desktop Bitcoin wallet with privacy-focused transactions over Tor
Monero GUI
Desktop wallet for Monero with encrypted wallet files, 25 word seed backup, and private transfers
Sparrow Wallet
Desktop Bitcoin wallet with PSBT support and broad hardware wallet compatibility
Rabby Wallet
Browser-extension wallet for Ethereum and all EVM chains, built for DeFi
Cake Wallet
Noncustodial multi-currency crypto wallet for Monero, Bitcoin, Ethereum, Litecoin, and more