Email : Skiff Privacy-first end-to-end encrypted email. End-to-end encrypted email, calendar, documents, and files that give you the power to communicate freely.
Sparrow Bitcoin Wallet Sparrow is a Bitcoin wallet for those who value financial self sovereignty. Sparrow’s emphasis is on security, privacy and usability. Sparrow does not hide information from you - on the contrary it attempts to provide as much detail as possible about your transactions and UTXOs, but in a way that is manageable and usable.
Bitcoin Wallet : SeedSigner https://seedsigner.com/ You can build an offline, air-gapped Bitcoin transaction signing device from off-the-shelf components for less than $50!
CryptoWallet : AirGap Self custody made simple and secure. Protect your crypto and store your private keys offline. Turn a spare phone into a Cold Wallet.