Regarding the recent Proton Wallet, I respect their conscious effort to be transparent and open about the tradeoffs / threat model (especially in their recent blog posts; see below).
I just tested out the wallet, great work.
Though not perfect ATM, they seem to be on a good path so far in building a Bitcoin-only wallet to simplify sending and receiving Bitcoin for their 100 million Proton users.
Presently, they appear to use the Bitcoin Dev Kit (BDK; see below) as a dependency, with coinjoin and the Lightning Dev Kit (LDK) on their radar. Hopefully, we will see silent payments integrated down the line, too.
Nevertheless, as a Proton user, I look forward to seeing how the Proton Wallet evolves 🔥
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More Reading 📌
- Initial announcement: https://proton.me/blog/proton-wallet-launch
- The wallet's security model: https://proton.me/blog/proton-wallet-security-model
- Github repo: https://github.com/ProtonWallet/andromeda
- Potential future dependencies: https://github.com/ProtonWallet/andromeda/commit/211dc5a86f20455cdba99e0a51a37a61ef70577c