Technology

Don't combine email, password manager, or 2FA authenticator together with the same company. All 3 should be completely separate from each other.

Bitwarden has a distinct advantage for this reason alone.

I subscribe to both services, and each has its own unique advantages. Proton's ability to generate disposable email addresses for questionable or bothersome websites is a standout feature that makes it worth the investment. Additionally, Bitwarden's thorough third-party audit instills confidence, and its excellent autofill functionality coupled with the option to self-host data is highly appealing. Moreover, the ability to unlock your vault using a YubiKey adds an extra layer of security to Bitwarden. While Proton shows promise and has great potential.

Been a longtime user of Bitwarden (free, and over the last year paid). It's a straightforward/good but a bit boring UI, connects very well and easily into browser, phone etc. Works well, highly recommended, and having 2FA on paid version is awesome.

Been trying out Proton Pass for the last few days since I already pay for Proton Unlimited. It's got a good UI and so far it's been working well in Firefox and on my phone. It's much better integration with Simple Login features so I like the slightly more seemless sign-up ability. It's not 100% feature parity with Bitwarden paid though.

Bottom line - I prefer proton pass as a heavy proton user already BUT if I just wanted a standalone password manager, Bitwarden is probably better. Both are good options though, and competition is good.

Both are open source. I will use the free version. Proton pass seems to have a UI more polish.