I'm a long-time Protonmail user, but I've never used any login or password manager prior to this. Proton Pass is a godsend: Open-source audited code, secure end-to-end encrypted service, great functionality (with more added as time goes on) - and all from a highly trusted developer. Proton Pass is also free, which is possible due to paying users - just like the rest of the Proton ecosystem.

I also really like their alias creation system, and works brilliantly with my Protonmail.

I believe in Proton and their mission statement: "a better internet starts with privacy and freedom." Their products, including free Proton Pass, is a testament to this. Proton Pass + Firefox is a match made in heaven.