Bitwarden works on the same devices as 1Password, so you can use it with any computer, phone, tablet, or browser. But the free version of Bitwarden offers the core features you need in a password manager, including the ability to sync as many passwords as you want across as many devices as you own, support for software two-factor authentication, and sharing between two people with separate logins using a two-person organization. Plus, Bitwarden isn’t as polished overall and lacks the in-app guidance of 1Password, which makes it harder for beginners to get the hang of.
The free version of Bitwarden gets the basics right and doesn’t cost a thing, but it lacks a few features that make 1Password such a standout option, such as password checkups and 1 GB of encrypted storage (all features you can find in Bitwarden’s reasonably priced, $10-per-year premium plan).