Until 1Password takes the Linux community seriously, KeepassXC is the preferred choice for me.
1Password offer a cloud based solution with only chrome-integration, almost like KeePassXC has for Firefox, Chrome, Vivaldi and Chromium, but Chrome wont be my preferred choice just yet. And also since Cloud solutions has a broader attack vector, there is no need to put the crown jewels on display, when sensitive hacks are almost happening daily on the internet.
If I get a trojan on my active computer, or buy a chinese keyboard, AND have my password database in the cloud, they can login and download it and harvest all my precious passwords without effort and without any fancy cracking efforts. Therefore if you enjoy cloud services, you might consider to use MFA to access the cloud (and hope your 2nd factor device is not pwned too 😉 Remember that SMS might be in clear text through airwaves that anybody might listen to or abuse in other ways.
Keeping an offline password manager is what I feel comfortable with, so that is what my current needs are.
And here, KeePassXC seems to be the best multiplatform solution around. And an important thing to remember is that if you have an offline password manager(or password manager installed in an “air-gapped” VM in Qubes, the risks of breaches are smaller even with bugs in the Password Manager software, since nothing directly enters a VM without network connection. So you need bugs in the underlying OS to get breached. Not impossible, but more rare in hypervisors with an offline vault than a traditional OS without.
Air-gapped VMs are also used as Split-GPG and Bitcoin wallets, so I guess its a bit more secure. Enhance your setup with a copy of your database on a PIN-enabled secure USB and sync it to your vault VM regularly.
P.S. Yubikey supports KeePassXC, but not as traditional 2FA
In Fedora 27 and later a newer and better version of KeePassXC is available. Remember to enable recommended security settings:
sudo yum install keepassxc
– Database settings – encryption – Argon2.
– General – Basic settings – Automatically save after every change.
– lock the database after use (time, immediately, etc)
If you use Qubes, you can have the password manager in the “vault” VM and ctrl-c, ctrl-shift-c in the vaultVM and ctrl-shift-v and ctrl-v in the destination VM to feel safer. You can also have a secure password file in vault and a less secure in another vm with internet access.
If safety is not the biggest issue for you and you use multiple computers, then install firefox addon, dropbox and sync selectively :
In Firefox addon:
yum install dropbox.rpm (otherwise dependencies are left out)
Point your KeePassXC to the synced folder .kdbx file.
Enable 2factor authentication to dropbox to prevent ease of access for bad people.