When comparing Passpack vs bitwarden, the Slant community recommends bitwarden for most people. In the question“What is the best cross-platform password manager?” bitwarden is ranked 2nd while Passpack is ranked 24th. The most important reason people chose bitwarden is:
Bitwarden is open source and can therefore easily be reviewed and checked for security.
Specs
Question Ranking
Pros
Pro Free for up to 100 passwords
After the 100 password threshold is passed, this service costs $1.50 per month for up to 1,000 passwords and 3 users. Plans can be expanded all the way to $40.00 per month with the capability to store 10,000 passwords and share with 1,000 users.
Pro Can create one time passwords
Passpack allows creating passwords for accessing the Passpack Vault that can only be used once. Great for accessing the Vault in public or untrusted places.
Pro Two-factor authentication
Passpack support two-factor authentication via e-mail or Yubikey.
Pro Encrypts user data before it reaches Passpack servers
Users are not at risk of having their passwords known by Passpack staff, as user data is encrypted before it reaches their servers.
Pro Compatible with most common browsers
Passpack is compatible with Chrome, Internet Explorer, Firefox, and Safari.
Pro Username/password combinations can be shared with others
Passpack caters to teams by allowing them to easily share credentials with each other.
Pro Can import usernames and passwords from programs like Excel
For users who have already stored their username and password information in a spreadsheet, Passpack makes it easy to migrate all of the information at once. Additionally, Passpack lets users export their info as well.
Pro Open source
Bitwarden is open source and can therefore easily be reviewed and checked for security.
Pro Cross-platform syncronisation
Automatically synchronises across various devices and platforms. Passwords get fully encrypted locally before leaving the computer.
Pro Free
It is easy to start as the majority of features are on the free version.
Pro Many browser plugins
There are plugins for Firefox, Chrome, Opera, Edge, Vivaldi and Tor Browser.
Pro Clean interface with no ads
Pro Extremely strong encryption algorithm
End-to-end AES-256 bit encryption, salted hashing, and PBKDF2 SHA-256.
Pro Strong, easy to use built-in password genarator
No need to think of individual passwords. This can be easily accomplished with an easy to use built-in password manager.
Pro Native mobile apps for iOS and Android
Pro Two-step authentication
Offers 2FA with Authy, Google Authenticator or via email.
Additionally, the Pro Version has Duo Security with Duo Push, SMS, phone call, and U2F security keys: YubiKey (any 4 series device or YubiKey NEO) and FIDO U2F (any FIDO U2F certified key).
Pro Multifactor authentication
Pro Auto-fill remembers last user
When a site has multiple credentials (like I have for some brokers and banks), then the most recently used is automatically populated (if auto-fill is opted). This feature is unique (to my knowledge) and spectacular (especially for sites that log you off frequently and re-logging in is required).
Cons
Con Clunky UI and sign up process
Con Lacks password auditing
Con Lacks native mobile apps
Con Does not support Opera
Con 2FA generator for stored logins restricted to premium
The 2FA code generator is only available with a premium membership, meaning you will need to use a different app (like Authy or Google Authenticator).