When comparing Keeper vs KeeWeb, the Slant community recommends KeeWeb for most people. In the question“What are the best offline password managers?” KeeWeb is ranked 7th while Keeper is ranked 11th. The most important reason people chose KeeWeb is:
KeePass 2.x *.kdbx password-databases (provided they are encrypted by AES-256 with AES key-derivation) are compatible with KeeWeb.
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Pros
Pro Offline support
The vault supports offline access on all platforms.
Pro BreachWatch
Know if your usernames and passwords are on the Dark Web, without divulging your users names and passwords. Keeper has a proprietary method of keeping your data zero knowledge (only you know it) while verifying if it exists to malicious users.
Pro Available on all major platforms, OS & browser extensions
Keeper is available for download on Android, iOS, Windows, Mac, Windows Phone, Linux, Kindle, and Nook, and available as a browser extension for IE, Chrome, Firefox, Safari and Opera.
Pro Multiple certifications & security compliance
Keeper is a password manager that is certified and is security compliant with HITECH and HIPAA, SOC-2, TRUSTe, McAfee Secure, ES-EU Safe Harbor, PCI-DSS & U.S. Department of Commerce's Bureau of Industry and Security.
Pro Import from less secure solutions
Keeper supports importing from a myriad of other solutions.
Pro Cloud Sync and Backup
Your Keeper Vault is always backed up.
Pro Availability
Keeper has amazing up time.
Pro Easy onboarding of new users
6 different options to onboard new users:
Manual
CSV
Active Directory
SSO IdP
SCIM
CLI
Pro Enterpirses can integrate with SSO
Boost your companies ability to extend sign into sites and applications that don't support SSO. Keeper will integrate as a Service Provider (SP) to your Identity Provider (IdP).
Pro Drag and Drop and Sub Folder Support
Take control of your vault with the ability to nest folder and records and organize it your way.
Pro Multiple 2FA options including FIDO U2F
Keeper supports TOTP, Text, U2F, RSA, and Duo 2FA's.
Pro Support
Support is second to none.
Pro Strong access control and sharing
Very strong access control in the business version
Pro Multiple Views
Folder, Grid, and Record views supported with multiple sorting options.
Pro Its password databases are compatible with those of KeePass 2.x
KeePass 2.x *.kdbx password-databases (provided they are encrypted by AES-256 with AES key-derivation) are compatible with KeeWeb.
Pro Available as an online or offline app
There are Windows, Linux and Mac OSX offline apps.
Pro Supports WebDAV, Google Drive and OneDrive
Pro Syncs with Dropbox
Pro Supports 2FA
And it's Google Authentication compatible.
Cons
Con only subscription
No lifetime licence purchase possible
Con BreachWatch is not Free
BreachWatch, which is an amazing feature is not free. It is a paid upgrade.
Con Limited options in free version
Keeper is not the least expensive, but certainly not the most either. Good value for the features and support.
Con Been hacked several times.
Here are past vulnerabilities:
https://team-sik.org/trent_portfolio/password-manager-apps/
Con Requires a slight amount of set up and configuration
Keeper does a good job of walking you through the process of getting setup, but if you are not very technical it could be confusing.