When comparing onlykey vs Acebit Password Depot, the Slant community recommends Acebit Password Depot for most people. In the question“What are the best offline password managers?” Acebit Password Depot is ranked 22nd while onlykey is ranked 27th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Completely offline (separate hardware)
Pro Stores 2FA
FIDO U2F, Google Auth TOTP, Yubikey OTP.
Pro Can be used for secure messages with Keybase PGP
Pro Open Source
Pro Easy and intutive to use
Pro Password Depot will create passwords for you
You are offered various options - number of characters, upper or lower case, numbers, punctuation characters, and even excluding similar looking characters while also giving you an estimate of the time to crack the password.
Pro Free iOS version available
There is an iOS app. This can use the same files as the Windows version (PSWD). The files are stored locally on the iOS device.
Cons
Con You must remember to SAVE any changes
If you frequently create passwords for new web sites, you might find it's not there because you forgot to save it. This behavior was specifically designed into the Password Depot, but it can still feel frustrating nonetheless.