When comparing passbolt vs LessPass, the Slant community recommends passbolt for most people. In the question“What are the easiest to use password managers?” passbolt is ranked 7th while LessPass is ranked 10th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Security model
Pro Open source
Pro Self-hosted
Pro Open source
Pro Really platform-free
Works everywhere, in any device that can run javascript.
Pro Doesn't store passwords
If it's not stored, it can't be stolen.
Cons
Con In alpha
Con Deterministic
Deterministic password managers have many drawbacks.
Con Cannot store existing secrets
Existing secrets (aka passwords) cannot be stored with deterministic password managers. In order to use LessPass effectively, you will need to change your password on every site.
Con Easily cracked with exposed/compromised master password
Since anyone can use LessPass with the same parameters as you, all they need is your master password (which could be obtained through keylogging or numerous other methods) to gain access to every one of your site passwords.