It recently launched the latest version, 4.0, and you can see more details in https://padloc.app
I've been a happy customer for almost a year and started getting involved in its development for the last 8 months or so.
BrunoBernardino
https://docs.padloc.app/docs/security/ (Whitepaper) https://github.com/padloc/padloc (Source)
For people that is too lazy to scroll and find it.
