Pro Client-side encryption for files stored in the cloud
No accounts, no registration, no backdoors. User just needs a password to create an encrypted folder for their files and a keyfile. When the password is entered, the decrypted folder opens in the browser like in a kind of virtual hard drive (a WebDav folder), user puts their files in that folder and Cryptomator encrypts them automatically. Then the folder should be synced to a cloud service of user's choice, and later can be opened and decrypted from anywhere, using a browser.