Buttercup is a free and open source cross-platform password manager that syncs to your own shared storage services
Manage your online identities and credentials with Buttercup: An open-source, free and secure credentials manager. Buttercup uses the strongest industry techniques to encrypt and store your details in a variety of locations of your choosing. Use Dropbox, ownCloud, Nextcloud or a WebDAV connection to remotely host your archive for high accessibility. You can also connect local files when using the Desktop application.
Buttercup's browser extension (Firefox and Chrome) allows you to easily log in to all of your online profiles and sites, is extremely secure, is easy to use and completely free of charge. We collect no data about you or any activities you perform. Keep your master password safe as it is the only way to open your archive and access your credentials.
There are also mobile apps for iOS and Android so it certainly seems to hit all the right notes and could be well worth trying. They have covered using multiple own hosted sharing locations to sync from, desktop, mobile and browsers.
Buttercup for desktop is a beautifully-simple password manager designed to help manage your credentials. Buttercup uses very strong encryption to protect your sensitive details under a single master password - Feel free to use stronger and more complex passwords for each service and let Buttercup ...