free & open source

The password manager
you can actually trust.

Strong encryption, a simple interface, and nothing to pay — ever. Store your credentials in a vault only you control.

Download for desktop View on GitHub
Buttercup

Secure

256-bit AES encrypted vaults that meet today's security standards. Your credentials stay yours.

Simple

Simple

A clean interface built on basic concepts — storing and finding your logins takes seconds, not effort.

Free

Free

Free to download, free to use, forever. No accounts, no subscriptions, no catch.

Download

desktop · mobile · browser
Buttercup for Desktop Windows · Linux

A beautifully simple password manager for your computer. Available now for Windows and Linux — macOS support (Apple Silicon) is planned for a future release.

Download latest release .exe / .AppImage on the GitHub releases page
Buttercup for Browsers in development

Autofill and quick access right in your browser. The extension is being rebuilt — more details soon.

Buttercup for Mobile in development

Carry your vault with you. iOS and Android apps are in active development — watch the GitHub org for progress.