KeePassX
KeePassX started as a Linux port of KeePass, which was at that time an open-source but Windows-only password manager. Both are now cross platform, with KeePassX using Qt libraries and recent versions of KeePass using.NET / Mono. It is built using version 5 of the Qt toolkit, making it a multi-platform application, which can be run on Linux, Windows, and macOS.
KeePassX uses the KeePass 2 password database format as the native format. It can also import the older KeePass 1 databases.
There is community fork of KeePassX called KeePassXC.
