LessPass
Qtkeychain
Platform-independent Qt API for storing passwords securely. - frankosterfeld/qtkeychain: Platform-independent Qt API for storing passwords securely.
KeePassDX
Passbolt
Passbolt is a free open source password manager for teams. Try our online demo!
Pass - The Standard Unix Password Manager
Pass is the standard unix password manager, a lightweight password manager that uses GPG and Git for Linux, BSD, and Mac OS X.