Other or multi-platform

• http://passwordsafe.sourceforge.net/relatedprojects.shtml
• https://itunes.apple.com/us/app/pwsafe-password-safe/id520993579
• https://github.com/zdia/gorilla/wiki
• https://agilebits.com/onepassword

Mac-specific info

Ebook, "Take Control of Passwords in Mac OS X, Second Edition"

• http://www.takecontrolbooks.com/passwords-macosx

Windows platform

• http://passwordsafe.sourceforge.net