I've been working on a pure-JS browser extension for Chrome/Firefox which supports two-way sync with existing 1Password vaults via Dropbox that has the ability

I've been working on a pure-JS browser extension for Chrome/Firefox which supports two-way sync with existing 1Password vaults via Dropbox that has the ability to add and edit items: http://robertknight.github.io/passcards/ http://robertknight.github.io/passcards/ There is no support for folders or tags at the moment in the browser extension, although there is a command-line tool which does have additional editing functionality and works on all platforms that Node JS does.