Mozilla-starter is a wrapper both for Mozilla and Firebird. If the browser is running, it uses the -remote flag of Mozilla. Thereby it can open the document in an existing window, a new window or in a new tab. If the browser is not running, mozilla-starter starts it. Mozilla-starter is ideal for opening URLs by applications (e.g. a MUA). Mozilla-starter runs on all POSIX systems Perl and Mozilla run on.