History Janitor is a handy Firefox add-on that will automatically purge your browsing history after a specified time.
Since Firefox does not provide any option to remove your oldest browsing history, History Janitor offers this solution.
History Janitor is cross-platform and it works on Mac OS X, Windows and Linux.
Requirements:
· Firefox 13.0 and later or
· SeaMonkey 2.0a1 and later
What's New in This Release: [ read full changelog ]
· Seamonkey support added with this version.
· Removed a simple dump.