TextBar allows you to use scripts to add anything to your menu bar.
Features:
Configure TextBar to run scripts/commands/… and display the results in your menubar
Quickly copy the text to your clipboard
Enable/disable each item individually
Configure how often you want each item to be updated
Configure whether you want to be notified when the text changes
Drag/drop reordering in the Preferences table
What’s new in version 3.5.6
Version 3.5.6:
Licensing fixed.
Signing fixed Note: This build is signed with a new certificate. You may need to manually download 3.5.6 for that and for future updates to work correctly. Please contact me at rs@richsomerfield.com if you have any queries/concerns.
Great App and the developer seems pretty active updating with new features. There are other free solution too so you might want to check http://shellwrangler.com too.