An alternative to the dearly departed Caffeine, this menu bar app overrides energy saver settings to keep your Mac awake. This one has a boat load of features and is being actively developed.
Put pretty much anything you want in your Mac’s menu bar, using extensible plug-ins — plenty of which have already been created.
A simple menu bar clock replacement with a simple calendar for your Mac. Installed on all Macs at thriftmac headquarters.
Simple and effective way to hide the icons cluttering your menu bar. Decide which ones you want to hide, then use an arrow icon to reveal them when needed. They’ll hide themselves again after a time that you set.
Automatically hides application windows that have been inactive for a certain period of time (you decide how long), leaving only the apps you’re using visible. Keeps your screens clutter free and your mind focused.
Easy access from the menu bar to a calendar for the current month and a listing of appointments and events imported from the Calendar app that comes with your Mac. Unpinning allows you to move it around the screen.
Keeping You Awake
A coffee cup icon that keeps your Mac awake when you click it. You can also set the duration. Great if you miss the now-defunct Caffeine, and don’t like Amphetamine’s pill icon.
List all mounted volumes in your menubar, categorized by type. Clicking on a volume menu will unmount/eject that volume. Supports Growl unmount and mount notifications.
Use the normal Mac keyboard combinations for creating screenshots, and get the added option of sharing and markup in a little popup window.
Hide menu bar icons on your Mac. Just click on the arrow.
Add one or more menus to the menu bar for accessing files and data. Pre-set menus include Applications, Developer, Home, Documents and Snippets. Or define your own. (Not a system hack.)