Time Machine - Time Machine is the breakthrough automatic backup that’s built right into Mac OS X.
Lightning Calendar - Organize your life — it’s about time!
rsync - rsync is a file transfer program for Unix systems. rsync uses the "rsync algorithm" which provides a very fast method for bringing remote files into sync.
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
CrashPlan - CrashPlan for Small Business backup software offers the best way to back up and store business & enterprise data securely - offsite, onsite & online in the Cloud.
Calendar Lock PEA - Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.