Company Electric Pocket created these great apps:
MailTones - Pager Alerts for Email and Gmail, BugMe! Stickies, BugMe! Stickies - Ink Notepad with Alarms & Reminders, Nag : Multiple Timers with Alarms, Nag, Nag : Reminder Alarm, PushAlerts - Pager Style Alerts for Email, HEAT3D, and others..
