LaunchControl is a fully-featured launchd GUI allowing you to create, manage and debug system- and user services on your Mac.
Startup Delayer - Startup Delayer gives you the power to optimize your Startup Process by delaying applications from starting up as soon as you log into your computer. By delaying the applications during start up, your computer becomes usable a lot faster.
Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.
Lingon - [The Lingon open-source project on SourceForge.net (...
Gnome Clocks - Clock application designed for GNOME 3
Autoruns - See what programs are configured to startup automatically when your system boots and you login.
AlarmDJ - Online Alarm Clock - Use YouTube videos or MP3 files as alarm sound. Works offline.