Lingon 3

"A great utility...its UI is awesome" – Dave Hamilton, Mac Geek Gab & The Mac Observer
Lingon is an easy to use utility that run things automatically on your Mac.
Lingon can start an app, a script or run a command automatically whenever you want it to.

You can schedule it to run at a specific time, regularly or when something special happens.
Lingon can also make sure that an app or a script automatically restarts if it crashes. Lingon can do all this for you and much more.
Please note that Lingon 3 can only create jobs as the current user.