Info-Mac

Download: http://archive.info-mac.org/gui/keep-it-up-x-33.hqx

Keep-It-Up-X version 3.3

Keep-It-Up-X (KIU-X) is designed to keep your Macintosh server up and running.
KIU relaunches applications that crash, it can restart the Mac on a
regular basis and it can monitor free disk space. It also
allows you to remotely manage and monitor your Mac (server) using a
webbrowser.

The primary function of KIU-X is to automatically relaunch applications if
for some reason they stop running (crashes, accidental quits,...).
KIU-X can also restart your Mac on a regular basis to reduce memory
fragmentation.

For remote management purposes, KIU has a tiny and very fast
"embedded" webserver that allows you to remotely perform many
functions such as: restarting the mac; view, kill or restart running
applications; launch applications; run Applescripts; view logfiles
generated by applications ...

KIU-X can send e-mail messages to you, actively alerting you of certain
events such as : free disk space falls below a certain
preset level; an application gets relaunched; KIU restarts the Mac ...

KIU is $22 shareware (Kagi).