Open terminal via Safari
There are three URL types which can open Terminal from Safari:


ssh
telnet
x-man-page


Those informations can be found under CFBundleURLTypes key in: /Applications/Utilities/Terminal.app/Contents/Info.plist

So in order to open Terminal app, you can place link like:

&lt;a href="telnet://"&gt;telnet&lt;/a&gt;

&lt;a href="ssh://"&gt;ssh&lt;/a&gt;

&lt;a href="x-man-page://"&gt;man page&lt;/a&gt;

It does not prefill informations in Terminal for me.



Bonus:
This rule can be applied to any application that can open URLs.

Check URL types of the app with:

defaults read /absolute/path/to/Info.plist CFBundleURLTypes

for example:

defaults read /Applications/Utilities/Script\ Editor.app/Contents/Info.plist CFBundleURLTypes

This gives me applescript as URL type, so making link like:

&lt;a href="applescript://"&gt;Script Editor&lt;/a&gt;

Opens the Script Editor app.