[jeremya]

How about a recorded screencast or youtube video showing the solution in use? It will not be interactive, but will show some of the interactivity of the solution.

[jakejake]

I would only do that with written permission from the employer. Even if the system didn't have any major technical secrets, you could inadvertently reveal subscriber statistics or some other information that was considered private. And even if you feel that you didn't reveal anything, the employer might still consider it as theft of trade secrets.

If the company has public demo or instructional videos, on the other hand, you could use those.

[user24]

That's a really good idea.

[kasey_junk]

Actually, this is a pretty terrible idea in a lot of contexts. This could easily be interpreted as stealing from your prior employer.

[danielweber]

I almost want to use the "flag" button for people suggesting this, given how colossally bad an idea it is. (But they are posting something on-topic, in earnest, so I don't.)

[GFischer]

I'm not sure about that being legal.

If it's legal, make 100% sure it only has test data.

Still, it's probablly a better alternative to showing code (which is usually owned by the company).

Edit: it apparently isn't legal by looking at the sibling comments :)

It also has the disadvantage of not showcasing the back-end. In my case, most of my work doesn't show on a screen :) .