Software demo tips?

If it can happen, it will happen. Have contingencies just in case. Even a ppt you can through as a last resort.
Talk slowly, maintain eye contact, have fun, make it interesting, use voice inflection...
Let us know how it goes 😀

Have a clear plan for the demo. Remember it's a demo, doesn't me it has to work. It means it has to seem like it works.

The internet will be broken. Just expect it not to work.

If you give a technical demo where you're showing off the sauce code, be sure to have multiple prepared "steps."

Also, make sure your laptop can connect to the projector. I was moments away from starting a presentation, but realized my laptop only had HDMI out, not VGA.

Had myself a few frantic minutes getting setup on a co worker's laptop.

Just remember the Murphy's law.

Demo early, demo often. If you demo once a week (or as often as you can), it stops being this big scary performance with everything riding on it and just becomes a friendly get-together where you get praise and feedback, and they get a sense of security that the project is moving forward.

Practical tip for tomorrow though: get someone else to run through all the steps (you're not allowed to touch the computer while they're doing it). Guaranteed they'll do something that breaks it, and you can then fix it so it doesn't happen in the demo.

Just left my demo it went very well, sold them the software for my price and got a raise

Awesome, congratulations