← Back to blog

Demoing an Open Source Project

August 23, 2026

Open source has an unusual demo problem: the audience is technical, sceptical of marketing, and able to verify every claim by reading the repository.

That rules out most of the usual demo instincts, and leaves a narrower set of things that genuinely help.

What actually helps

  • Showing what it looks like running. A README describes; a demo shows, and for a UI project this is the gap nobody fills.
  • The setup path, honestly — including how many steps it really is.
  • A real use case end to end, rather than a feature list that duplicates the docs.
  • What it does not do, which in open source buys more credibility than any feature.

What reads as marketing

Benefit language, polished stock imagery, and anything that sounds like a landing page for a paid product. This audience reads that as a signal about the project's intentions rather than its quality.

Plain and specific works better than persuasive. "Here is the config, here is what it produces" is the register.

Demos and the commercial half

Most open source projects with a business attached have a boundary — a hosted version, an enterprise tier, a support contract. Being unclear about it is the fastest way to lose a community's goodwill.

A demo can make it clean: show the open version doing its job, and show the hosted one doing what it adds. Two demos, plainly labelled, beats one that quietly demonstrates paid features on an open project's page.

Where it goes

The README, above the installation instructions, is where most of this audience arrives and where a "what does it look like" question is loudest. A link works where an embed cannot render.

Also the docs site, on the page for the feature being demoed rather than in one general tour, since documentation is read by search rather than in order.

Frequently asked questions

Do open source projects benefit from demos?
Yes, particularly UI projects, where a README describes what something does and nothing shows what it looks like running. The setup path and one real end-to-end use case are the two most useful things to include.
What should an open source demo avoid?
Benefit language and anything that reads as a landing page for a paid product. The audience can verify every claim in the source, and marketing register is read as a signal about intentions rather than quality.
How do you demo the paid tier of an open source project?
As a separate, plainly labelled demo. Show the open version doing its job, and the hosted or enterprise version doing what it adds. Quietly demonstrating paid features on the project's own page is the fastest way to lose community goodwill.

Keep reading

This is what Demorta does

Click through it — the same kind of demo you can record of your own product.

Try it on your own product

Record your first interactive demo free.

Five demos on the free plan, forever. No credit card, no trial countdown, no sales call. Install the Chrome extension, click through your product once, and you have a shareable link in about ten minutes.

Start free →