Open source demo projects
Every project in the registry tagged demo, ranked by real GitHub adoption.
A Low-Code MCP Framework for Building Complex and Innovative RAG Pipelines
Kaetram is an open-source 2D HTML5 MMORPG. It is an extended version of BrowserQuest (BQ).
Angular QR code, Barcode, DataMatrix, scanner component using ZXing.
Frequently asked questions
How many open source demo projects are there?
This registry tracks 3 projects tagged demo, with 7,122 GitHub stars between them. The most-adopted is UltraRAG at 5,715 stars.
Are these demo projects free to use?
Yes — 3 of the 3 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which demo project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these demo projects still maintained?
2 of the 3 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.