OnSystem is closed.

It started with an audit of eleven apps that AI coding tools had built, and a list of what went wrong in them. The screens looked almost right, and the almost was the problem. OnSystem turned that list into component kits for internal tools, fintech and e-commerce, and sold them through 2026.

It isn't for sale anymore.

If you have a kit, it still works. Your license key installs from the registry the same way it always did, and the license terms still hold. There won't be new versions. If something breaks, write to hello@onsystem.design and a person will answer.

The audit is still up, and so is the live demo.