Congrats on completing this project and good luck.

Joel Spolsky said (I'm paraphrasing) that everybody only uses 20% of a given program's features, but the problem is that everyone is using a different 20%, so you can't ship an "unbloated" version and expect it to still work for most people.

So it looks like you've built something really cool, but I have to ask what makes you think that the features that are personally important to you are the same features that other potential users need? Since this clearly seems to be something you're trying to create a business out of rather than just a personal hobby project. I'm curious how you went about customer research and market validation for the specific subset of features that you chose to develop?

Have you considered adding an MCP server? I've had good results recently using the Figma one just

I'm interested in modding tools in this space in pursuit of finding weird new ways to create and work with UIs

Not sure why I would pick this over a self-hostable battle-tested option.

Why would I want to use this over figma? The sidepanels and floating toolbar are ripped directly from figma (to the point I would fear a lawsuit). Figma is already a very clean UI, which tries it's best not to shove too many features in your face. Whiteboard, presentations, dev mode are all hidden behind menus. "no plugin support" seems like a very odd thing to flaunt as a feature. Many of the most popular use-cases of figma, such as interactive prototypes, svg creation, html/css exports are all impossible in this tool.

Then, there is the problem of this being maintained by a single person. Components are essential to any serious figma user, good svg and image handling is important (svg is buggy in my testing), selection colors is vital, color palette is important. When can users expect to see these features if the maintainer is busy hunting down bugs?

This is a technically impressive product, but I struggle to see the market plan. I personally hate distractions in software, I go to great lengths to debloat and disable features to make my computer interactions smoother, yet figma is possibly the last program I would want to clean up.

https://www.joelonsoftware.com/2001/03/23/strategy-letter-iv...

A lot of software developers are seduced by the old “80/20” rule. It seems to make a lot of sense: 80% of the people use 20% of the features. So you convince yourself that you only need to implement 20% of the features, and you can still sell 80% as many copies.

Unfortunately, it’s never the same 20%. Everybody uses a different set of features.

I'd be worried about a lawsuit here, primarily due to the overall app architecture and property panel on the right. While there are differences between your implementation and Figma's, it's close enough that things are very clearly Figma-inspired. There've been a lot of Figma copycats, and Figma does have a track record of successful lawsuits against them.

Great work with the backend architecture (a lack of a proper wasm renderer is why penpot will never be competitive), but you're in dangerous territory with the UI.