Stwlth Software is a founder-led studio in Illinois. We build websites, software and brands, and run the media systems behind them, for businesses wherever they are. The person who designs it is the person who builds it, from the first call.
Most projects start with something that works and a stack of tools that barely does: a brand that has outgrown its logo, a business run on spreadsheets, a content team exporting by hand. We replace the stack with one quiet system, then keep it running.
Every form and booking link gets a test message before launch, and you watch it land in your inbox.
The system your business actually runs on, built around the way it actually runs, not the way a vendor assumed.
Identity that survives contact with a real product: type, voice, and a system your team can actually use.
From camera card to every channel without the Tuesday spent exporting. Transcribed, cut, captioned, shipped.
The Glass Engine: named workflows that do the boring work inside the tools you already use. Not taking new installs right now; join the list.
Built, shipped, and running on this site today. Every system below is live and can be checked. Client work joins the list only with the client's permission.
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22 financial simulators: installable, working offline, no bank linking. First commit to production in 116 days, with accounts, payments, and automated tests on every change.
22 financial simulators: installable, working offline, no bank linking. First commit to production in 116 days, with accounts, payments, and automated tests on every change.
An assistant that reads the numbers on screen and explains the math behind them, answered from the product's own methodology docs. One API streams answers from Claude, OpenAI, or Gemini; daily limits, answer caching, and bring-your-own-key keep the cost predictable. It explains. It never tells you what to buy.
An inquiry from this site lands in a database, not an inbox. One click turns it into a client project, and the client signs in to see its status, the next step, and every update, matched to their verified email, with nothing to install.
A demo on fake vendor bills: a model reads each PDF and quotes where it found every value, fixed rules check the math, the vendor and the PO, and anything off waits for a person instead of posting. Approved bills become accounting rows, a signed webhook and a readable log.
Bring the launch date, the spreadsheet, or the brand that no longer fits. In one working session we map what should exist and say plainly what shouldn't. Sometimes the answer is buy it, not build it.
No handoff to a team you haven't met. The founder who scopes the project designs it and builds it, and a working version arrives early. You use it while we finish it.
Code, files, accounts, domains and models are in your name from the first day, documented so any competent team could take over. No one should ever have to call us.
Every fix and every change is logged in your portal, so you can see what the monthly fee bought. Most months you won't need us. When a tool changes and something breaks, we fix it.
Two or three sentences is plenty: the launch, the system, the thing still done by hand. You'll hear back from the founder, not a sequence.