Build your own workflow SaaS for one industry with a free, open-source stack
A small SaaS that fixes one painful workflow for one industry, assembled from open-source parts and finished by an AI coding agent.
Most fast AI SaaS launches are not new technology. They take one painful job in one industry and automate it end to end.
The stack
- n8n ↗Runs the workflows and connects to the tools the industry already usesSustainable Use License (fair-code)
- Supabase ↗Database, logins and file storageApache 2.0
- Claude ↗Does the heavy lifting as the coding agentPaid API
How to build it
- 1Pick one industry and the workflow its owners complain about most.
- 2Model the data in Supabase and the steps in n8n.
- 3Let Claude write the app around it.
- 4Onboard five businesses by hand before you automate onboarding.
- 5Charge every business monthly.
200 businesses at $79 a month is $15,800 a month.
- Accounting firms
- Logistics
- Property management
- Recruiting agencies
- Construction
- AI image generator API →
- Qwen-Imagefree
- Claudepaid
- A rented cloud GPUpaid
- Private ChatGPT for companies →
- LibreChatfree
- Claudepaid
- MCP connectorsfree
- AI employee for one niche →
- Claudepaid
- OpenClawfree
- Lightpandafree
Common
questions.
Straight answers. If yours isn't here, ask on a 20-minute call.
What is this list?+
Every week our reels break down an AI product a real company is making money with, and the free, open-source stack you could build your own version on. This page keeps all of them in one place, newest first, with the tools, the licences, the money maths and the reel.
Is the stack really free?+
The software is. Every tool listed is open source or fair-code, and the licence is shown next to it so you can check commercial use. You still pay for hosting, GPUs and the AI model's API, which for most of these products is a few hundred dollars a month at launch.
Which licences allow commercial use?+
MIT and Apache 2.0 allow commercial use with attribution. AGPL-3.0 does too, but if you change the code and offer it as a service you must publish your changes. Fair-code licences such as n8n's Sustainable Use License allow internal and client use but restrict reselling the tool itself, so read them before you build on them.
Can Axionry build one of these for me?+
Yes. We build AI products on open-source stacks with $0 upfront: each checkpoint is invoiced only after you have seen it working. Book a 20-minute call and bring the niche you want to sell to.
Want your own workflow SaaS for one industry built for your niche?
Twenty minutes, straight to the engineer. No sales rep, no deck.