Build your own AI support chatbot for one niche with a free, open-source stack
A chatbot trained on a business's own documents that answers customers on their website and hands hard questions to a person.
Chatbase started as one founder's 2-week MVP. It now does $10M+ in annual recurring revenue with 8,000+ paying customers and never took VC money.
The stack
- AnythingLLM ↗Turns documents into a searchable knowledge base with a chat on topMIT
- Claude ↗The brain: reasons, plans, writes the code and talks to usersPaid API
How to build it
- 1Load the business's FAQs, policies and product pages into AnythingLLM.
- 2Use Claude to answer, and to say so when it does not know.
- 3Put the chat widget on their website and WhatsApp.
- 4Send unanswered questions to a person and learn from them.
- 5Sell it to one niche with templates made for that niche.
300 businesses at $49 a month is $14,700 a month.
- Clinics
- Law firms
- Hotels
- Online stores
- Schools
- 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 AI support chatbot for one niche built for your niche?
Twenty minutes, straight to the engineer. No sales rep, no deck.