Agencies charge $1K to $6K to set up each of these agents, plus a monthly fee to keep it running. The code is free on GitHub. What you still pay for is what it runs on: AI keys, a phone number for the voice agent, and a GPU for the clone. Start with Harvey or ChatbotX. They're the fastest to get running.
The five at a glance
| Agent | What it does | Repo | What it needs |
|---|---|---|---|
| Voice agent | Answers the phone and books meetings, 24/7 | Dograh | AI keys and a Twilio or Telnyx number |
| Appointment setter | Turns Instagram DMs into calls on the calendar | ChatbotX | An AI key and a Meta app |
| Lead-gen agent | Finds local businesses and writes the cold emails | Harvey | Python 3.11+ and your Claude or ChatGPT plan |
| AI clone | Makes daily videos of you without a camera | Duix-Avatar | Windows or Ubuntu with an NVIDIA GPU |
| Product ad maker | Turns one product photo into a short commercial | OpenMontage | Claude Code and a video-model key or a GPU |
1Voice agent with Dograh
Dograh is an open-source voice AI platform, a self-hosted alternative to Vapi and Retell. It answers the phone and books meetings around the clock.
- Code: github.com/dograh-hq/dograh
- Run it: one Docker command. The README has it.
- For real calls: your own AI keys and a phone number from Twilio or Telnyx.
- License: BSD-2-Clause, so you can use it for client work.
2Appointment setter with ChatbotX
ChatbotX is an open-source ManyChat alternative built for AI. It turns Instagram DMs into calls booked on your calendar, and it also covers WhatsApp.
- Code: github.com/ChatbotXIO/ChatbotX
- Easiest install: the Docker Compose repo, github.com/ChatbotXIO/chatbotx-docker-compose
- It needs: an AI key, and a Meta app to connect Instagram or WhatsApp.
3Lead-gen agent with Harvey
Harvey finds local businesses and writes a personalized cold email for each one. You approve every email before it goes out.
- Code: github.com/ethanplusai/harvey
- It needs: Python 3.11 or newer. It runs on your Claude or ChatGPT plan.
- Approval: every email waits for your OK by default. Keep it that way.
- License: MIT.
4AI clone with Duix-Avatar
Duix-Avatar is an open-source alternative to HeyGen. It makes daily videos of you without you standing in front of a camera, and it runs offline.
- Code: github.com/duixcom/Duix-Avatar
- It needs: Windows or Ubuntu with an NVIDIA GPU.
- License: free for products under 1,000 monthly users. Read the license before you use it for a client.
5Product ad maker with OpenMontage
OpenMontage is an open-source video production system that runs inside Claude Code. Give it one product photo and it makes a short commercial.
- Code: github.com/calesthio/OpenMontage
- It needs: Claude Code, plus a video-model key (FAL, for example) or a local GPU.
- License: AGPL. If you change the code and offer it to others as a service, you have to share your changes.
6Pick your first one
Start with Harvey or ChatbotX. They're the fastest to get running and the easiest to sell, because a booked call or a reply from a lead is a result a business owner understands on day one.