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Krishna
Krishna

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How I Replaced HubSpot ($800/month) With a Free Open-Source Tool Built Using Claude

#opensource #marketing #saas #webdev

If you're a coach, consultant, or solopreneur, you've probably felt the pain of marketing tool pricing.

HubSpot: $800/month
ActiveCampaign: $200/month
ConvertKit: $66/month

For what? Email sequences and a dashboard.

I decided to build my own. And I open-sourced it so you don't have to.

Introducing Claude Coach Kit

A free, self-hosted marketing automation toolkit that does everything the expensive tools do:

📧 Email Automation

  • Multi-step nurture sequences
  • Auto-enrollment for new leads
  • Payment recovery emails
  • Smart stop rules (stops emailing when they pay)

💰 Payment Tracking

  • Razorpay webhook integration
  • Auto-tagging: Lead → Paid → Call Booked → Purchased
  • Revenue attribution per ad campaign

📊 UTM Attribution

  • Server-side visitor tracking (no client-side cookies needed)
  • Cloudflare-powered city detection (free, no API key)
  • Match every payment to the exact ad that drove it

📈 Analytics Dashboard

  • 9-page React dashboard
  • Campaign comparison
  • Email delivery stats
  • Revenue trends

The Cost Comparison

Feature HubSpot ConvertKit Claude Coach Kit
Email sequences ✅ $800/mo ✅ $66/mo ✅ $0
Payment tracking ❌ ❌ ✅ $0
UTM attribution ✅ $800/mo ❌ ✅ $0
Analytics ✅ $800/mo ✅ $66/mo ✅ $0
Self-hosted ❌ ❌ ✅ Yes

How It's Built

Tech stack: React 18 + Supabase (free tier) + TailwindCSS

The entire backend runs on Supabase's free tier:

  • PostgreSQL for data storage
  • Edge Functions for webhooks
  • Row Level Security for access control

Hosting on Netlify/Vercel (also free tier).

Total monthly cost: $0

Quick Start 

git clone https://github.com/krishna-build/claude-coach-kit.git
cd claude-coach-kit
npm install
cp .env.example .env
npm run dev
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That's it. Your marketing automation is running.

Who Is This For?

  • 🧑‍🏫 Coaches running paid programs
  • 💼 Consultants with sales funnels
  • 🚀 Solopreneurs who want to stop paying for basic features
  • 👩‍💻 Developers building tools for clients

Star It on GitHub

⭐ github.com/krishna-build/claude-coach-kit

MIT licensed. Free forever. Built with Claude.

If this saves you money, a star is all I ask. 🙏

Solo entrepreneur from India. Building with AI. Zero coding knowledge. Everything is possible.

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