DEV Community: Krishna

I Built a HubSpot Alternative in 3 Months Using Only AI — Here's the Full Stack

Krishna — Tue, 17 Mar 2026 10:21:55 +0000

HubSpot charges $800/month. I built the same thing for $0.

No coding knowledge. No team. Just me and AI.

The Full Stack (All Free)

Layer	Tool	Cost
Frontend	React 18 + Vite	$0
Database	Supabase (free tier)	$0
Styling	TailwindCSS	$0
Email	Resend (100/day free)	$0
Payments	Razorpay	$0
Hosting	Netlify (free tier)	$0
Total		$0/month

What It Does

Email Automation

Multi-step nurture sequences. Auto-enrollment. Smart stop on conversion. Payment recovery.

CRM

Contact management. Tags. Lifecycle tracking. Google Sheet sync.

Attribution

UTM tracking. Payment-to-ad matching. Campaign analytics. City detection via Cloudflare.

Dashboard

9 pages. Revenue tracking. Email stats. Campaign comparison.

The AI Part

Every line of code was written through conversations with AI. I described features in plain English. AI built them. I tested. We iterated.

78 files. 20+ pages. 3 months. Zero coding knowledge.

It's All Open Source

⭐ Claude Coach Kit — The full marketing automation platform

⭐ Marketing Prompts — 500+ prompts

⭐ Golden Content Vault — 1000+ templates

MIT licensed. Free forever. Star if it helps.

Solo entrepreneur from India. Zero code. 100% AI-built.

57 Tweet Templates That Actually Go Viral (Open-Source Collection)

Krishna — Tue, 17 Mar 2026 10:13:17 +0000

After studying 1000+ viral tweets, I distilled them into 57 copy-paste templates.

Engagement Templates

"If you are a [niche] who wants to [goal], read this:"
"The difference between [level A] and [level B] is [insight]."
"[Topic] tip that took me [X years] to learn: [tip]"
"Here is the [topic] advice no one gives you: [advice]"
"I studied [X] successful [people]. They all do [thing]."

Authority Templates

"After [X years] in [industry], here is what actually matters:"
"I have helped [X] clients [achieve result]. The pattern is always the same:"
"My client went from [before] to [after] in [time]. Here is what we did:"

Story Templates

"[X years] ago, I was [situation]. Today [current state]. Here is what changed:"
"The worst day of my [career/business] taught me the best lesson:"

Get All 57

Plus 1000+ more content templates, hooks, and thread formats:

⭐ Golden Content Vault

Also:

Marketing Prompts — 500+ prompts
Claude Coach Kit — Marketing automation

All free. MIT licensed.

How to Build a Complete Email Automation System for Free (React + Supabase)

Krishna — Tue, 17 Mar 2026 10:12:43 +0000

Want to build your own email automation without paying $200/month?

Here is the complete stack — all free:

Architecture

New lead → Supabase DB → Cron checks → Resend API sends email → Track opens/clicks

What You Need

Supabase (free tier — database + edge functions)
Resend (100 emails/day free)
React + Vite (frontend dashboard)
Cron job (any scheduler)

The Flow

Lead enters your system (form, payment, Google Sheet)
Cron job checks for new unenrolled leads
Enrolls them in a multi-step sequence
Sends emails at scheduled intervals (Day 0, Day 2, Day 5)
Tracks opens and clicks
Auto-stops when they convert

Get the Full Code

I open-sourced the entire system:

⭐ Claude Coach Kit

Includes email sequences, payment tracking, UTM attribution, and a 9-page dashboard.

MIT licensed. Free forever.

Indian Solopreneurs: Stop Paying ₹40,000/Month for Marketing Tools

Krishna — Mon, 16 Mar 2026 19:53:53 +0000

If you are a coach, consultant, or solopreneur in India, you are probably paying ₹15,000-40,000 per month for marketing tools.

HubSpot: ₹65,000/month
ActiveCampaign: ₹16,000/month
ConvertKit: ₹5,000/month
Mailchimp: ₹3,500/month

I built free alternatives and open-sourced them.

1. Claude Coach Kit

Complete marketing automation — email sequences, Razorpay payment tracking, UTM attribution, analytics dashboard.

Cost: ₹0/month

⭐ GitHub

2. Marketing Prompts

500+ curated marketing prompts — email, social media, ads, sales copy.

⭐ GitHub

3. Golden Content Vault

1000+ content templates — tweet formulas, LinkedIn hooks, thread templates.

⭐ GitHub

All built by a solo Indian entrepreneur using AI. All MIT licensed. All free forever.

🇮🇳 Made in India, for the world.

Open Source Alternatives to Expensive Marketing Tools (2026 Edition)

Krishna — Mon, 16 Mar 2026 19:52:40 +0000

Tired of paying hundreds per month for marketing tools? Here are free open-source alternatives:

Email Marketing

❌ ActiveCampaign: $200/month
✅ Claude Coach Kit: $0/month — GitHub

Multi-step nurture sequences
Auto-enrollment
Payment recovery emails
Works with any SMTP or Resend API

Marketing Prompts

❌ Jasper AI: $49/month
✅ Marketing Prompts Collection: Free — GitHub

500+ curated prompts
Email, social media, ads, sales copy
Works with any AI tool

Content Templates

❌ Copy.ai: $36/month
✅ Golden Content Vault: Free — GitHub

1000+ templates
Twitter hooks, LinkedIn posts, thread templates
57 proven tweet formulas

UTM Attribution

❌ HubSpot: $800/month
✅ Claude Coach Kit: $0/month

Server-side visitor tracking
Payment-to-ad matching
Campaign analytics

The Bottom Line

You can run a complete marketing stack for $0/month using open-source tools.

⭐ Star these repos if they help you!

Built by a non-coder from India using AI.

Free CRM for Coaches: Build Your Own with React + Supabase (Open Source)

Krishna — Mon, 16 Mar 2026 19:45:16 +0000

Tired of paying for CRMs that do too much and charge too much?

I built a free, open-source CRM specifically for coaches and consultants.

Features

Contact management with tags and lifecycle tracking
Email automation sequences
Payment integration (Razorpay)
UTM attribution (know which ad = which client)
Google Sheet import/export
Analytics dashboard

Stack

React 18 + Vite
Supabase (PostgreSQL + Edge Functions)
TailwindCSS
Recharts for analytics

Why I Built This

I'm a marketing consultant who was paying $500/month for tools. Built my own, now sharing it free.

⭐ GitHub: Claude Coach Kit

Also check: Marketing Prompts — 500+ free prompts

MIT licensed. Self-hosted. Your data stays yours.

1000+ Free Content Templates for Twitter, LinkedIn & Instagram (Open-Source Vault)

Krishna — Mon, 16 Mar 2026 10:01:33 +0000

Need content ideas? I've been creating content for 5 years. Here's my entire template vault — free.

Thread Templates

Advice & Frameworks
How-To step-by-step guides
Lessons & Mistakes
Story threads (26 templates)
Breakdowns

57 Tweet Formulas

Engagement hooks
Authority builders
Story openers
Viral formats

10 Hook Frameworks

The Contradiction: "Everyone says X. They're wrong."
The Number: "X things that changed everything"
The Story: "3 years ago I was broke. Today..."
The Question: "What if success was simpler than you think?"
The Authority: "After X years, here's what matters"

...and 5 more in the vault.

Get It All

⭐ Golden Content Vault
⭐ Marketing Prompts
⭐ Claude Coach Kit

All free. All MIT licensed.

I'm Open-Sourcing My Golden Content Vault — 1000+ Templates, Hooks & Threads (5 Years of Content Creation)

Krishna — Mon, 16 Mar 2026 08:22:38 +0000

For 5 years I've been saving every hook that stopped the scroll, every thread that went viral, every template that converted.

Today I'm releasing the entire vault.

What's Inside

🧵 Thread Templates

Advice & Frameworks threads
How-To step-by-step guides
Lessons & Mistakes formats
Story thread structures
26 complete story templates
Breakdown/analysis templates

🐦 Tweet Templates

57 proven tweet formulas
Health & Fitness niche
Work & Business growth
Writing & Marketing
Personal Development
Systems & Productivity

🪝 Hook Frameworks

The 10 Hook Frameworks that always work
Contradiction, Number, Story, Question, Authority hooks
Warning, Secret, Results, Controversial, Curiosity Gap hooks

Why Free?

Because gatekeeping content knowledge behind $997 courses is outdated.

⭐ GitHub: github.com/krishna-build/golden-content-vault

Also check out:

Claude Coach Kit — Free marketing automation
Marketing Prompts — 500+ marketing prompts

5 years of content creation. All yours. MIT licensed.

The Non-Coder's Guide to Building a SaaS with AI (My Journey from Zero to Production)

Krishna — Mon, 16 Mar 2026 08:10:10 +0000

6 months ago, I couldn't write a single line of code. Today I have a production SaaS serving paying clients.

Here's exactly how I did it — and how you can too.

My Background

Marketing professional from India
Zero coding knowledge
Needed marketing automation tools
Couldn't afford $500/month for HubSpot

The AI Approach

Instead of learning to code (which would take years), I used AI as my developer:

Described what I needed in plain English
AI wrote the code — React components, database schemas, API endpoints
I tested it — clicked around, found bugs
We iterated — fixed bugs, added features, improved UX

What I Built

78 files. 20+ pages. A complete marketing automation platform:

Email nurture sequences
Payment tracking (Razorpay)
UTM attribution analytics
Lead management CRM
Revenue dashboard

The Numbers

Development time: ~3 months
Cost: $0 (used AI free tiers)
Hosting cost: $0 (Supabase + Netlify free tiers)
Revenue generated: Real payments from real clients

Now It's Open Source

I open-sourced the entire thing so others can use it:

⭐ Claude Coach Kit — Marketing automation
⭐ Marketing Prompts — 500+ prompts

Key Lessons

You don't need to learn to code to build software
Start with YOUR problem — don't build what you think others want
AI is a multiplier, not a replacement for thinking
Ship ugly, improve later
Open-source builds credibility faster than anything

Non-coder from India. Building with AI. Everything is possible.

I Open-Sourced 5 Years of Marketing Swipe Files (Headlines, Hooks, CTAs & More)

Krishna — Mon, 16 Mar 2026 07:57:08 +0000

For 5 years, I've been collecting marketing swipe files — headlines that convert, email subject lines, CTAs, hooks, ad copy formulas.

Today I'm releasing the entire collection for free.

What's Inside

📰 100+ Headline Formulas

The [Number] Formula: "7 Money Blocks Keeping You From $1M"
The How-To Formula: "How to Get 10 Clients in 30 Days"
The Question Formula: "Are Money Blocks Killing Your Growth?"
The Proof Formula: "From $0 to $25K/Month"

🪝 70+ Social Media Hooks

"I spent $50,000 on coaching before I learned this one thing:"
"The #1 reason coaches fail isn't what you think."
"My client went from 3 clients to 47 in 6 months. Here's the system:"

🔘 50+ CTA Variations

Urgency: "Book My Spot Now (Only 6 Left)"
Value: "Yes, I Want to 3x My Income"
Low-risk: "Try It Risk-Free for 30 Days"

📧 Email Templates

Welcome sequences
Payment recovery
Re-engagement
Newsletter formats

Why Free?

Because marketing knowledge shouldn't be gatekept behind $997 courses.

⭐ GitHub: github.com/krishna-build/marketing-prompts

Also: Claude Coach Kit — free marketing automation

5 years of real marketing experience. All yours. MIT licensed.

500+ Free Marketing Prompts & Swipe Files for Coaches (Open-Source Collection)

Krishna — Mon, 16 Mar 2026 07:53:03 +0000

After 5 years of running coaching businesses, I've collected over 500 marketing prompts, swipe files, and hooks. Today I'm open-sourcing the entire collection.

What's Included

Prompts (300+)

Email Marketing (50+ prompts)
Social Media (60+ prompts)
Sales Copy (40+ prompts)
Ad Copy (35+ prompts)
Content Ideas (45+ prompts)
Coaching Specific (50+ prompts)

Swipe Files

100+ headline formulas
80+ email subject lines
50+ CTA variations
Testimonial frameworks
Pricing page templates

Hooks

40+ Twitter hooks
35+ LinkedIn hooks
30+ Instagram hooks
25+ video script hooks

How to Use

Browse the categories
Copy prompts you need
Customize with your details
Use with Claude, ChatGPT, or manually

⭐ GitHub: github.com/krishna-build/marketing-prompts

Also check out: Claude Coach Kit — free marketing automation toolkit

MIT licensed. Free forever.

Free Self-Hosted Email Automation: Set Up in 5 Minutes with Supabase

Krishna — Mon, 16 Mar 2026 07:33:16 +0000

Want email automation without paying $200/month? Here's how to set it up in 5 minutes.

What You'll Get

Multi-step email sequences
Auto-enrollment for new leads
Smart stop rules
Delivery tracking

Prerequisites

Node.js 18+
Supabase account (free)
SMTP credentials (Gmail works)

Step 1: Clone

git clone https://github.com/krishna-build/claude-coach-kit.git
cd claude-coach-kit
npm install

Step 2: Configure

cp .env.example .env
# Add your Supabase URL + key
# Add SMTP credentials

Step 3: Start

npm run dev

Step 4: Create Your First Sequence

Open dashboard at localhost:5173
Go to Sequences → Create New
Add steps with delays (Day 1, Day 3, Day 7)
Write your email templates
Activate!

New leads are automatically enrolled. When they pay, the sequence stops.

How It Works

The email engine runs as a Supabase Edge Function. A cron job checks for pending emails and sends them via SMTP.

No external email service needed (though Resend API is supported too).

Full Project

⭐ Claude Coach Kit on GitHub

MIT licensed. Free forever.

Built by a non-coder from India using AI.