I Built 9 Free AI Business Tools - Here's What Each One Does

I spent the last week building a suite of free AI tools for business. No sign-up, no credit card, no catch. Here's what they do and why I built them.

The Problem

Every founder, freelancer, and agency spends hours on repetitive business writing: proposals, cold emails, business plans, LinkedIn posts, contracts. The writing isn't hard - it's just time-consuming and formulaic.

What I Built

All tools run in your browser, use AI to generate documents instantly, and are 100% free.

1. AI Business Writer (15 document types)

One tool that generates proposals, cold emails, business plans, pitch scripts, LinkedIn posts, follow-ups, job postings, press releases, SOWs, case studies, product descriptions, bios, testimonial requests, partnership proposals, and rejection letters.

Try it here

2. AI Proposal Generator

Enter client details and project scope. Get a complete, ready-to-send project proposal with deliverables, timeline, and pricing.

Try it here

3. AI Cold Email Writer

Generate personalized outreach for sales, investors, partnerships, or press. Choose tone and length.

Try it here

4. AI Business Plan + Pitch Script

Three tools in one: one-page business plan, 60-second investor pitch, and cold investor email.

Try it here

5. AI LinkedIn Post Generator

Six formats: personal story, tips, contrarian take, milestone, question, framework. Four tone options.

Try it here

6. AI Contract Generator

Draft freelance agreements, NDAs, SOWs, consulting agreements, SaaS terms, and more.

Try it here

7. Pitch Deck Outline Generator

10-slide investor deck with content and speaker notes for each slide.

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8. Invoice Generator

Create professional invoices with line items and tax. Print or save as PDF.

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9. Crypto Tax Calculator

Estimate capital gains tax on crypto trades. Supports US, UK, Germany, UAE, Portugal.

Try it here

Tech Stack

• Plain HTML/CSS/JS (no framework)
• Claude API for AI generation
• Hosted on Vercel (free tier)
• GitHub for version control

Total cost to build and host: $0.

What's Next

I'm adding a subscription tier for power users ($29/month) with saved templates and PDF export. Also building financial Excel templates for startups - those are on Gumroad.

Feedback welcome. What other business documents would you want generated?