Simple API Documentation Tool — 80% Cheaper

The API Documentation Tool That Developers Love

The API documentation tool that creates interactive REST API documentation and developer portals in minutes. Auto-generate from OpenAPI & Swagger specs—no coding required.

Auto-generate API docs
Interactive API explorer
Free for public APIs
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Why Developers Choose ApiNotes Over Stoplight & ReadMe

Everything you need to create API documentation, without the enterprise price tag

5-Minute Setup

Upload your OpenAPI spec and publish. No complex configuration needed.

80% Cheaper

Get enterprise features at startup prices. From $0 to $49/mo vs $399+/mo competitors.

Auto-Sync

Update your API spec, docs update automatically. Always accurate, zero maintenance.

Full Customization

Your brand, your colors, your domain. White-label documentation that feels native.

Everything You Need in an API Documentation Platform

Create professional REST API documentation with our powerful API documentation software

Automatic API Documentation Generator

Stop writing API documentation manually. Our API documentation generator creates beautiful, comprehensive REST API documentation instantly from your OpenAPI or Swagger specifications. Upload your spec and generate API docs in seconds—zero coding required.

  • Full OpenAPI 3.0 & Swagger 2.0 support
  • Automatic API documentation updates in real-time
  • API documentation hosting included
Upload OpenAPI/Swagger Spec
Drop your spec file here
YAML, JSON, or URL
API documentation generated instantly!
Interactive API Explorer
GET
/api/users/{id}
Test live in browser

Interactive API Documentation & Testing

Create interactive REST API documentation that developers can test directly in their browser. Our interactive API documentation includes live code examples, request/response samples, and a built-in API explorer for instant testing—no Postman required.

  • Try-it-now API testing built directly in docs
  • Live code samples in 10+ languages (cURL, JavaScript, Python, etc.)
  • Real-time request/response validation

Complete API Developer Portal

Build a professional API developer portal with all the resources your developers need. Combine API reference documentation, getting started guides, tutorials, and interactive examples into one beautiful, branded developer experience. Perfect for both internal and public APIs.

  • Custom branding, white-label & custom domains
  • API reference documentation, guides & tutorials
  • Authentication, versioning & changelog management
Your Developer Portal
Live
API
YourCompany API Portal
Guides
API Ref
SDK

Simple, Transparent Pricing

Save up to 80% compared to competitors with our developer-friendly pricing

Starter

Perfect for getting started

$0/month
  • 3 API projects
  • 1 team member
  • Public documentation
Get started

Developer

85% cheaper than Readme

$15/month
  • 10 API projects
  • 5 team members
  • Private documentation
  • Custom domain
Get started
Most Popular

Professional

87% cheaper than Readme

$49/month
  • Unlimited projects
  • 15 team members
  • Advanced analytics
  • Priority support
Get started

Enterprise

80% cheaper than Readme

$199/month
  • Unlimited everything
  • White-label options
  • Dedicated support
  • On-premise option
Contact sales

Ready to transform your API documentation?

Join thousands of developers who've already made the switch. Start your free trial today.