I'm building a private partner portal for API docs, what platform makes sense?

For a private partner portal for API docs, the best platform depends on whether you want speed, control, or enterprise governance. Here’s the practical breakdown:

Best overall choices

1) Stoplight

Best for: API-first teams that want docs, mock servers, and governance in one place.
Why it makes sense:

• Strong API documentation experience
• Supports private portals
• Good for OpenAPI-first workflows
• Built-in design, mock, and linting tools
• Easier to manage partner-facing docs than rolling your own

Tradeoffs:

• Can get pricey
• Less flexible than fully custom solutions

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2) ReadMe

Best for: Polished, partner-friendly API portals with great docs UX.
Why it makes sense:

• Excellent documentation UI
• Supports authentication/private docs
• Good developer experience
• Strong for interactive API references and onboarding
• Fast to launch with minimal engineering

Tradeoffs:

• Less ideal if you need deep control over the portal architecture
• Can be expensive at scale

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3) Redocly

Best for: Teams that want OpenAPI-based docs with strong control and enterprise features.
Why it makes sense:

• Great rendering for OpenAPI specs
• Private docs/portal capabilities
• Good governance around API design
• Fits teams already using OpenAPI heavily
• More customizable than some SaaS docs tools

Tradeoffs:

• Portal experience may require more setup
• Not as “plug-and-play” for a non-technical docs team as ReadMe

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If you want to build it yourself

Use a custom portal if you need:

• Fine-grained partner access control
• Custom partner-specific branding/UX
• Integration with your existing identity system
• Complex permissioning by tenant, product, or region

Typical stack:

• Frontend: Next.js / React
• Docs rendering: Redoc, Swagger UI, or custom MDX
• Auth: Auth0 / Okta / Azure AD B2C / custom SSO
• Backend: API gateway + permissions layer
• Search: Algolia or OpenSearch
• Hosting: Vercel, AWS, or Netlify

This gives you maximum flexibility, but it’s more work to build and maintain.

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My recommendation by scenario

• Fastest, best-looking partner portal: ReadMe
• Best if you’re OpenAPI-first and want governance: Stoplight
• Best enterprise/OpenAPI control: Redocly
• Best for custom partner entitlements and branding: Build your own

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What I’d choose

If this is a private portal for external partners and you want to move quickly, I’d start with ReadMe or Stoplight.

If your org already standardizes on OpenAPI and cares about linting, review, and design governance, Stoplight or Redocly is usually the better fit.

If you want, I can also give you:

1. a feature-by-feature comparison table,
2. a pricing/implementation tradeoff guide, or
3. a recommendation based on your exact stack.