What is App Stack Builder?

App Stack Builder is a free AI-powered tool that helps founders and developers choose the right tech stack for their projects based on budget, app type, team size, and skill level.

What is the best tech stack for SaaS in 2026?

The best tech stack for SaaS in 2026 typically includes Next.js 16 for frontend, Supabase for database and auth, Vercel for hosting, Stripe for payments, and PostHog for analytics. App Stack Builder can generate a personalized recommendation based on your specific budget and requirements.

Is App Stack Builder free to use?

Yes, App Stack Builder is completely free to use. You can generate unlimited tech stack recommendations without any cost.

What types of apps can I build with the recommended stacks?

App Stack Builder supports various app types including SaaS applications, web apps, mobile apps, e-commerce stores, internal tools, and AI/ML products.

How much does a SaaS tech stack cost per month?

A modern SaaS tech stack can cost anywhere from $0-50/month for bootstrapped startups using free tiers, $100-300/month for growth-stage startups, to $500+/month for enterprise-ready infrastructure. App Stack Builder helps you find the best tools within your specific budget.

What is the best tech stack for solo founders?

For solo founders, we recommend Next.js + Vercel (free), Supabase (free tier), Supabase Auth (free), Stripe (pay as you go), and Plausible or PostHog for analytics. This stack can run your entire SaaS for under $50/month.

Can I export my tech stack recommendations?

Yes, you can export your tech stack recommendations as a PDF document or copy them to your clipboard. You can also share a link to your stack with others.

Docs & Developer Portals

Best Documentation & Developer Portal Tools in 2026

Docs platforms sit next to a free, genuinely good alternative — a static site generator you host yourself — so the question is what the subscription adds. Usually: search that works, an API playground generated from your spec, analytics on what developers read, and an editor a non-engineer will open. Here are the best documentation platforms for 2026.

Docs & Developer Portals Tools Compared

Tool	Pricing	Free tier
Docusaurus	Free
Mintlify	Free · paid from $450/mo
GitBook	Free · paid from $65/mo
ReadMe	Free · paid from $250/mo
Redocly	From $10/mo	—

The Best Docs & Developer Portals Tools, Ranked

1. Docusaurus

Free tier· Free

Meta's open-source React docs generator — free forever, versioned, i18n-ready, and hosted anywhere static files go.

Free at any scale
Versioning and i18n built in
Enormous plugin and theme ecosystem

Docusaurus & alternatives

2. Mintlify

Free tier· Free · paid from $450/mo

Modern docs platform for API-first products: MDX in your repo, an API playground, AI search and an MCP server generated for you.

Docs live in your repo as MDX
Best-looking defaults in the category
API playground from an OpenAPI spec

Mintlify & alternatives

3. GitBook

Free tier· Free · paid from $65/mo

Block-based docs with GitHub sync — a WYSIWYG editor non-engineers can use that still round-trips to Markdown in your repo.

Editor non-engineers will actually use
True two-way Git sync
Good search out of the box

GitBook & alternatives

4. ReadMe

Free tier· Free · paid from $250/mo

API documentation hubs with personalised keys, real request logs and metrics on which endpoints developers actually call.

Personalised API keys in every example
Request logs and adoption metrics
Built for public API products

ReadMe & alternatives

5. Redocly

· From $10/mo

OpenAPI-native docs and API governance — linting, style guides and versioned references, priced per seat.

Cheapest paid tier in the category
Spec linting and governance in CI
Built on the widely used ReDoc renderer

Redocly & alternatives

How to choose a docs & developer portals tool

If everything is written by engineers in the repo, Docusaurus plus a static host may end the search.
Pick Mintlify for the best defaults on API-first product docs, including an MCP server and AI search.
Choose GitBook when writers who do not use Git need to edit the same pages as engineers.
Pick ReadMe when you are selling a public API and need request logs and per-endpoint adoption metrics.
Choose Redocly if your problem is OpenAPI governance and versioning rather than presentation.

Frequently Asked Questions

What are the best docs & developer portals tools for startups in 2026?⌄

The best docs & developer portals tools for startups in 2026 include Docusaurus, Mintlify, GitBook, ReadMe, Redocly. Compare them by pricing, free tiers, and features in the list above.

What is the best free docs & developer portals tool?⌄

Free docs & developer portals options include Docusaurus, Mintlify, GitBook, ReadMe — all offer a free tier suitable for bootstrapped startups and MVPs.

How do I choose a docs & developer portals tool?⌄

Start with your budget and team size, prefer tools with a free tier to validate, and make sure your pick integrates with the rest of your stack. App Stack Builder can recommend a complete, budget-aware stack in about 60 seconds.

Need the whole stack, not just docs & developer portals?

Get a free, AI-powered tech stack — matched to your budget, app type, and team size in 60 seconds.

Build my stack free