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.

All launches

API Development101tool.netJul 18, 2026

101Tool

Name: App Stack Builder
Availability: InStock

Free browser-based API, PDF, JSON, and developer utilities

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About

101Tool is a lightweight browser-based workspace for developers and small teams. Its API Studio supports REST, GraphQL and WebSocket workflows, multi-request tabs, Params, Auth, Headers, Body and Tests editing, response inspection, variable extraction, collection runs, Postman Collection imports and OpenAPI imports. The platform also includes local PDF optimization, JSON-to-TypeScript, Go and Python Pydantic code generation, and a developer toolkit for base, ASCII, color, URL, Base64, hexadecimal and text conversions. Korean and English interfaces, responsive layouts, light and dark themes, and detailed technical guides are included. Core utilities work without account creation or app installation.

Pricing

100% free. No signup, installation, subscription, or usage quota for core tools.

Submitted by

Jason Lee

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