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.

AI Coding Assistant

Best AI Coding Assistants in 2026

AI coding assistants have become essential to shipping fast. From IDE autocomplete to full agentic coding, here are the best AI coding tools for developers in 2026, compared on pricing and capabilities.

AI Coding Assistant Tools Compared

Tool	Pricing	Free tier
Cursor	Free · paid from $20/mo
GitHub Copilot	Free · paid from $10/mo
Google Antigravity	Free
Windsurf	Free · paid from $15/mo
Gemini Code Assist	Free · paid from $22.8/mo
Claude Code	From $17/mo	—

The Best AI Coding Assistant Tools, Ranked

1. Cursor

Free tier· Free · paid from $20/mo

AI-powered code editor with built-in agents, deep model support, and fast local development workflows.

Best-in-class AI-native code editor
Supports multiple leading AI models
Strong agent and background task support

Cursor & alternatives

2. GitHub Copilot

Free tier· Free · paid from $10/mo

AI-powered coding assistant that helps you write, review, and understand code faster directly in your IDE.

Deep IDE integration
Strong agent and chat capabilities
Scales from individuals to enterprises

GitHub Copilot & alternatives

3. Google Antigravity

Free tier· Free

AI-powered agent-first IDE from Google with autonomous AI agents, generous free tier, and multi-model support.

Extremely generous free plan
Access to multiple leading AI models
Unlimited tab completions

Google Antigravity & alternatives

4. Windsurf

Free tier· Free · paid from $15/mo

AI-powered coding assistant with fast context, multi-model support, and strong collaboration features for individuals and teams.

Strong multi-model support
Unlimited tab completions and inline edits
Transparent credit-based pricing

Windsurf & alternatives

5. Gemini Code Assist

Free tier· Free · paid from $22.8/mo

AI-powered coding assistant by Google that provides code completion, explanations, refactoring, and chat inside IDEs.

Strong IDE integration
Backed by Google Cloud
Enterprise-ready security

Gemini Code Assist & alternatives

6. Claude Code

· From $17/mo

AI coding assistant by Anthropic for writing code, analyzing data, and executing programs across web, desktop, and terminal.

Very strong reasoning and long context
Native code execution and file creation
Terminal and desktop support

Claude Code & alternatives

How to choose a ai coding assistant tool

Use Cursor or GitHub Copilot for fast in-editor autocomplete and chat.
Pick Claude Code for agentic, terminal-native, multi-file changes.
Compare monthly cost against how much time the tool actually saves you.
Check which models each tool supports and whether you can bring your own key.

Frequently Asked Questions

What are the best ai coding assistant tools for startups in 2026?⌄

The best ai coding assistant tools for startups in 2026 include Cursor, GitHub Copilot, Google Antigravity, Windsurf, Gemini Code Assist. Compare them by pricing, free tiers, and features in the list above.

What is the best free ai coding assistant tool?⌄

Free ai coding assistant options include Cursor, GitHub Copilot, Google Antigravity, Windsurf — all offer a free tier suitable for bootstrapped startups and MVPs.

How do I choose a ai coding assistant 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 ai coding assistant?

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

Build my stack free