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

The 6 Best Windsurf Alternatives in 2026

Name: App Stack Builder
Availability: InStock

Looking for an alternative to Windsurf? Below we compare the best ai coding assistant alternatives by pricing, free tiers, and what each is best for — so you can pick the right fit for your budget and stack.

Why look for a Windsurf alternative?

Windsurf is a solid ai coding assistant choice, but it isn't the right fit for everyone. The most common reasons teams evaluate alternatives:

−Prompt credits can run out quickly
−SSO is a paid add-on for Teams
−Less mature ecosystem than Copilot

Windsurf vs Alternatives — Quick Comparison

Tool	Pricing	Free tier	Rating	Best for
WindsurfYou searched	Free · paid from $15/mo		4.7	AI Coding Assistant — windsurf, ai
Cursor	Free · paid from $20/mo		4.9	AI Coding Assistant — cursor, ai-editor
GitHub Copilot	Free · paid from $10/mo		4.7	AI Coding Assistant — ai, developer-tools
Google Antigravity	Free		4.7	AI Coding Assistant — google, antigravity
OpenAI Codex	Free · paid from $20/mo		4.5	AI Coding Assistant — openai, codex
Gemini Code Assist	Free · paid from $22.8/mo		4.4	AI Coding Assistant — ai, ide
Claude Code	From $17/mo	—	4.8	AI Coding Assistant — ai, claude

Top Windsurf Alternatives, Explained

1. Cursor

Free tier4.9· Free · paid from $20/mo

Cursor is an AI-first code editor designed to replace traditional IDE workflows. It integrates agents, background tasks, and support for multiple AI models including OpenAI, Claude, and Gemini, with scalable usage plans for individuals and teams.

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

Cursor pricing & review Windsurf vs Cursor

2. GitHub Copilot

Free tier4.7· Free · paid from $10/mo

GitHub Copilot is an AI coding assistant developed by GitHub that provides code completions, chat, agents, and code review features inside popular IDEs. It supports individual developers, teams, and enterprises with different usage limits and governance controls.

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

GitHub Copilot pricing & review Windsurf vs GitHub Copilot

3. Google Antigravity

Free tier4.7· Free

Google Antigravity is an AI-first development environment built by Google, released in public preview in November 2025. It features an agent-first architecture where autonomous AI agents can plan, execute, and verify tasks across your editor, terminal, and browser. The free tier includes access to Gemini 3 Pro, Claude Sonnet & Opus 4.5, unlimited tab completions, unlimited command requests, and generous weekly rate limits. Available for Windows, macOS, and Linux.

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

Google Antigravity pricing & review Windsurf vs Google Antigravity

4. OpenAI Codex

Free tier4.5· Free · paid from $20/mo

OpenAI Codex is an agentic coding system that can read, edit, and run code across your project. It ships as an open-source CLI, IDE extensions, and a cloud agent in ChatGPT, powered by GPT-5-Codex models. The CLI is free (bring your own API key); higher usage comes with ChatGPT Plus, Pro, and Business plans or API billing.

Powerful agentic, multi-file coding
Open-source CLI is free
Backed by GPT-5-Codex models

OpenAI Codex pricing & review Windsurf vs OpenAI Codex

5. Gemini Code Assist

Free tier4.4· Free · paid from $22.8/mo

Gemini Code Assist is Google’s AI coding assistant for individuals and teams. It integrates directly into popular IDEs, offers inline code completion, chat-based help, and enterprise-grade security controls for organizations.

Strong IDE integration
Backed by Google Cloud
Enterprise-ready security

Gemini Code Assist pricing & review Windsurf vs Gemini Code Assist

6. Claude Code

4.8· From $17/mo

Claude Code is an AI-powered coding and productivity assistant built by Anthropic. It supports code generation, execution, file creation, research, and long-context reasoning, with usage tiers designed for individuals and teams.

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

Claude Code pricing & review Windsurf vs Claude Code

Frequently Asked Questions

What are the best alternatives to Windsurf in 2026?⌄

The best Windsurf alternatives in 2026 are Cursor, GitHub Copilot, Google Antigravity, OpenAI Codex, Gemini Code Assist. Each is a ai coding assistant option you can compare on pricing, free tiers, and features in the table above.

Is there a free alternative to Windsurf?⌄

Yes — Cursor, GitHub Copilot, Google Antigravity offer free tiers, making them strong free Windsurf alternatives for bootstrapped startups.

Why look for a Windsurf alternative?⌄

A common reason teams switch is prompt credits can run out quickly. Beyond that, people compare ai coding assistant tools on pricing, specific feature gaps, ease of use, and whether an open-source or free-tier option exists — so they can pick the best fit for their stack and budget.

What is the cheapest Windsurf alternative?⌄

Cursor is among the most affordable Windsurf alternatives — free · paid from $20/mo. Check the comparison table above for the full pricing breakdown.

Which Windsurf alternative is rated highest?⌄

Cursor is the highest-rated Windsurf alternative in our catalog at 4.9 out of 5, making it a strong pick if you want a well-reviewed option.

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