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.

Browser Infrastructure for AI AgentsFree tier

Steel: Pricing, Features & Alternatives

Steel is an open-source browser API for AI agents. It manages Chromium sessions, cookies, proxies and CAPTCHA solving behind a simple API that works with Playwright, Puppeteer and agent frameworks. The hosted service gives 100 free browser hours a month, the most generous free tier in the category, and bills by usage after that. Because the core is open source, you can self-host it if you outgrow the cloud (as of August 2026).

Steel Pricing Plans (2026)

Plan	Price	Highlights
FreePopular	$0 (100 browser hours / month)	100 browser hours / month · Session management · Playwright and Puppeteer
Usage-based	Pay per browser hour after free tier	Higher concurrency · Proxies and CAPTCHA solving
Open Source	$0 (self-hosted)	Run the browser API yourself

Pricing summary: Free · then usage-based. Always confirm current pricing on the official site.

Key Steel Features

100 browser hours / month
Session management
Playwright and Puppeteer

Pros

+100 free browser hours a month
+Open source, so you can self-host
+Agent-friendly API

Cons

−Smaller company than Browserbase
−Fewer enterprise features
−Self-hosting browsers is heavy on memory

Best Steel Alternatives

Compare all

Browserless

Free · paid from $25/mo

Browserbase

From $20/mo

Browser Use

Free · then usage-based

Steel Compared

Steel vs Browserbase Steel vs Browser Use Steel vs Browserless

In-depth guideBest Browser Infrastructure for AI Agents 2026: Kitesurf vs Browserbase vs Browser UseCloudflare shipped a browser with no Chromium in it. Kitesurf, Browserbase, Browser Use, Steel, Stagehand and Firecrawl compared on cost per browser hour, session persistence, and anti-bot reality.

Steel FAQ

What is Steel used for?⌄

Steel is a browser infrastructure for ai agents tool. Open-source browser API for AI agents with 100 free browser hours a month, then usage-based pricing.

Is Steel free?⌄

Yes — Steel has a free tier you can start with, and paid plans for more usage and features.

How much does Steel cost?⌄

Steel is free to use, with usage-based pricing on some features.

What are the best Steel alternatives?⌄

Popular Steel alternatives include Browserless, Browserbase, Browser Use. Compare pricing and features on our Steel alternatives page.

Not sure if Steel fits your stack?

Get a free, AI-powered tech stack tailored to your budget, app type, and team size — including the best browser infrastructure for ai agents pick for you.

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