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.

Infrastructure as CodeFree tier

Pulumi: Pricing, Features & Alternatives

Pulumi's pitch is that infrastructure should be written in a real programming language, with loops, functions, types, package managers and unit tests, instead of a DSL. The engine and SDKs are Apache 2.0, and you can keep state in your own S3 bucket for free. Pulumi Cloud adds managed state, secrets (ESC), policy and deployments. It is free for one user. Essentials is $40/month with unlimited users and up to 500 resources ($0.1825/resource/month beyond the included credits), Pro is $400 and Enterprise $2,000. It can also consume Terraform providers, so coverage is rarely the blocker.

Pulumi Pricing Plans (2026)

Plan	Price	Highlights
Free	$0 (1 user)	Unlimited resources for an individual · Managed state and secrets
EssentialsPopular	$40 / month	Up to 500 managed resources · 40 credits included · $0.1825 / resource / month beyond that
Pro	$400 / month	Up to 2,000 managed resources · 400 credits included
Enterprise	$2,000 / month	Up to 4,750 managed resources · SSO, audit logs, policy

Pricing summary: Free · paid from $40/mo. Always confirm current pricing on the official site.

Key Pulumi Features

Up to 500 managed resources
40 credits included
$0.1825 / resource / month beyond that
Unlimited users

Pros

+Real languages: types, tests, IDE autocomplete, shared packages
+Open-source engine with a free self-managed state backend
+Can use Terraform providers for long-tail coverage

Cons

−Moving from Terraform is a rewrite, not a binary swap
−General-purpose code makes it easier to write clever, unreadable infra
−Smaller hiring pool than HCL

Best Pulumi Alternatives

Compare all

OpenTofu

Free

Terraform

Free · then usage-based

AWS CloudFormation

Free

Pulumi Compared

Pulumi vs OpenTofu Pulumi vs Terraform Pulumi vs AWS CloudFormation

Pulumi FAQ

What is Pulumi used for?⌄

Pulumi is a infrastructure as code tool. Infrastructure as code in TypeScript, Python, Go, C#, Java or YAML. The engine is open source, and Pulumi Cloud starts at $40/month for teams.

Is Pulumi free?⌄

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

How much does Pulumi cost?⌄

Pulumi offers a free tier, with paid plans starting at $40/month.

What are the best Pulumi alternatives?⌄

Popular Pulumi alternatives include OpenTofu, Terraform, AWS CloudFormation. Compare pricing and features on our Pulumi alternatives page.