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.

Authorization & PermissionsFree tier

SpiceDB: Pricing, Features & Alternatives

Name: App Stack Builder
Availability: InStock

SpiceDB stores relationships between users and resources and answers permission checks with consistency guarantees modelled on Google's Zanzibar paper, including protection against the "new enemy" problem when access is revoked. It has about 7,200 GitHub stars, a schema language with a playground, and runs on Postgres, CockroachDB, Spanner or MySQL. It is the most complete open-source Zanzibar implementation, which suits products with sharing, nested groups and large permission graphs.

The engine is free under Apache-2.0. AuthZed sells managed versions: AuthZed Cloud is resource-based and usage-billed (from about $2 an hour for a permissions system), Dedicated Cloud is priced on reserved vCPU capacity, and Self-Hosted is an annual licence per region and per vCPU with support. As of October 2026.

SpiceDB Pricing Plans (2026)

Plan	Price	Highlights
Open sourcePopular	Free (Apache-2.0)	Self-hosted · Postgres, CockroachDB, Spanner, MySQL · Schema language and playground
AuthZed Cloud	From about $2 / hour	Managed SpiceDB · Usage-based billing · Standard support included
Dedicated / Self-hosted	Custom	Reserved capacity or your own infra · Multi-region · Premium or Enterprise support

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

Key SpiceDB Features

Self-hosted
Postgres, CockroachDB, Spanner, MySQL
Schema language and playground
Community support

Pros

+Most complete open-source Zanzibar implementation
+Strong consistency guarantees on revocation
+Several production-grade datastores

Cons

−Overkill for simple role checks
−Steeper learning curve than RBAC tools
−Managed pricing needs a sales conversation beyond Cloud

Best SpiceDB Alternatives

Compare all

OpenFGA

Free · paid plans by quote

Cerbos

Free · paid from $25/mo

Permit.io

Free · paid plans by quote

SpiceDB Compared

SpiceDB vs Cerbos SpiceDB vs OpenFGA SpiceDB vs Permit.io

SpiceDB FAQ

What is SpiceDB used for?⌄

SpiceDB is a authorization & permissions tool. Open-source (Apache-2.0) Zanzibar-style permissions database from AuthZed, used by Red Hat, IBM and GitPod. Free to self-host; AuthZed Cloud is usage-billed from about $2 an hour.

Is SpiceDB free?⌄

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

How much does SpiceDB cost?⌄

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

What are the best SpiceDB alternatives?⌄

Popular SpiceDB alternatives include OpenFGA, Cerbos, Permit.io. Compare pricing and features on our SpiceDB alternatives page.