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.

API Gateways & Key ManagementFree tier

Unkey: Pricing, Features & Alternatives

Unkey handles the part of an API product most teams build badly: issuing keys, verifying them on every request, per-key rate limits and usage tracking, and revoking them. It is open source on GitHub and offered as a hosted service. Free covers 150K valid verifications a month and 1,000 keys. Pro starts at $25/month for 250K verifications and scales to $1,000/month for 100M, with 1M keys. It is not a full gateway: it sits inside your API rather than in front of it.

Unkey Pricing Plans (2026)

Plan	Price	Highlights
Free	$0	150K verifications / month · 1,000 API keys · 1-day logs
ProPopular	From $25 / month	250K verifications / month · 1M API keys · 7-day logs
Enterprise	Custom	Dedicated infrastructure · IP allow-listing

Pricing summary: Free · paid from $25/mo. Always confirm current pricing on the official site.

Key Unkey Features

250K verifications / month
1M API keys
7-day logs

Pros

+Open source, so it can be self-hosted
+One API call to verify a key and apply its rate limit
+Per-key usage limits and analytics built in

Cons

−Key management only, not a routing gateway
−You still write the middleware that calls it
−Short log retention on lower plans

Best Unkey Alternatives

Compare all

Zuplo

Free · paid from $25/mo

Kong Konnect

Free · paid from $25/mo

Tyk

Free · paid plans by quote

Unkey Compared

Unkey vs Zuplo Unkey vs Kong Konnect Unkey vs Tyk

Unkey FAQ

What is Unkey used for?⌄

Unkey is a api gateways & key management tool. Open-source API key management and rate limiting: issue, verify and revoke keys with one API call. Free up to 150K verifications.

Is Unkey free?⌄

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

How much does Unkey cost?⌄

Unkey offers a free tier, with paid plans starting at $25/month. Some plans are usage-based (pay-as-you-go).

What are the best Unkey alternatives?⌄

Popular Unkey alternatives include Zuplo, Kong Konnect, Tyk. Compare pricing and features on our Unkey alternatives page.