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 Management

Best API Gateways & API Key Management Tools in 2026

Every public API eventually needs keys, rate limits, analytics and docs. A gateway puts those in front of your service, and a key manager adds them inside it. Here are the leading options in 2026, compared on pricing, deployment model and developer experience.

API Gateways & Key Management Tools Compared

Tool	Pricing	Free tier
Unkey	Free · paid from $25/mo
Zuplo	Free · paid from $25/mo
Kong Konnect	Free · paid from $25/mo
Tyk	Free · paid plans by quote

The Best API Gateways & Key Management Tools, Ranked

1. Unkey

Free tier· Free · paid from $25/mo

Open-source API key management and rate limiting: issue, verify and revoke keys with one API call. Free up to 150K verifications.

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

Unkey & alternatives

2. Zuplo

Free tier· Free · paid from $25/mo

Edge-deployed API gateway configured in TypeScript, with API keys, rate limiting and a developer portal built in.

Policies are TypeScript in Git, deployed like code
API keys, rate limiting and docs portal included
Runs at the edge with no infrastructure to manage

Zuplo & alternatives

3. Kong Konnect

Free tier· Free · paid from $25/mo

Hosted control plane for the widely used open-source Kong Gateway, with a developer portal, analytics and AI gateway.

Huge plugin ecosystem on a proven open-source core
Runs anywhere: cloud, Kubernetes, on-prem
AI gateway features for LLM traffic

Kong Konnect & alternatives

4. Tyk

Free tier· Free · paid plans by quote

Open-source Go API gateway with REST, GraphQL and gRPC support. Free to self-host; Cloud and self-managed plans by quote.

Fully featured gateway is open source
Strong GraphQL federation support
Same product cloud or self-managed

Tyk & alternatives

How to choose a api gateways & key management tool

Choose Kong for the largest plugin ecosystem on an open-source gateway you can run anywhere, with Konnect as the hosted control plane.
Choose Zuplo for an edge-deployed gateway configured in TypeScript, with API keys and a developer portal included.
Choose Unkey if you only need API keys and per-key rate limits inside your own API, open source or hosted.
Choose Tyk for a fully open-source gateway with strong GraphQL support, with paid plans by quote.
Model request volume before choosing. Per-million overage is where gateway bills grow.

Frequently Asked Questions

What are the best api gateways & key management tools for startups in 2026?⌄

The best api gateways & key management tools for startups in 2026 include Unkey, Zuplo, Kong Konnect, Tyk. Compare them by pricing, free tiers, and features in the list above.

What is the best free api gateways & key management tool?⌄

Free api gateways & key management options include Unkey, Zuplo, Kong Konnect, Tyk — all offer a free tier suitable for bootstrapped startups and MVPs.

How do I choose a api gateways & key management tool?⌄

Start with your budget and team size, prefer tools with a free tier to validate, and make sure your pick integrates with the rest of your stack. App Stack Builder can recommend a complete, budget-aware stack in about 60 seconds.

Need the whole stack, not just api gateways & key management?

Get a free, AI-powered tech stack — matched to your budget, app type, and team size in 60 seconds.

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