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.

Webhooks InfrastructureFree tier

Hook0: Pricing, Features & Alternatives

Hook0 is a webhooks-as-a-service platform built in Rust in France: an API to send events, subscriptions per customer, retries, signatures and a management UI. Self-hosting is free under the Server Side Public License (source-available; you cannot resell it as a managed service). The EU-hosted cloud, as of October 2026: Developer free (100 events a day), Startup €59/month (30K events a day), Pro €190/month (100K events a day, 30-day retention), and Enterprise custom. An on-premise Pro licence is €500/month plus a €1,000 setup fee, or €6,000 a year.

Hook0 Pricing Plans (2026)

Plan	Price	Highlights
Self-hosted	$0 (SSPL)	Run it on your own servers · Full server and UI
Developer	€0	100 events / day · 7-day retention
StartupPopular	€59 / month	30K events / day · 14-day retention
Pro	€190 / month	100K events / day · 30-day retention

Pricing summary: Free · paid from $59/mo. Always confirm current pricing on the official site.

Key Hook0 Features

30K events / day
14-day retention

Pros

+Free self-hosting with the full UI
+EU-hosted cloud suits GDPR-sensitive teams
+Simple, predictable daily event caps

Cons

−SSPL is source-available, not OSI open source
−Smallest community of the four
−Prices are in euros and the free cloud tier is tiny

Best Hook0 Alternatives

Compare all

Svix

Free · paid from $20/mo

Convoy

Free · paid from $999/mo

Hookdeck

Free · paid from $39/mo

Hook0 Compared

Hook0 vs Svix Hook0 vs Hookdeck Hook0 vs Convoy

Hook0 FAQ

What is Hook0 used for?⌄

Hook0 is a webhooks infrastructure tool. Webhooks server and UI you can self-host for free or use as a European cloud. Source-available under the SSPL.

Is Hook0 free?⌄

Yes — Hook0 has a free tier you can start with, and paid plans for more usage and features.

How much does Hook0 cost?⌄

Hook0 offers a free tier, with paid plans starting at $59/month.

What are the best Hook0 alternatives?⌄

Popular Hook0 alternatives include Svix, Convoy, Hookdeck. Compare pricing and features on our Hook0 alternatives page.