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

Svix: Pricing, Features & Alternatives

Svix is the webhook-sending platform most SaaS teams reach for when they need to offer webhooks to their own customers. You call one API; Svix handles delivery with retries and backoff, HMAC signing, per-endpoint rate limits, logs and replay, and gives your customers an embeddable portal to manage their endpoints. The server is MIT-licensed and self-hostable (Rust, Postgres, optional Redis). Cloud pricing as of October 2026: Free (50K messages a month), Basic from $20/month, Professional from $490/month with 90-day retention and a 99.99% SLA, and custom Enterprise with on-prem and a HIPAA BAA. Overage on paid plans is $0.0001 per message.

Svix Pricing Plans (2026)

Plan	Price	Highlights
Open source	$0 (MIT)	Self-host the server · Postgres + optional Redis
Free	$0	50K messages / month · 7-day payload retention · Embeddable endpoint portal
BasicPopular	From $20 / month	$0.0001 per message over 50K · 30-day retention · 99.9% SLA
Professional	From $490 / month	90-day retention · 99.99% SLA · Static IPs, RBAC

Pricing summary: Free · paid from $20/mo. Always confirm current pricing on the official site.

Key Svix Features

$0.0001 per message over 50K
30-day retention
99.9% SLA

Pros

+MIT-licensed server you can self-host
+Customer-facing endpoint portal out of the box
+Generous 50K-message free tier

Cons

−Professional jumps from $20 to $490/month
−Self-hosting gives you the server, not the managed portal and SLA
−Built for sending webhooks, not receiving them

Best Svix Alternatives

Compare all

Convoy

Free · paid from $999/mo

Hook0

Free · paid from $59/mo

Hookdeck

Free · paid from $39/mo

Svix Compared

Svix vs Hookdeck Svix vs Convoy Svix vs Hook0

Svix FAQ

What is Svix used for?⌄

Svix is a webhooks infrastructure tool. Webhooks as a service: send webhooks to your customers with retries, signing, an embeddable endpoint portal and replay. The server is open source (MIT).

Is Svix free?⌄

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

How much does Svix cost?⌄

Svix offers a free tier, with paid plans starting at $20/month.

What are the best Svix alternatives?⌄

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