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.

Localhost Tunnels

The 3 Best ngrok Alternatives in 2026

Name: App Stack Builder
Availability: InStock

Looking for an alternative to ngrok? Below we compare the best localhost tunnels alternatives by pricing, free tiers, and what each is best for — so you can pick the right fit for your budget and stack.

Why look for a ngrok alternative?

ngrok is a solid localhost tunnels choice, but it isn't the right fit for everyone. The most common reasons teams evaluate alternatives:

−Free plan shows an interstitial page and caps requests
−Custom domains need Pay-as-you-go
−Gets expensive for always-on production ingress

ngrok vs Alternatives — Quick Comparison

Tool	Pricing	Rating	Best for
ngrokYou searched	Free · paid from $10/mo	4.7	Localhost Tunnels — tunnels, localhost
1.Cloudflare Tunnel	Free	4.7	Localhost Tunnels — tunnels, zero-trust
2.Pinggy	Free · paid from $3/mo	4.5	Localhost Tunnels — tunnels, localhost
3.zrok	Free · paid plans by quote	4.4	Localhost Tunnels — tunnels, open-source

Top ngrok Alternatives, Explained

1. Cloudflare Tunnel

Free tier4.7· Free

Cloudflare Tunnel runs a small daemon, cloudflared, that opens outbound connections to Cloudflare; traffic for your hostname comes in through Cloudflare’s network, with its CDN, WAF and Access login in front, and no inbound port is ever opened. Named tunnels are free and need a domain using Cloudflare DNS. Quick Tunnels (cloudflared tunnel --url) need no account and give a random trycloudflare.com URL, but they have no uptime guarantee, cap at 200 in-flight requests and do not support server-sent events, so they are for testing only. It lacks ngrok’s request inspector and replay.

Free with no bandwidth meter
No inbound ports, with Cloudflare security in front
Fine for long-running production services

Cloudflare Tunnel pricing & review ngrok vs Cloudflare Tunnel

2. Pinggy

Free tier4.5· Free · paid from $3/mo

Pinggy exposes a local port through an SSH reverse tunnel, so the only requirement is the OpenSSH client already on Windows, macOS and Linux: one command prints a public HTTP(S), TCP or UDP URL, with a terminal UI and a web debugger for requests. The free plan gives random subdomains and a 60-minute session limit. Pro adds persistent subdomains, custom domains with automatic TLS, wildcard domains and persistent TCP/UDP ports; Pinggy’s own comparison page lists it at $3 per month (seat-based, annual billing saves up to 17%). The main pricing page renders client-side, so re-check that figure.

Nothing to install: plain SSH works
Custom domains for about $3 a month
UDP and TCP as well as HTTP

Pinggy pricing & review ngrok vs Pinggy

3. zrok

Free tier4.4· Free · paid plans by quote

zrok shares a local web server, files or TCP/UDP service either publicly through a URL or privately, so only other zrok users you allow can reach it, with no URL on the internet at all. It is built on OpenZiti, NetFoundry’s open-source zero-trust overlay, and is Apache-2.0 licensed and actively maintained. The hosted service at zrok.io is free with 5 GB of bandwidth a day, 25 environments and 50 shares; commercial plans are by quote from NetFoundry. Self-hosting removes every limit, at the cost of running an OpenZiti network.

Apache-2.0 and self-hostable with no limits
Private shares with no public URL at all
Generous free hosted tier

zrok pricing & review ngrok vs zrok

Frequently Asked Questions

What are the best alternatives to ngrok in 2026?⌄

The best ngrok alternatives in 2026 are Cloudflare Tunnel, Pinggy, zrok. Each is a localhost tunnels option you can compare on pricing, free tiers, and features in the table above.

Is there a free alternative to ngrok?⌄

Yes — Cloudflare Tunnel, Pinggy, zrok offer free tiers, making them strong free ngrok alternatives for bootstrapped startups.

Why look for a ngrok alternative?⌄

A common reason teams switch is free plan shows an interstitial page and caps requests. Beyond that, people compare localhost tunnels tools on pricing, specific feature gaps, ease of use, and whether an open-source or free-tier option exists — so they can pick the best fit for their stack and budget.

What is the cheapest ngrok alternative?⌄

Cloudflare Tunnel is among the most affordable ngrok alternatives — free. Check the comparison table above for the full pricing breakdown.

Which ngrok alternative is rated highest?⌄

Cloudflare Tunnel is the highest-rated ngrok alternative in our catalog at 4.7 out of 5, making it a strong pick if you want a well-reviewed option.