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.

AI Gateways & LLM ProxiesFree tier

LiteLLM: Pricing, Features & Alternatives

LiteLLM is an MIT-licensed SDK and proxy server that puts every major model provider behind one OpenAI-compatible endpoint. Requests go straight from your servers to the providers you hold keys for, so no third party sits in your traffic path. The proxy adds virtual keys with budgets and rate limits per key, user or team, plus fallbacks, load balancing and spend tracking (it needs a Postgres database for those). The open-source edition is free; you pay for the server. LiteLLM Enterprise adds SSO, audit logs, role-based access and support at custom pricing.

LiteLLM Pricing Plans (2026)

Plan	Price	Highlights
Open SourcePopular	$0 (self-hosted, MIT)	Proxy server and SDK · Virtual keys, budgets, rate limits · Fallbacks and load balancing
Enterprise	Custom	SSO and audit logs · Role-based access · Secret-manager integration

Pricing summary: Free · paid plans by quote. Always confirm current pricing on the official site.

Key LiteLLM Features

Proxy server and SDK
Virtual keys, budgets, rate limits
Fallbacks and load balancing

Pros

+Free and open source (MIT)
+No third party in your request path
+Per-team keys and budgets

Cons

−You run, secure and upgrade it
−Needs Postgres for keys and spend tracking
−SSO and audit logs are Enterprise-only

Best LiteLLM Alternatives

Compare all

Helicone

Free · paid from $79/mo

Portkey

Free · paid from $49/mo

Cloudflare AI Gateway

Free · paid from $5/mo

LiteLLM Compared

LiteLLM vs Helicone LiteLLM vs Portkey LiteLLM vs Cloudflare AI Gateway

In-depth guideOpenRouter vs LiteLLM (2026): Hosted AI Gateway vs Open-Source LLM ProxyOpenRouter is a hosted service: one key, 500+ models, a 5.5% fee on credits. LiteLLM is MIT-licensed software you run yourself, with virtual keys and budgets per team. How each works, what the gateway costs at three spend levels, and why this site runs on OpenRouter.

LiteLLM FAQ

What is LiteLLM used for?⌄

LiteLLM is a ai gateways & llm proxies tool. Open-source LLM proxy and Python SDK: one OpenAI-style API for 100+ providers, with virtual keys, budgets and fallbacks you host yourself.

Is LiteLLM free?⌄

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

How much does LiteLLM cost?⌄

LiteLLM is free to use, with usage-based pricing on some features.

What are the best LiteLLM alternatives?⌄

Popular LiteLLM alternatives include Helicone, Portkey, Cloudflare AI Gateway. Compare pricing and features on our LiteLLM alternatives page.