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.

MCP Testing & HostingFree tier

MCP Inspector: Pricing, Features & Alternatives

MCP Inspector is the reference testing tool maintained by the Model Context Protocol project. Run `npx @modelcontextprotocol/inspector` against any server and you get a local web UI that lists its tools, resources and prompts, lets you call each one with your own arguments, and shows every protocol message. The same binary also ships a scriptable CLI for CI and a terminal UI. It is free and open source (MIT, moving to Apache-2.0), with around 11,000 GitHub stars as of October 2026. It tests the protocol, not the model: there is no LLM chat or eval suite.

MCP Inspector Pricing Plans (2026)

Plan	Price	Highlights
Open SourcePopular	$0	Web UI, CLI and TUI · STDIO, SSE and Streamable HTTP · Raw JSON-RPC message log

Pricing summary: Free. Always confirm current pricing on the official site.

Key MCP Inspector Features

Web UI, CLI and TUI
STDIO, SSE and Streamable HTTP
Raw JSON-RPC message log

Pros

+Official reference tool, always current with the spec
+Free and open source
+CLI mode scripts into CI

Cons

−No LLM playground or evals
−Local only, nothing shared with a team
−Bare-bones UI

Best MCP Inspector Alternatives

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MCP Playground Online

Free

Smithery

Free · paid from $10/mo

MCP Inspector Compared

MCP Inspector vs MCP Playground Online MCP Inspector vs Smithery

MCP Inspector FAQ

What is MCP Inspector used for?⌄

MCP Inspector is a mcp testing & hosting tool. The official open-source debugger for MCP servers: list tools, call them by hand and read the raw JSON-RPC traffic.

Is MCP Inspector free?⌄

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

How much does MCP Inspector cost?⌄

MCP Inspector is free to use.

What are the best MCP Inspector alternatives?⌄

Popular MCP Inspector alternatives include MCP Playground Online, Smithery. Compare pricing and features on our MCP Inspector alternatives page.