Generate a Tech Stack for Software
A startup tech stack with a build, buy or open-source call on every part of your app, fitted to your team.
How It Works
Describe Your Idea
One sentence: what you'd build and who uses it.
Answer 3 Quick Picks
Where people use it, who builds it, and one constraint if you have one.
Get Your Stack, Plus the Pushback
A path, the stack and a call per part, each with a cost estimate. Download PDF or JSON.
Where Tech Strategy Sits in Discovery
What to build, what to buy? Tech Strategy picks a stack and makes the call on each main part. No other tool needed first.
Use this when: You have an idea and no stack yet, and want one before you build.
Who it's for: Founders and small teams choosing a first stack.
Build, Buy or Open Source, Part by Part
It names one stack, not a list of tools, then makes the call on each part. Build the core, buy the rest. Costs are estimates, not a price list.
Firebase + Next.js + Node.js by Default
Next.js on the front, Node.js for logic, Firebase for sign-in, database, storage, functions and hosting. One platform, one bill. The stack changes only for a reason you state.
3-5 Vendors, Not 8-12
Every vendor is another bill, API key and thing that breaks at night. Keep a startup tech stack to 3-5. The default platform's own service comes first. Six or more gets flagged.
Frequently Asked Questions
The tools your app runs on: front end, logic, database, sign-in, hosting. This tech stack generator picks one and makes a build, buy or open-source call per part.
Start with who builds it: the best stack is usually the one your team already knows. Buy what every product needs. Build only your core. Keep vendors to 3-5.
The call on each part of your app: write it yourself, or pay for what exists. Build what makes you different. Buy sign-in, payments and email.
There is no single startup tech stack. The default here is Next.js, Node.js and Firebase: one platform, one bill. More in the Default Stack principle.
Name your reason. The default changes for a real constraint, such as a team that knows another stack or code you already have. "I prefer it" gets pushed back.
Not by us. Your answers go to the AI for the run, then live only in this tab; a reload clears them. Download the PDF or JSON to keep the result.
Where To Next
Next discovery step:Project Scope
Principles behind it:Default Stack, Consolidation
When you're ready to build:PWA in 6 WeeksMVP in 6 Weeks
Built & Maintained by Varstatt
Varstatt is a one-person product studio run by Jurij Tokarski, product engineer since 2011. These tools are free and open — no signup, no catch.