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Free Tools for Founders & Tech Leaders
Practical, engineer-built tools to check your AI security, put numbers on your infrastructure costs, and make better architecture decisions — in minutes, not meetings.
AI Security
Find out what your AI usage is really exposing — before someone else does.
Cost & Savings
Put real numbers on your infrastructure, AI, and hiring decisions.
Core Web Vitals & Hosting Cost Checker
See what slow pages and unoptimised assets cost you every month.
Use the free toolLLM Cost Arbitrage Calculator
OpenAI API bills vs self-hosting an open model — charted over 12 months.
Use the free toolFractional CTO Budget Estimator
Full-time CTO vs freelancer vs engineering squad — true UK costs.
Use the free toolAI Feature ROI Calculator
Will that AI feature actually pay for itself? Run the numbers.
Use the free toolInfrastructure & Architecture
Production-grade foundations, generated and assessed in minutes.
Terraform Blueprint Generator
Production-ready Terraform for your stack, generated in seconds.
Use the free toolVendor Lock-In Auditor
Score how trapped your stack is — and what escape would cost.
Use the free toolRAG Readiness Checker
Is your data actually ready for an AI knowledge base?
Use the free toolPython Legacy Code Modernizer
Paste legacy Python, get a complexity report and a modern rewrite.
Use the free toolWhy are these free?
These tools answer the questions founders and technical leaders bring to us most often. We'd rather show you how we think than tell you. Use them as much as you like — and if a result raises a bigger question, that's exactly what our engineering services are for.
One verification, every tool
Verify your work email once, then use every tool in this browser for 90 days. Tool access does not subscribe you to marketing.
Private by design
AI-powered tools run on hardware we own. Your pasted text is never sent to OpenAI, Google, or any third-party model.
Real engineering behind it
The same patterns, numbers, and checklists we use in client work — not marketing fluff.
Need more than a quick check?
We design, build, and run AI infrastructure and custom software for companies that want it done properly — with zero lock-in.