Paul Gosnell

LandlordOS gives UK landlords an AI property manager (Ace) instead of a filing cabinet and a spreadsheet.

• Tenancy and property management, rent tracking, compliance deadlines
• Ace answers legal and regulatory questions with cited gov.uk sources, so landlords get real answers, not guesses
• Deterministic calculators for the money side, AI for everything else
• 90+ deep content guides that double as the AI’s knowledge base
• Next.js, TypeScript, Supabase, Vercel

Built, shipped and operated by us at p0stman.com. A good example of a vertical SaaS product taken from idea to live, revenue-generating platform by one AI-native team.

AccountsOS is a full accounting platform we built and run ourselves, with an AI accountant (Finn) at the core rather than bolted on afterwards.

What’s under the hood:

• Files VAT returns direct to HMRC through the Making Tax Digital API
• Companies House integration for company data and filing deadlines
• Live bank feeds via Plaid, Mercury and Tide
• AI built on frontier models: transaction categorisation, document extraction, a conversational AI accountant that knows your numbers
• MCP server and CLI, so the whole platform plugs straight into Claude and other AI agents
• Modern stack: Next.js, TypeScript, Supabase, Vercel

Real users, real filings, real money movement. It’s a good example of how we build: AI does the heavy lifting, deterministic code handles the money math and compliance, and everything talks to everything through clean API integrations.

Built and shipped by p0stman.com

ChilledSites is an AI-native platform that builds full websites and ad creatives from a prompt. We built it, run it, and it’s used by 10,000+ people.

• AI website generation: describe what you want, get a live, editable site
• AI ad builder: images, video and copy for social platforms
• One-click deploy and hosting, custom domains
• Token-based billing and subscriptions (Revolut Merchant), full usage metering
• Admin, analytics, margin tracking across the whole user base
• Frontier AI models for generation, deterministic code for billing and deploys
• Next.js, TypeScript, Supabase, Vercel

Built and operated by p0stman.com. This is our scale example: a consumer-facing AI SaaS handling thousands of users, live generation workloads and real recurring revenue, run lean by an AI-native team.

–> chilledsites.com