Software we’ve built and shipped.
Three products we build and run ourselves, and three systems we built for clients.
Our own products
Construction — commercial specialty contractors
Kaizzon
One integrated operations platform for commercial specialty contractors: RFIs, submittals, change orders, AIA G702/703 billing, field reports, and live job financials in one system, with Claude writing the daily brief and reports. Contractors own the code and the data, not a subscription.
Stack Next.js, React, TypeScript, NestJS, PostgreSQL, Prisma, Anthropic Claude, Vercel
Agriculture — beekeeping
BuzzWise
A free, no-signup toolkit for US beekeepers: data-grounded calculators, a readiness quiz, 50-state law and season guides, and an AI-assisted hive-management app, across 180+ pre-rendered pages built for search.
Stack React, TypeScript, Vite, Tailwind CSS, shadcn/ui, Supabase, OpenAI, Vercel
Home services — fence contractors
Fence company websites
A website system for US fence companies: a trade-specific site built from the company’s public listing, a live price estimator that draws the fence, and an AI preview that puts the fence in the customer’s own yard photo.
Stack HTML/CSS/JS, Vercel Functions, Google Gemini image models, Playwright
Built for clients
Anonymized to the industry they serve. The problems, the systems and the stack are real.
AI estimating and CRM platform
Construction — commercial electrical contracting
A single workspace that connects estimating, CRM, and project delivery, with AI scoring bids and pulling action items straight out of preconstruction meetings.
Stack Next.js, NestJS, PostgreSQL, Anthropic Claude, Google OAuth, Microsoft OAuth
Inspection and quality control platform
Field services — multi-site contracting
Centralized drawing versioning and a structured inspection tracker that links every field photo and observation back to the exact building plan it came from.
Stack Next.js, NestJS, PostgreSQL, Vercel Blob
Logistics company website
Logistics and transportation
A website for a US logistics company, rebuilt on a headless CMS: pricing tiers, a service-area map, case studies, a blog, a project brief form, and a driver application that collects documents.
Stack Next.js, Payload CMS, PostgreSQL, Mapbox
Have a system worth building?
Tell us how the work runs today and where the tools get in the way.
or write to hello@rexus.studio
We read every message ourselves and reply within a couple of business days.