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That Fellow Digital

Software company, New York

Software that does the busywork, so your team can do the work.

We build tools that take prospecting, call notes, meeting follow-ups, site reports and bug reports off a team’s plate. Some run every day inside a real sales team. We also build fast websites for small businesses.

Open to anyone
4
Used in-house
4
In development
2

The stack we build on

  • Claude
  • Cloudflare
  • Astro
  • Next.js
  • React
  • TypeScript
  • Node.js
  • Neon
  • PostgreSQL
  • Stripe
  • Vercel
  • GitHub
  • Tailwind CSS
  • Three.js
  • WordPress
  • Google Ads
  • Meta

What we are building

Three products that cover a sales team’s day: who to contact, what happened on the call, and what everyone agreed to do next.

Everything else

Smaller tools, each doing one job well.

All 10, in detail
  • Live

    BugShot

    A bug report button that sends the evidence, not just the complaint.

  • Live

    Job Site Daily Report

    Daily site reports a supervisor can finish from the truck.

  • Live

    Link Graveyard

    Find the dead links on your website before your customers do.

  • Internal

    Mastro world

    A live 3D map of the team, its work and its territory.

  • Internal

    TF-Brain

    One shared memory for every AI agent we run.

  • In development

    Tapedeck

    A desktop recorder that turns a meeting into a transcript on your own machine.

Next up Coughupthedoc: month-end paperwork for bookkeeping firms, collected without the chasing.

How we build

A small team that ships like a bigger one.

  1. 01

    Built with Claude Code.

    Claude Code writes most of our code, and we review every change. Our agents share one memory, TF-Brain, so each session starts where the last one stopped, on any machine.

  2. 02

    Real work before release.

    MastroCC, Mastro Meet and Mastro world were built for a working sales team and are tested on its real calls and meetings before they are offered to anyone else.

  3. 03

    Code for rules, models for judgment.

    Exact rules and lookups stay in plain code. A model is used only where a call needs judgment, like sorting a call outcome, and the model behind it is a setting, not a rewrite.

  4. 04

    Labels that mean what they say.

    Every product here says whether it is live, internal or still being built. No made-up customer counts, no borrowed logos.

Websites

We also build the website. First.

For small businesses: we rebuild your site by hand, send you a private link to the finished version, and you decide after clicking through it on your own phone. The code, the domain and the hosting stay in your name.

Illyro Logistics home page: premium freight transportation, with a quote button and a photo of a truck
Mastro Brothers Concrete home page: Concrete that holds New York up, with a quote button

Illyro Logistics and Mastro Brothers Concrete, both live.

Want to talk it through?

Book fifteen minutes, or write to us about a product, a website or something you need built. You will hear back from the person who would build it.