About
A small software company that builds what it uses.
That Fellow Digital LLC is a New York software company run by Gerald Mastro. We build products for sales teams and small businesses, among them MastroSDR, MastroCC, Mastro Meet and BugShot, and we build and run websites for clients.
Several of our tools started inside Mastro Management, a company we work closely with, so a real team uses them before anyone else does. We build with Claude Code, and you talk to the people doing the work: no account manager relaying messages, no ticket queue.
So far
From client websites to our own products.
- 2020 to 2022
Client websites. Sites for a pharmaceutical company, construction firms, lenders and clothing brands, built on WordPress like most sites then.
- Early 2026
Our own software. We started building products of our own with Claude Code, beginning with Job Site Daily Report and MastroSDR.
- Aug 2026
Our own site, rebuilt. Off WordPress and onto a static build, from 1.4 MB a page to about 100 KB, with every old address redirected.
- Sep 2026
MastroCC goes to work. Mastro Management’s callers start recording and sorting their calls in it, and their lead queue runs from it.
- Oct 2026
Mastro Meet pilot. Video meetings with live captions, recaps and tracked action items, rolling out inside the same team.
Ownership
Do you actually own your digital assets?
Your domain, your hosting, your analytics, your ad accounts. It is common to find a business whose domain is registered to a developer who stopped answering emails three years ago, or whose Google account is in a former employee's name.
That is a real risk, and it is invisible until the day it matters. Part of what we do is untangle it: work out who holds what, get it back into your name, and hand over the keys. You should be able to fire us and take everything with you.
Questions
What website clients ask first.
How long does a redesign take?
Most take under a week. A bigger site, or one with a store or booking, takes longer, and you get the timeline in writing before anything starts.
Can you redesign our site without taking it offline?
Yes, and this is the normal way we work. The replacement gets built on a staging address first, we check it properly, and only then does it cut over. DavosPharma is a good example: a working business site that was rebuilt and moved to new hosting with almost no downtime.
Do you offer ongoing maintenance?
Yes. Updates, security checks, backups and monitoring, so your site stays current without you thinking about it. Most sites that get compromised were running a plugin nobody had updated in two years.
Can you help our search ranking?
We handle the technical side properly: site structure, page speed, schema markup, Search Console and analytics set up so you can see what is actually happening. We will be straight with you about what is realistic rather than promising a position on page one.
What happens after launch?
You get someone to call. A site is not finished when it launches, that is when it starts being used, and things come up. Several of the relationships in our work index have run for years past the original build.
Still have a question?
Fifteen minutes, no pitch. Ask about a product, a website, or something you want built.