MintMarbles Labs.
Software you actually own. Offline-first business tools that run entirely on your own machine. You pay once on Etsy, with no subscriptions, no accounts and no cloud. The range includes InvoiceFlow, Contractor Business Manager and Small Shop Manager.
Offline business tools ● Live
Key capabilities
- InvoiceFlow: invoices & quotes
- Contractor Business Manager
- Small Shop Manager: POS & inventory
- 100% offline, data stays local
- One-time purchase, free updates
- Runs in any browser on Windows, Mac & Linux
- Finished tools
- 3
- Offline
- 100%
- Subscriptions
- 0
- Platforms: Windows, Mac, Linux
- 3
Software you actually own.
MintMarble Labs builds small, sharp business tools that run on your own machine. No servers, no seats and no monthly invoice: you buy each tool once on Etsy, and it is yours.
After a decade of building retail systems, job trackers and invoicing back-ends for clients, we kept hearing the same complaints: a shop that could not ring up a sale because the internet was down, a contractor locked out of their own job history because a card expired. The tools were fine. The arrangement was not.
So every Labs tool is a finished product rather than a service. It opens in the browser you already have, keeps its data on your own disk, and works with the network cable pulled out. Updates are free within the version you bought.
What MintMarbles Labs does.
InvoiceFlow
Invoices and quotes with four print-ready A4 templates, quote-to-invoice in one click, partial payments and overdue tracking, multi-currency and reports.
Contractor Business Manager
Client to job to estimate to invoice, an estimate builder with markup, day, week and month scheduling, and per-job profit including materials and labour.
Small Shop Manager
A Quick Sale POS screen, live profit, returns, customer credit, purchases and suppliers, daily cash closing and thermal or A4 receipts.
Fully offline
Everything runs and is stored locally. Pull the network cable and nothing stops working.
Your data, portable
Back up everything to a single file and restore it on any machine, with validation so a bad file cannot overwrite good data.
No install, no account
Unzip and open in Chrome, Edge or Firefox on Windows, macOS or Linux. No setup wizard and no trial.
Inside MintMarbles Labs.
Getting started with MintMarbles Labs.
Pick a tool
Choose the tool that fits your business: invoicing, field work or retail.
Buy once on Etsy
A one-time purchase handled securely by Etsy. No subscription, no renewal.
Unzip and open
Download the ZIP, open it in your browser and start working with the included guide.
Engineered by the team behind your project.
Operated in-house
Our own team builds, hosts, supports and improves MintMarbles Labs every week.
Same standards as client work
The architecture, testing and release process we use on client projects.
Need something similar?
We build custom platforms for clients too. See our services