Download M³. Start matching invoices today.
Free for 30 days or 100 invoices, whichever comes first — every feature unlocked, no sales call required to get started.
Download a trial
Server edition
Multi-user, Docker-based, Postgres. Docker Desktop installs automatically if it isn't already on the machine. A two-field setup wizard (admin email, optional AI key) and you're matching invoices in minutes.
Download Server installer (4.3 MB)Personal edition
Single-user, SQLite, laptop-friendly. Same installer, same two-field setup.
Download Personal installer (4.3 MB)Minimum requirements
What your server or laptop needs before you install — OS, RAM, disk space, and Docker prerequisites.
Download PDFUser manual
Setup wizard walkthrough, ERP connector configuration, and day-to-day matching workflow.
Download PDFWhy Windows shows a warning
You'll likely see a blue 'Windows protected your PC' screen the first time you run the installer. That's because it isn't digitally code-signed yet — a security certificate that costs several hundred dollars a year, which we haven't taken on during early access. It's not a sign anything is wrong with the software. To continue: click More info, then Run anyway.
What's included
30 days or 100 processed invoices, whichever comes first. Every feature unlocked — no crippled trial. Unlimited seats during the trial.
System note
Windows installs Docker Desktop for you automatically. Linux runs via a documented manual Docker Compose setup — it runs anywhere Docker runs.