Your treemap tells you what's big. DiskGrowth tells you what's growing — and when you'll run out.
DiskGrowth continuously monitors folder growth on Windows Server, shows what changed since yesterday, and forecasts when each volume runs out of space. No SQL Server to babysit. No per-sensor pricing. Your data never leaves your infrastructure.
Join the waitlistFree tool for single machines. Paid agent for fleets. Launching soon — waitlist gets it first.
Sound familiar?
- The C: drive alert fires at 2 a.m. — again. You know the disk is 91% full. You have no idea what grew.
- You run a disk scanner, stare at a treemap, and compare it with what you think it looked like last month.
- Your RMM says "disk almost full". It never says which folder, how fast, or how long you've got.
One-time scanners answer "what is big". Nobody answers "what is growing". That's the question that pages you at night.
How it works
Scan on a schedule
A lightweight agent (or the free desktop app) snapshots your folder tree daily. MFT-fast scanning — a million files in under a minute on typical volumes.
See what changed
Full folder tree with sizes and file counts — plus color-coded growth deltas per folder. "Top changes this week" in one glance, not a spreadsheet diff.
Know when it ends
Per-volume and per-folder forecasts: "C: on SRV-DB01 runs out in ~12–16 days (growing 8.4 GB/week)." Ranges, not fake precision — and no forecast at all until there's enough data to be honest.
Two tools, one engine
DiskGrowth
A simple desktop app anyone on your team can run. Scan, compare snapshots, see deltas and the local forecast. One machine, full functionality, free forever. Source published under the MIT License.
DiskGrowth for teams & MSPs
A silent agent for every server you manage. Scheduled scans, growth history, and a weekly branded HTML report per client: total growth, top growers, days-to-full — ready to drop into your QBR. Zabbix integration (LLD, forecast/timeleft per folder) included. Your license file works offline; your data stays on your servers.
Pricing
Planned — final at launch. Flat per-server pricing, no sensor counting.
| Plan | Price | Servers | Includes |
|---|---|---|---|
| Free | $0 | 1 machine | Desktop app, local forecast |
| Personal | $29 / year | up to 3 | Agent, personal use |
| Business | $199 / year | up to 10 | Agent, HTML reports, Zabbix pack |
| MSP Starter | $49 / month | up to 25 | Per-client reports, Zabbix pack |
| MSP Pro | $99 / month | up to 75 | White-label reports |
| MSP Scale | $199 / month | up to 200 | White-label, priority support |
Annual billing on MSP plans: 2 months free. More than 200 servers? Get in touch.
Questions
Does my data leave my servers?
No. Scans, history and reports are generated and stored locally. There is no cloud component, no telemetry, and no account required for the free app. Reports are e-mailed via your SMTP server, if you enable it.
What are the system requirements?
Windows Server 2016+ or Windows 10/11. Single executable, no installer required, no external database. History is stored in a local SQLite file.
Will my antivirus complain?
Binaries are code-signed (OV certificate). A brand-new signed executable can still trigger SmartScreen warnings in its first weeks — that's how Microsoft builds trust for new publishers, and it fades with downloads. The scanning core and the free desktop app are published under the MIT License, so you can read — or build yourself — exactly what runs on your machines. The paid agent is closed source.
How is this different from the disk analyzers I already use — you know, the trees, the maps, the wizards?
They're excellent one-time scanners: they tell you what is big right now. DiskGrowth keeps history and tells you what is growing and when you run out. Different question, different tool.
How is this different from folder sensors in my monitoring suite, or RMM disk alerts?
If your monitoring bills per sensor, folder-level visibility gets expensive fast — and RMM alerts stop at "disk almost full". DiskGrowth monitors hundreds of folders per server at a flat per-server price, with forecasts.
Is there a Zabbix integration?
Yes — included in every paid plan: an agent integration with low-level discovery, a hard item cap and heartbeat preprocessing, plus forecast()/timeleft() per folder.
When does it launch?
Free app first, paid agent shortly after. Waitlist subscribers get the free app on day one and first access to the paid beta.
Get it first
We'll e-mail you twice: when the free app ships, and when the paid beta opens. No newsletter, no spam.