Instantly audit & slash your Microsoft licensing bills.
Upload an RVTools export or run our lightweight scanner. WinSQLTool calculates every compliant Windows Server and SQL Server licensing path and surfaces the cheapest one — in minutes, not weeks.
How It Works
From raw inventory to optimized licensing plan in three steps.
Upload or Scan
Upload an RVTools .xlsx/.csv export directly from your vSphere environment, or run our single-file winsqlscan.exe on any domain-joined Windows machine. No agents, no installs.
Engine Calculates
Our backend applies Microsoft's exact core-licensing minimums — Datacenter vs. Standard, physical host vs. per-VM, SQL Enterprise cluster-wide vs. per-VM — and finds every legal savings path.
Get Your Report
Receive a clear PDF and JSON report showing your current estimated spend, the optimized configuration, and line-by-line justification you can hand directly to your Microsoft LAR or auditor.
Built for infrastructure teams
No sales calls. No consultants. Just upload your data and get answers.
Zero-trust data handling
Your infrastructure metadata never touches our servers. The scanner runs entirely on-premise and outputs an encrypted JSON file you inspect before uploading.
Windows Server Datacenter vs. Standard
The engine models both paths: blanket Datacenter licensing on physical hosts vs. per-VM Standard licensing — and shows exactly where each wins.
SQL Server core-license optimizer
Compares per-VM Enterprise core licensing against whole-host licensing for your clusters. Standard Edition enforces the 4-core minimum. All math is shown.
RVTools import
Already have an RVTools export? Drop the .xlsx or .csv on the dashboard and we parse vInfo, vCPU, and vHost tabs automatically.
Auditor-ready output
Every report includes a machine-readable JSON and a human-readable PDF with source rows, applied rules, and total core counts — ready for your Microsoft LAR.
Results in minutes
Background processing pipeline handles environments up to 10,000 VMs. Most SMB environments complete in under 60 seconds.
See what you should actually be paying
Enter three specs from any physical host to see the cheapest compliant licensing path — no sign-up required.
SQL Server on this host?
Trusted by IT directors and infrastructure teams
“We had a Microsoft true-up coming up in 6 weeks. WinSQLTool flagged three SQL Enterprise clusters where switching to host-level licensing saved us over $180k. Our LAR validated every line.”
Infrastructure Manager
Healthcare Organization, 800 VMs
“I was skeptical about uploading anything, so I opened the JSON before uploading. It was exactly what they said — hostnames, core counts, SQL versions. No passwords, no IPs, nothing sensitive.”
Senior SysAdmin
Regional Bank, 200 Servers
“Ran the scanner, uploaded the JSON, had a full PDF report in 4 minutes. The report was good enough that our CFO used it to challenge the Microsoft EA renewal quote directly.”
IT Director
Manufacturing Company, 1,200 VMs
Ready to find out what you're overpaying?
One-time audits start at $499. Most customers recover that cost in the first month after adjusting their licensing.