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Utilities · head to head

Calsense vs WinDirStat

Calsense logo

Calsense

Utilities

Central irrigation control and water management for municipalities, schools and universities

From
On request
Rated
-
Full reviewWebsite
WinDirStat logo

WinDirStat

Utilities

Windows disk usage analyser that shows where space went as a colour-coded treemap

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only WinDirStat has a free tier, so it costs nothing to try first.
  • Each has a real cost: Calsense it is a North American product with a narrow dealer network, so agencies outside the United States have effectively no route to buy or support it.; WinDirStat it walks the directory tree rather than reading the NTFS master file table, so a full scan takes minutes where WizTree takes seconds on the same drive.
  • They diverge on capability: Calsense covers Flow-based fault shutdown, WinDirStat covers Treemap visualisation.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Calsense and WinDirStat actually diverge.

Attributes where Calsense and WinDirStat differ
AttributeCalsenseWinDirStat
Starting priceOn requestFree
Pricing modelquoteOpen source, no licence fee
Free tierNoYes
PlatformsWeb, iOS, AndroidWindows

Identical on both: user rating (Not yet rated), category (Utilities).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Calsense

  • Flow-based fault shutdown
  • ET-based scheduling
  • Two-wire and conventional
  • Central management
  • Water budget reporting
  • Master valve and pump control
  • Weather station integration
  • Mobile field access

Only in WinDirStat

  • Treemap visualisation
  • Three linked views
  • Multithreaded scanning
  • Cleanup actions
  • Any filesystem
  • GPL licensed

What people use each for

The jobs each tool is most often brought in to do.

Calsense

  • A school district needing a broken lateral shut off automatically overnight rather than discovered at the next site visitnot WinDirStat
  • A city parks department reporting water use against a drought allocation by sitenot WinDirStat
  • A university campus consolidating dozens of legacy controllers under one management interfacenot WinDirStat
  • A public agency that would rather capitalise irrigation control than carry a per-controller annual feenot WinDirStat

WinDirStat

  • Finding what filled a Windows system drive when the usual suspects are not responsiblenot Calsense
  • Auditing a shared or network drive where files are spread across thousands of foldersnot Calsense
  • Environments where licence terms forbid personal-use-only freeware on company machinesnot Calsense
  • Explaining disk usage visually to someone who will not read a list of folder sizesnot Calsense

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Calsense

  • It is a North American product with a narrow dealer network, so agencies outside the United States have effectively no route to buy or support it.
  • Install cost is high relative to commercial irrigation controllers because flow sensing, master valves and proper wiring are part of the design rather than optional extras.
  • The interface and workflows are built for irrigation technicians, not casual users, so a small grounds team without a dedicated irrigation specialist will underuse most of what they paid for.
  • Public sector focus means procurement paperwork, bid specifications and cooperative contract vehicles are part of the process, which lengthens purchase timelines regardless of budget availability.
  • No pricing is published, and the no-subscription claim is conditional on the communication model chosen, so the total cost cannot be established without a specific quote and a careful read of which model applies.

WinDirStat

  • It walks the directory tree rather than reading the NTFS master file table, so a full scan takes minutes where WizTree takes seconds on the same drive.
  • The version most users have installed is the 2007 build, and because it was dormant for so long, search results and download mirrors still point at it.
  • It is Windows only, so a mixed estate needs a different tool for macOS and Linux machines.
  • There is no scheduling, reporting or export for fleet use, so it answers a question on one machine at a time rather than monitoring storage across an organisation.
  • Hard links, junctions and deduplicated volumes can be counted in ways that make the totals disagree with what Windows reports, which causes confusion on servers.

Pricing, plan by plan

Calsense

On request
  • CS3000 system$undefined/year
    • Controllers and field hardware quoted per site
    • No annual data or subscription fee on some communication models
    • Some configurations include a 4G modem with ten years of cellular data

WinDirStat

Free
  • WinDirStatFree
    • GPL licensed
    • Commercial use permitted
    • No paid edition or feature gating

Which should you pick?

Choose Calsense if

  • You need flow-based fault shutdown.
  • You work on Web, iOS, Android.
  • You also want et-based scheduling.
Calsense review

Choose WinDirStat if

  • You need treemap visualisation.
  • You want to start without paying.
  • You work on Windows.
  • You also want three linked views.
WinDirStat review

Questions people ask

Is Calsense or WinDirStat better?
Neither clearly leads. Calsense starts at On request and WinDirStat at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Calsense or WinDirStat?
WinDirStat has a free tier; the other does not. Paid plans start at On request for Calsense and Free for WinDirStat.
Does Calsense or WinDirStat run on more platforms?
Calsense runs on Web, iOS, Android. WinDirStat runs on Windows.
Can I use WinDirStat for free?
Yes. WinDirStat has a free tier, so you can try it without paying. Calsense starts at On request.
What is Calsense best used for?
Calsense is most often used for a school district needing a broken lateral shut off automatically overnight rather than discovered at the next site visit, a city parks department reporting water use against a drought allocation by site, a university campus consolidating dozens of legacy controllers under one management interface, a public agency that would rather capitalise irrigation control than carry a per-controller annual fee. Of those, a school district needing a broken lateral shut off automatically overnight rather than discovered at the next site visit and a city parks department reporting water use against a drought allocation by site are not what WinDirStat is typically brought in for.
What can Calsense do that WinDirStat cannot?
Calsense covers Flow-based fault shutdown, ET-based scheduling, Two-wire and conventional, Central management. WinDirStat covers Treemap visualisation, Three linked views, Multithreaded scanning, Cleanup actions.

Answered from the vendors’ own pages

Calsense: Is there an annual subscription?

Depending on the communication model selected, some CS3000 configurations carry no annual data or subscription fee, and some include a 4G modem with ten years of cellular data. Confirm which model your quote covers.

WinDirStat: Is WinDirStat still maintained?

Yes. It was dormant from around 2007 until new maintainers resumed development and released the 2.x line with multithreaded scanning and current Windows support.

Calsense: Does it shut off a broken pipe automatically?

Yes. It compares actual to expected flow per station and can isolate the station or shut the mainline, which is the main reason agencies specify it.

WinDirStat: Can I use it at work?

Yes. It is GPL licensed with no personal-use restriction, which is the practical advantage over free-for-personal-use alternatives in this category.

Calsense: Who typically buys it?

City parks departments, school districts, universities, military bases and other large public landscapes in North America.

WinDirStat: Why is it slower than WizTree?

Different method. WizTree reads the NTFS master file table directly; WinDirStat traverses directories, which is slower but works on any filesystem, including network shares.

Calsense: Does it support two-wire decoders?

Yes, along with conventional wiring and hybrid installations on the same platform.

WinDirStat: Does it run on macOS or Linux?

No. Separate projects exist with similar treemap interfaces, but WinDirStat itself is Windows only.

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