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Manufacturing · head to head

Kepware Server vs Protolabs

Kepware Server logo

Kepware Server

Manufacturing

Industrial connectivity server translating 150-plus PLC protocols into OPC UA, formerly KEPServerEX

From
On request
Rated
-
Full reviewWebsite
Protolabs logo

Protolabs

Manufacturing

Instant online quoting for machined, moulded, printed and sheet metal parts

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Kepware Server the base server is the small part of the bill; driver suites are priced by protocol family, and a mixed-vendor plant buys several, which is how a connectivity layer alone reaches tens of thousands of dollars.; Protolabs this is a manufacturing service, not software you licence, so comparing it with CAD or MES tools is a category error; the platform is free because the margin is in the parts.
  • They diverge on capability: Kepware Server covers 150-plus device drivers, Protolabs covers Instant CAD quoting.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Kepware Server and Protolabs actually diverge.

Attributes where Kepware Server and Protolabs differ
AttributeKepware ServerProtolabs
PlatformsWindows, LinuxWeb, Cloud, API

Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (Manufacturing).

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 Kepware Server

  • 150-plus device drivers
  • OPC UA server
  • IoT Gateway
  • DataLogger
  • Redundancy Master
  • Security Policies
  • Configuration API
  • Kepware Edge

Only in Protolabs

  • Instant CAD quoting
  • Automated DFM feedback
  • CNC machining
  • Injection moulding
  • Industrial 3D printing
  • Sheet metal fabrication
  • Protolabs Network
  • Account tooling

What people use each for

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

Kepware Server

  • Feeding a historian from a mixed plant of Allen-Bradley and Siemens PLCs without writing per-protocol driversnot Protolabs
  • Publishing CNC machine state from FANUC and Haas controls to an OEE system over MQTTnot Protolabs
  • Bridging legacy serial Modbus devices into an OPC UA architecture during a phased controller replacementnot Protolabs
  • Running redundant collection servers so a cloud analytics pipeline does not lose data during Windows patchingnot Protolabs

Protolabs

  • A product team needing five machined aluminium prototypes in hand this week to unblock a design reviewnot Kepware Server
  • A startup bridging to volume with an aluminium injection mould before committing to hardened production toolingnot Kepware Server
  • An engineer wanting manufacturability feedback on a part before sending it to an internal machine shopnot Kepware Server
  • A maintenance team ordering a one-off sheet metal bracket without opening a supplier accountnot Kepware Server

Where each one falls short

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

Kepware Server

  • The base server is the small part of the bill; driver suites are priced by protocol family, and a mixed-vendor plant buys several, which is how a connectivity layer alone reaches tens of thousands of dollars.
  • KEPServerEX to Kepware Server 7 is a migration rather than an in-place upgrade, and driver entitlements do not always transfer cleanly, so budget for revalidating every channel.
  • The full driver portfolio is Windows-only; the Linux product, Kepware Edge, supports a subset of drivers and is subscription-licensed by tag count, so an edge-first architecture cannot simply reuse the Windows configuration.
  • Three names have been in circulation for the same lineage, and quotes, forum answers and integrator experience still mix KEPServerEX, ThingWorx Kepware Server and Kepware Server, which produces mismatched proposals.
  • It is a translation layer with no storage, contextualisation or visualisation of its own, so it is always an addition to a historian or platform purchase rather than a substitute for one.

Protolabs

  • This is a manufacturing service, not software you licence, so comparing it with CAD or MES tools is a category error; the platform is free because the margin is in the parts.
  • Unit prices are well above a conventional job shop at volume, and past a few thousand parts a traditional supplier or an offshore moulder will beat it substantially.
  • The instant quoting engine only handles geometry it can analyse automatically; complex parts, unusual features or tight tolerances fall out to a manual quote and lose the speed advantage that justified the premium.
  • Material, finish and tolerance options are constrained to what the automated process supports, so designs needing a specific alloy temper or an unusual surface treatment are pushed to Protolabs Network and lose the one-day lead time.
  • Protolabs Network parts are made by third-party partners rather than in Protolabs own factories, so quality consistency and communication depend on which partner is allocated, and the buyer does not choose.

Pricing, plan by plan

Kepware Server

On request
  • Kepware Server$undefined/year
    • Base server as a perpetual licence with annual maintenance, or subscription
    • Driver suites priced by protocol family and bought separately from the server
    • Advanced plug-ins such as IoT Gateway, DataLogger and Redundancy Master licensed individually

Protolabs

On request
  • Protolabs parts$undefined/month
    • The quoting platform itself is free to use with no subscription
    • Parts are priced per order from geometry, material, quantity and lead time
    • No minimum order quantity, including on injection moulding

Which should you pick?

Choose Kepware Server if

  • You need 150-plus device drivers.
  • You work on Windows, Linux.
  • You also want opc ua server.
Kepware Server review

Choose Protolabs if

  • You need instant cad quoting.
  • You work on Web, Cloud, API.
  • You also want automated dfm feedback.
Protolabs review

Questions people ask

Is Kepware Server or Protolabs better?
Neither clearly leads. Kepware Server starts at On request and Protolabs at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kepware Server or Protolabs?
Kepware Server starts at On request and Protolabs at On request.
Does Kepware Server or Protolabs run on more platforms?
Kepware Server runs on Windows, Linux. Protolabs runs on Web, Cloud, API.
What is Kepware Server best used for?
Kepware Server is most often used for feeding a historian from a mixed plant of allen-bradley and siemens plcs without writing per-protocol drivers, publishing cnc machine state from fanuc and haas controls to an oee system over mqtt, bridging legacy serial modbus devices into an opc ua architecture during a phased controller replacement, running redundant collection servers so a cloud analytics pipeline does not lose data during windows patching. Of those, feeding a historian from a mixed plant of allen-bradley and siemens plcs without writing per-protocol drivers and publishing cnc machine state from fanuc and haas controls to an oee system over mqtt are not what Protolabs is typically brought in for.
What can Kepware Server do that Protolabs cannot?
Kepware Server covers 150-plus device drivers, OPC UA server, IoT Gateway, DataLogger. Protolabs covers Instant CAD quoting, Automated DFM feedback, CNC machining, Injection moulding.

Answered from the vendors’ own pages

Kepware Server: Is KEPServerEX discontinued?

The name is. KEPServerEX and ThingWorx Kepware Server have been unified into Kepware Server, currently version 7, and the older names are being retired.

Protolabs: Is Protolabs software or a service?

A service. The online quoting platform is free software wrapped around a parts business; you cannot licence the platform on its own.

Kepware Server: Is a perpetual licence still available?

Yes for the Windows server, with annual maintenance. Kepware Edge on Linux is subscription-only.

Protolabs: What does the quoting platform cost?

Nothing. You pay only for parts you order.

Kepware Server: What drives the price?

The number and type of driver suites, not the number of tags on the Windows product. Kepware Edge is priced by tag count.

Protolabs: Is there a minimum order?

No minimum order quantity, including injection moulding, where a single-cavity aluminium tool can produce a handful of parts.

Kepware Server: Can I evaluate it before buying?

Yes. The runtime works for two hours at a time without a licence, indefinitely, which is enough to prove connectivity but not to run production.

Protolabs: When should I stop using Protolabs?

Once volumes are stable and in the thousands. At that point hard tooling with a conventional moulder or a job shop is materially cheaper per part.

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