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Manufacturing · head to head

Kepware Server vs Maintenance Connection

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
Maintenance Connection logo

Maintenance Connection

Manufacturing

Enterprise CMMS from Accruent for multi-site asset management

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.; Maintenance Connection implementation is a project measured in months, and the cost of that work frequently exceeds the first year of licensing
  • They diverge on capability: Kepware Server covers 150-plus device drivers, Maintenance Connection covers Deep asset hierarchies.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Kepware Server and Maintenance Connection actually diverge.

Attributes where Kepware Server and Maintenance Connection differ
AttributeKepware ServerMaintenance Connection
PlatformsWindows, LinuxWeb, iOS, Android

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 Maintenance Connection

  • Deep asset hierarchies
  • Labour and cost tracking
  • Multi-storeroom inventory
  • Preventive and predictive
  • Compliance reporting
  • Enterprise integration

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 Maintenance Connection
  • Publishing CNC machine state from FANUC and Haas controls to an OEE system over MQTTnot Maintenance Connection
  • Bridging legacy serial Modbus devices into an OPC UA architecture during a phased controller replacementnot Maintenance Connection
  • Running redundant collection servers so a cloud analytics pipeline does not lose data during Windows patchingnot Maintenance Connection

Maintenance Connection

  • Multi-site manufacturing or healthcare estates with large asset registersnot Kepware Server
  • Organisations that must evidence a maintenance regime to a regulatornot Kepware Server
  • Operations replacing an ageing enterprise CMMS rather than papernot Kepware Server
  • Estates needing maintenance integrated with ERP and financenot 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.

Maintenance Connection

  • Implementation is a project measured in months, and the cost of that work frequently exceeds the first year of licensing
  • Pricing is entirely quote-based with no published entry point, so early comparison is impossible
  • The interface reflects its age and is a common objection from technicians used to consumer-grade mobile apps
  • Overpowered for single-site operations, where the configuration burden buys capability that will not be used
  • Accruent sells a broad portfolio, so the buying process involves more product than a maintenance team asked for

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

Maintenance Connection

On request
  • Maintenance Connection$undefined/year
    • Work and asset management
    • Multi-site
    • Inventory

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 Maintenance Connection if

  • You need deep asset hierarchies.
  • You work on Web, iOS, Android.
  • You also want labour and cost tracking.
Maintenance Connection review

Questions people ask

Is Kepware Server or Maintenance Connection better?
Neither clearly leads. Kepware Server starts at On request and Maintenance Connection at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kepware Server or Maintenance Connection?
Kepware Server starts at On request and Maintenance Connection at On request.
Does Kepware Server or Maintenance Connection run on more platforms?
Kepware Server runs on Windows, Linux. Maintenance Connection runs on Web, iOS, Android.
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 Maintenance Connection is typically brought in for.
What can Kepware Server do that Maintenance Connection cannot?
Kepware Server covers 150-plus device drivers, OPC UA server, IoT Gateway, DataLogger. Maintenance Connection covers Deep asset hierarchies, Labour and cost tracking, Multi-storeroom inventory, Preventive and predictive.

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.

Maintenance Connection: Who is Maintenance Connection for?

Multi-site organisations with large asset registers and formal maintenance governance. Below that scale, the configuration effort is not repaid.

Kepware Server: Is a perpetual licence still available?

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

Maintenance Connection: What does it cost?

Not published. It is quoted, and implementation is a separate line that often exceeds first-year licensing.

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.

Maintenance Connection: How does it differ from MaintainX?

Almost entirely. This is an enterprise system configured to enforce an existing process; MaintainX is a mobile app a team adopts in a day. They rarely appear on the same shortlist honestly.

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.

Maintenance Connection: Is it good for regulated industries?

That is its strongest case. Audit trails, evidence of preventive regimes and multi-site consistency are what it is built to produce.

Maintenance Connection: What is the biggest risk in adopting it?

Under-resourcing implementation. A partially configured enterprise CMMS is worse than a well-run simple one, and this is the most common way these projects disappoint.

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