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Head-to-head · Manufacturing Execution Systems

Siemens Opcenter vs OpenMES

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score Siemens Opcenter #1 in Manufacturing Execution Systems 9.4/10 Pricing on request · 30-day trial Free trial✓ 6 of 6 features Explore Opcenter
OpenMES #18 in Manufacturing Execution Systems 7.2/10 Free plan Free plan✓ 6 of 6 features Visit OpenMES

Siemens Opcenter leads on 0 checks, OpenMES on 0, and 7 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSiemens Opcenter · 9.4/10
  • Free planonly OpenMES
  • Free trialonly Siemens Opcenter

Siemens Opcenter scores higher on our rubric for manufacturing execution systems: 9.4 against 7.2 out of 10; our editors rank them #1 and #18.

Siemens Opcenter is the better fit for enterprise manufacturers needing broad MES coverage. OpenMES is the better fit for budget-conscious teams wanting open-source MES.

  • Siemens Opcenter fits best

    Enterprise manufacturers needing broad MES coverage

  • OpenMES fits best

    Budget-conscious teams wanting open-source MES

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Siemens Opcenter 9.4/10 Visit ↗ OpenMES 7.2/10 Visit ↗
At a glance
Editor score 9.4 7.2
Ranking #1 in Manufacturing Execution Systems #18 in Manufacturing Execution Systems
Best for Enterprise manufacturers needing broad MES coverage Budget-conscious teams wanting open-source MES
Pricing model Paid Free
Starting price Pricing on request · 30-day trial Free plan
Free plan Not checked yet ✓ (best)
Free trial 30 days —
Deployment Cloud, Self-hosted Cloud, Self-hosted
Platforms Web Web
Support Phone, Tickets, Community, Docs Email, Docs
Integrations 6 integrations 10 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Siemens Opcenter 6/6 · OpenMES 6/6
Work order management ✓ ✓
Quality management ✓ ✓
Lot and serial traceability ✓ ✓
Shop-floor data capture ✓ ✓
Real-time dashboards ✓ ✓
ERP integration ✓ ✓
Specs
Deployment Hybrid Hybrid
Our review
Pros
  • Covers execution, quality, traceability, scheduling, and shop-floor data capture
  • Connects with ERP, PLM, CMMS, machines, and shop-floor systems
  • Supports web and self-hosted deployment with a 30-day Opcenter X trial
  • Covers work orders, scheduling, OEE, quality, and traceability
  • Connects with MQTT, Modbus, OPC UA, REST APIs, ERP, and SCADA
  • Supports self-hosted deployment under the AGPL-3.0 license
Cons
  • Contact-sales pricing makes direct cost comparison harder
  • The 30-day trial applies specifically to Opcenter X
  • Its portfolio structure may require careful product selection
  • Self-hosting may require internal technical ownership
  • Enterprise modules and services are separate from the community edition
  • OpenMES Online is described as coming soon
Our verdict

Siemens Opcenter is a manufacturing operations management portfolio for manufacturers that need more than production tracking alone. It combines manufacturing execution, quality management, production planning and scheduling, manufacturing…

Read the review →

OpenMES is a web-based, open-source manufacturing execution system for small, mid-sized, and larger manufacturers. It brings together work-order lifecycle tracking, visual scheduling, shop-floor execution, quality checks, lot and serial…

Read the review →
  1. Siemens OpcenterManufacturing Execution Systems 9.4Pricing on request · 30-day trial
  2. OpenMESManufacturing Execution Systems 7.2Free plan

Strengths and trade-offs

  • Siemens Opcenter — where it wins

    • Covers execution, quality, traceability, scheduling, and shop-floor data capture
    • Connects with ERP, PLM, CMMS, machines, and shop-floor systems
    • Supports web and self-hosted deployment with a 30-day Opcenter X trial

    Where it doesn't

    • Contact-sales pricing makes direct cost comparison harder
    • The 30-day trial applies specifically to Opcenter X
    • Its portfolio structure may require careful product selection

  • OpenMES — where it wins

    • Covers work orders, scheduling, OEE, quality, and traceability
    • Connects with MQTT, Modbus, OPC UA, REST APIs, ERP, and SCADA
    • Supports self-hosted deployment under the AGPL-3.0 license

    Where it doesn't

    • Self-hosting may require internal technical ownership
    • Enterprise modules and services are separate from the community edition
    • OpenMES Online is described as coming soon
  • Siemens Opcenter9.4/10 · Pricing on request · 30-day trial

    A broad MES portfolio for manufacturers that need execution, quality, traceability, and planning.

    Explore OpcenterFull verdict →
  • OpenMES7.2/10 · Free plan

    A broad open-source MES for teams that need production, quality, traceability, and connectivity.

    Visit OpenMESFull verdict →

More comparisons

All manufacturing execution systems comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update