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Head-to-head · SPC Software

SigmaDesk vs SAS/QC

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score SigmaDesk #5 in SPC Software 8.3/10 Free plan Free plan✓ 4 of 5 features Visit SigmaDesk
SAS/QC #6 in SPC Software 8.1/10 Pricing on request ✓ 2 of 5 features Visit SAS/QC

SigmaDesk leads on 1 check, SAS/QC on 0, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSigmaDesk · 8.3/10
  • Free planonly SigmaDesk
  • Most featuresSigmaDesk · 4 of 5

SigmaDesk scores higher on our rubric for spc software: 8.3 against 8.1 out of 10; our editors rank them #5 and #6.

SigmaDesk offers free plan; SAS/QC doesn't. On deployment model, SAS/QC gives you Hybrid where SigmaDesk offers Cloud.

SigmaDesk is the better fit for individuals and small teams wanting free SPC. SAS/QC is the better fit for mid-market and enterprise quality teams.

  • SigmaDesk fits best

    Individuals and small teams wanting free SPC

  • SAS/QC fits best

    Mid-market and enterprise quality teams

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 SigmaDesk 8.3/10 Visit ↗ SAS/QC 8.1/10 Visit ↗
At a glance
Editor score 8.3 8.1
Ranking #5 in SPC Software #6 in SPC Software
Best for Individuals and small teams wanting free SPC Mid-market and enterprise quality teams
Pricing model Free Paid
Starting price Free Pricing on request
Free plan ✓ (best) —
Free trial — —
Deployment Cloud Cloud, Self-hosted
Platforms Web Windows, Linux
Built for Solo, Small business, Mid-market Mid-market, Enterprise
Features SigmaDesk 4/5 · SAS/QC 2/5
Process capability analysis ✓ ✓
Gage R&R / MSA ✓ ✓
Real-time monitoring ✓ (best) Not checked yet
Rule-based alerts ✓ (best) Not checked yet
API access Not checked yet Not checked yet
Specs
Data collection mode Manual Not checked yet
Deployment model Cloud Hybrid
Our review
Pros
  • Covers variable and attribute control charts across common chart types
  • Includes Cp, Cpk, Pp, Ppk and ANOVA-based Gage R&R analysis
  • Offers violation detection, dashboards, sharing and PDF report export
  • Offers Shewhart, cumulative sum, and moving average control charts
  • Combines capability analysis with GAGE repeatability and reproducibility evaluation
  • Includes multivariate monitoring, reliability analysis, and design of experiments
Cons
  • Measurement data must be entered or pasted manually
  • Saving studies and collaboration require a signed-in account
  • Web-only deployment may not suit offline or local-install workflows
  • Pricing is available by sales contact rather than a published price
  • Its broad statistical scope may exceed teams seeking basic SPC charts
  • Deployment choices span cloud and self-hosted environments, requiring a fit decision
Our verdict

SigmaDesk is browser-based statistical process control software for quality engineers and manufacturing teams. It supports manual entry or pasted measurement data, interactive chart recalculation, and study management through an account.…

Read the review →

SAS/QC is statistical quality control software for process and manufacturing engineers and quality improvement teams. Its scope suits mid-market and enterprise teams that need more than basic SPC charts, including advanced process analysis…

Read the review →
  1. SigmaDeskSPC Software 8.3Free plan
  2. SAS/QCSPC Software 8.1Pricing on request

Strengths and trade-offs

  • SigmaDesk — where it wins

    • Covers variable and attribute control charts across common chart types
    • Includes Cp, Cpk, Pp, Ppk and ANOVA-based Gage R&R analysis
    • Offers violation detection, dashboards, sharing and PDF report export

    Where it doesn't

    • Measurement data must be entered or pasted manually
    • Saving studies and collaboration require a signed-in account
    • Web-only deployment may not suit offline or local-install workflows

  • SAS/QC — where it wins

    • Offers Shewhart, cumulative sum, and moving average control charts
    • Combines capability analysis with GAGE repeatability and reproducibility evaluation
    • Includes multivariate monitoring, reliability analysis, and design of experiments

    Where it doesn't

    • Pricing is available by sales contact rather than a published price
    • Its broad statistical scope may exceed teams seeking basic SPC charts
    • Deployment choices span cloud and self-hosted environments, requiring a fit decision
  • SigmaDesk8.3/10 · Free plan

    Free, browser-based SPC with broad charting, capability, Gage R&R and reporting tools.

    Visit SigmaDeskFull verdict →
  • SAS/QC8.1/10 · Pricing on request

    Advanced quality analysis spanning control charts, capability, GAGE, reliability, and DOE.

    Visit SAS/QCFull verdict →

More comparisons

All SPC software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update