Transparent pricing. No surprises.
Every Saturnis product ships as fully-functional open-source software. Upgrade to Pro or Enterprise when you need proprietary rights, enterprise integrations, or dedicated support.
Cassini Open
AGPL v3
Free
- ▷Full source code (AGPL v3)
- ▷Control charts (X-bar, R, S, I-MR, CUSUM, EWMA)
- ▷Attribute charts (p, np, c, u) with Laney correction
- ▷Capability analysis (Cp, Cpk, Pp, Ppk, Cpm)
- ▷All 8 Nelson rules + short-run SPC
- ▷Show Your Work (computation transparency)
- ▷Manual data entry + CSV/Excel import
- ▷1 MQTT / Sparkplug B broker
- ▷Dashboard, kiosk mode, PWA
- ▷Audit trail + RBAC (4 roles)
- ▷Single plant, SQLite database
- ▷Community support via GitHub
Cassini Pro
$1,200 / plant / yr
Billed annually. Includes all Pro features.
- ▷Everything in Open, plus:
- ▷Proprietary license (no AGPL)
- ▷Multi-plant management
- ▷PostgreSQL, MySQL, MSSQL
- ▷OPC-UA connectivity (read-only)
- ▷Unlimited MQTT connections
- ▷MSA / Gage R&R (ANOVA, nested, attribute)
- ▷DOE (Design of Experiments)
- ▷Non-normal distribution fitting
- ▷Ishikawa root cause + correlation
- ▷Scheduled reporting (email delivery)
- ▷API keys + push notifications
- ▷Standard support (email, 48hr)
Cassini Enterprise
Proprietary
$5,000 / plant / yr
Billed annually. Includes all Enterprise features.
- ▷Everything in Pro, plus:
- ▷RS-232 / USB gage bridge
- ▷Electronic signatures (21 CFR Part 11)
- ▷First Article Inspection (AS9102)
- ▷Multivariate SPC (T², MEWMA)
- ▷Anomaly detection (ML-powered)
- ▷Predictive analytics (ARIMA)
- ▷AI-powered analysis (LLM)
- ▷SSO / OIDC federation
- ▷ERP/MES connectors (SAP, Oracle)
- ▷Data retention policies
- ▷Async SPC (175K samples/min)
- ▷Dedicated support with SLA
Side by side
| Feature | Open | Pro | Enterprise |
|---|---|---|---|
| SPC Engine | |||
| Control charts (X-bar, R, S, p, np, c, u, CUSUM, EWMA) | ✓ | ✓ | ✓ |
| Capability analysis (Cp, Cpk, Pp, Ppk, Cpm) | ✓ | ✓ | ✓ |
| Nelson / WECO / AIAG run rules | ✓ | ✓ | ✓ |
| Short-run SPC (deviation + Z-score) | ✓ | ✓ | ✓ |
| Show Your Work (computation transparency) | ✓ | ✓ | ✓ |
| Non-normal distribution fitting | — | ✓ | ✓ |
| Run rule preset management | — | ✓ | ✓ |
| Data | |||
| Manual data entry | ✓ | ✓ | ✓ |
| MQTT / Sparkplug B connectivity | 1 broker | Unlimited | Unlimited |
| OPC-UA connectivity | — | ✓ | ✓ |
| RS-232 / USB gage bridge | — | — | ✓ |
| Bulk import throughput | Up to 200K samples/min | Up to 200K samples/min | Up to 200K samples/min |
| Throughput with SPC rules | ~26K/min (sync) | ~26K/min (sync) | Up to 175K/min (async) |
| ISA-95 plant hierarchy | Single plant | Multi-plant | Multi-plant |
| Quality Systems | |||
| MSA / Gage R&R | — | ✓ | ✓ |
| DOE (Design of Experiments) | — | ✓ | ✓ |
| First Article Inspection (AS9102) | — | — | ✓ |
| Electronic signatures (21 CFR Part 11) | — | — | ✓ |
| Analytics & Reporting | |||
| Dashboard & violation tracking | ✓ | ✓ | ✓ |
| Ishikawa root cause diagrams | — | ✓ | ✓ |
| Scheduled reporting (email delivery) | — | ✓ | ✓ |
| Anomaly detection (ML) | — | — | ✓ |
| Multivariate SPC (T-squared, MEWMA) | — | — | ✓ |
| AI-powered analysis | — | — | ✓ |
| Predictive analytics | — | — | ✓ |
| Administration | |||
| User management & RBAC | ✓ | ✓ | ✓ |
| Audit trail | ✓ | ✓ | ✓ |
| Push notifications | — | ✓ | ✓ |
| SSO / OIDC | — | — | ✓ |
| Data retention policies | — | — | ✓ |
| ERP / MES integration | — | — | ✓ |
| Infrastructure | |||
| Database | SQLite | PostgreSQL, MSSQL, MySQL | PostgreSQL, MSSQL, MySQL |
| REST API | ✓ | ✓ | ✓ |
| Source code access | ✓ | ✓ | ✓ |
| Modification rights | AGPL (share-alike) | Proprietary | Proprietary |
| Support | Community (GitHub) | Standard (email, 48hr) | Dedicated with SLA |
| Updates | Community releases | Priority releases | Priority releases |
Common questions
Can I use Cassini Open in production?
Yes. Cassini Open is fully functional production software, not a trial or demo. The only restriction is the AGPL license: if you distribute modified versions, those modifications must also be open source.
What happens if my license expires?
Your Cassini deployment continues to work — we never kill a running system. You lose access to priority support, updates, and tier-specific features. You can always fall back to Cassini Open.
Do I need a license for development or testing?
No. Cassini Open covers development, testing, and evaluation. You only need a Pro or Enterprise license when you want commercial features, proprietary modification rights, or dedicated support in production.
How does the AGPL affect my company?
The AGPL requires that if you modify Cassini and provide it as a service (even internally over a network), you must make your modifications available under the AGPL. A Pro or Enterprise license removes this requirement, letting you keep modifications private.
What databases are supported?
Cassini Open uses SQLite — zero-config, file-based, and production-capable for single-plant deployments. Pro and Enterprise licenses add PostgreSQL, MySQL, and MSSQL support for enterprise environments. You can switch databases at any time.
Can I connect shop floor equipment directly?
Cassini Open includes MQTT / Sparkplug B connectivity for one broker. Pro adds OPC-UA support and unlimited MQTT connections. Enterprise adds RS-232/USB gage bridge for direct measurement tool connectivity.