Honest comparison

OpenVPM vs Cornerstone

Cornerstone is a deep, mature hospital system. OpenVPM is an open-source controlled-pilot option with a narrower workflow and integration surface.

Workspace access is immediate. Live clinic use starts as a guided pilot alongside the current PIMS. See current fit and rollout limits.

Cornerstone, from IDEXX, is one of the most established practice management systems in the industry, with tight integration to IDEXX labs and imaging and a feature set built over decades. It has long been server-installed, and IDEXX has added a hosted Cornerstone Cloud option more recently. OpenVPM takes a different path: public code and schema, plus a targeted API and selected core workflows for controlled, connected single-location pilots. It does not match Cornerstone's hospital depth or IDEXX diagnostic integrations today.

License
OpenVPM: Open source (AGPLv3)
Cornerstone: Proprietary, closed
Hosting
OpenVPM: Self-host or managed Cloud; connected use
Cornerstone: On-premise, with a newer cloud option
Pricing
OpenVPM: No self-hosted license fee. Cloud $79/location/mo
Cornerstone: Around $420 to $549/mo, publicly reported. IDEXX does not publish a rate card
Per-user fees
OpenVPM: None. Unlimited staff
Cornerstone: Not published
Open API
OpenVPM: Targeted REST API, scoped keys, signed webhooks
Cornerstone: Partner-gated (IDEXX Data Services)
Your data
OpenVPM: Public schema. Export anytime
Cornerstone: Proprietary format. Access through the vendor
Best for
OpenVPM: Controlled connected GP or house-call pilots
Cornerstone: Larger and specialty hospitals in the IDEXX ecosystem

Pricing for other systems is publicly reported by third parties, not official rate cards. We aim to be fair. If something here is out of date, tell us and we will fix it.

What about your data?

Cornerstone runs on a proprietary database, and getting records into another system usually means a vendor-assisted export or conversion. OpenVPM's reviewed self-service CSV path covers clients, patients, vaccination history, and visit notes. Appointments, invoices, attachments, and vendor-specific history require assisted scoping; there is no general live-sync connector.

Read: who owns your practice data

When Cornerstone is the better fit

If your hospital is built around IDEXX analyzers and reference labs and you want the deepest possible integration with them, Cornerstone is a reasonable fit.

When OpenVPM is the better fit

Consider OpenVPM only for a controlled, connected single-location companion-animal or house-call pilot whose required workflows and migration scope pass review. It is not a production replacement for Cornerstone's external diagnostics or specialty depth.

Use OpenVPM your way.

Self-host the full open-source PIMS for free, or let us run it for you. Same software, your choice.

FreeAGPLv3, forever

Run OpenVPM on your own infrastructure. You operate security, backups, email, messaging, payments, model providers, and production validation.

  • Full source under the AGPLv3 license
  • All source modules and the documented API
  • Docker or Vercel deployment paths
  • Bring your own database, email, SMS, and AI keys
Read the install guide

Common questions

Is OpenVPM a like-for-like alternative to Cornerstone?

No. OpenVPM is currently limited to controlled, connected single-location companion-animal and house-call pilots. It does not provide Cornerstone's mature specialty depth or IDEXX lab and imaging integrations.

Does Cornerstone publish its price?

No. IDEXX does not publish an official price. The figures you see online, around $420 to $549 per month, come from third-party listings like Capterra and should be treated as estimates.

Can I move my Cornerstone data to OpenVPM?

It depends on the export. OpenVPM's reviewed dry-run CSV path covers clients, patients, vaccination history, and visit notes. Appointments, invoices, attachments, imaging links, and vendor-specific history require assisted scoping. There is no general ongoing sync.

See OpenVPM for yourself.

The demo is live and loaded with real-looking data. No sales call. Click around, then self-host it free or let us run it for you.