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Healthcare · head to head

OpenClinica vs Zocdoc

OpenClinica logo

OpenClinica

Healthcare

Clinical trial EDC with a genuinely open source community edition alongside a quoted commercial platform

From
On request
Rated
-
Full reviewWebsite
Zocdoc logo

Zocdoc

Healthcare

Find and book doctors instantly online

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Zocdoc has a free tier, so it costs nothing to try first.
  • Each has a real cost: OpenClinica the free community edition is a different and older product line from the commercial platform, so evaluating the open source build tells you little about what the paid product actually does.; Zocdoc doctors can cancel appointments with little notice
  • They diverge on capability: OpenClinica covers Open source community edition, Zocdoc covers Doctor Search.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which OpenClinica and Zocdoc actually diverge.

Attributes where OpenClinica and Zocdoc differ
AttributeOpenClinicaZocdoc
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWeb, Self-hosted, iOS, AndroidWeb, iOS, Android
FoundedUnknown2007

Identical on both: user rating (Not yet rated), category (Healthcare).

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 OpenClinica

  • Open source community edition
  • Electronic data capture
  • eConsent
  • eCOA and ePRO
  • Randomisation
  • EHR-to-EDC
  • Audit trail
  • Reporting and analytics

Only in Zocdoc

  • Doctor Search
  • Online Booking
  • Reviews
  • Insurance Verification
  • Reminders
  • Telehealth
  • Practice Management Systems
  • EHRs

What people use each for

The jobs each tool is most often brought in to do.

OpenClinica

  • An academic coordinating centre running investigator-initiated trials that needs Part 11 compliant capture without an enterprise eClinical budgetnot Zocdoc
  • A registry or observational cohort study collecting structured data across many sites over yearsnot Zocdoc
  • A small device sponsor that needs eConsent and ePRO in the same system as its case report formsnot Zocdoc
  • An informatics group that wants to self-host the open source edition for a non-regulated internal studynot Zocdoc

Zocdoc

  • Patient Carenot OpenClinica
  • Medical Recordsnot OpenClinica
  • Practice Managementnot OpenClinica
  • Telehealthnot OpenClinica

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

OpenClinica

  • The free community edition is a different and older product line from the commercial platform, so evaluating the open source build tells you little about what the paid product actually does.
  • The vendor provides no support or services at all for the community edition, which means outages, patching, database upgrades and validation documentation are entirely your problem.
  • Commercial pricing is not published, so you cannot benchmark it against alternatives without entering a sales process, and third-party figures around USD 1,000 a month are indicative rather than contractual.
  • Study build is skilled work: complex edit checks, randomisation schemes and integrations usually mean paying for vendor or consultant configuration services on top of the licence, which is a frequently underestimated line in the budget.
  • As a smaller vendor than the large eClinical suites it has a thinner partner and consultant ecosystem, so finding experienced build staff or a CRO already fluent in the platform is harder than with the market incumbents.

Zocdoc

  • Doctors can cancel appointments with little notice
  • No direct messaging between patients and providers outside of appointment booking
  • Providers incur booking fees even if patients no-show or cancel after 24 hours

Pricing, plan by plan

OpenClinica

On request
  • Community Edition$undefined/year
    • Free and open source under the LGPL
    • Self-hosted, on the older 3.x line
    • No vendor support or services of any kind
  • OpenClinica Enterprise$undefined/year
    • Pricing only through a sales process
    • Hosted and validated instance
    • EDC, eConsent, eCOA, randomisation and analytics modules

Zocdoc

Free
  • PatientFree
    • Find doctors
    • Book appointments
    • Read reviews

Which should you pick?

Choose OpenClinica if

  • You need open source community edition.
  • You work on Web, Self-hosted, iOS, Android.
  • You also want electronic data capture.
OpenClinica review

Choose Zocdoc if

  • You need doctor search.
  • You want to start without paying.
  • You work on Web, iOS, Android.
  • You also want online booking.
Zocdoc review

Questions people ask

Is OpenClinica or Zocdoc better?
Neither clearly leads. OpenClinica starts at On request and Zocdoc at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OpenClinica or Zocdoc?
Zocdoc has a free tier; the other does not. Paid plans start at On request for OpenClinica and Free for Zocdoc.
Does OpenClinica or Zocdoc run on more platforms?
OpenClinica runs on Web, Self-hosted, iOS, Android. Zocdoc runs on Web, iOS, Android.
Can I use Zocdoc for free?
Yes. Zocdoc has a free tier, so you can try it without paying. OpenClinica starts at On request.
What is OpenClinica best used for?
OpenClinica is most often used for an academic coordinating centre running investigator-initiated trials that needs part 11 compliant capture without an enterprise eclinical budget, a registry or observational cohort study collecting structured data across many sites over years, a small device sponsor that needs econsent and epro in the same system as its case report forms, an informatics group that wants to self-host the open source edition for a non-regulated internal study. Of those, an academic coordinating centre running investigator-initiated trials that needs part 11 compliant capture without an enterprise eclinical budget and a registry or observational cohort study collecting structured data across many sites over years are not what Zocdoc is typically brought in for.
What can OpenClinica do that Zocdoc cannot?
OpenClinica covers Open source community edition, Electronic data capture, eConsent, eCOA and ePRO. Zocdoc covers Doctor Search, Online Booking, Reviews, Insurance Verification.

Answered from the vendors’ own pages

OpenClinica: Is OpenClinica free?

There is a genuinely free, LGPL licensed community edition you host yourself with no vendor support. The commercial platform with eConsent, eCOA and a validated hosted instance is quoted and paid.

Zocdoc: Is Zocdoc free for patients?

Yes, searching for and booking appointments on Zocdoc is completely free for patients. There are no search fees, booking fees, or cancellation fees. Patients only pay their insurance copay or self-pay rate for the actual care.

Source
OpenClinica: Is the open source version still maintained?

Yes, releases on the 3.x line continued through 2025, but it is a separate and older architecture from the commercial product.

Zocdoc: Does Zocdoc verify that doctors accept my insurance?

Zocdoc supports over 1,000 insurance plans and filters results to show only providers who accept your specific plan. However, Zocdoc cannot guarantee in-network status, as plans with similar names can differ by employer group or region. Final verification is always confirmed by your insurer and the provider's office.

Source
OpenClinica: Does it meet 21 CFR Part 11?

The commercial hosted platform is built for Part 11 and GCP compliance. If you self-host the community edition, compliance and validation are entirely your responsibility.

Zocdoc: What specialties and types of providers does Zocdoc cover?

Zocdoc features a network of over 250,000 providers across 200+ specialties, including primary care physicians, dentists, OB-GYNs, dermatologists, psychiatrists, eye doctors, orthopedic surgeons, and therapists.

Source
OpenClinica: What does the commercial version cost?

Not published. Third-party listings suggest enterprise arrangements from around USD 1,000 per month, but real cost depends on study count, subjects, modules and build services.

Zocdoc: How much do providers pay to use Zocdoc?

Zocdoc charges healthcare providers a one-time booking fee per new patient, with pricing varying by specialty and local market. The exact fee is quoted individually to practices.

Source
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