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Comparison

OpenClinica vs G2

OpenClinica and G2 both land on Depends.

G2

g2.com

Depends
Confidence: Medium

Buyers shortlisting B2B software should use G2 free as one input, cross-checked against Capterra or TrustRadius.

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OpenClinica versus G2
CompareOpenClinicaG2
VerdictDependsDepends
Best forSponsors and CROs running regulated trialsB2B software buyers shortlisting tools
Who it's not forSmall labs needing a quick simple databaseVendors without five-figure budgets
PrivacyISO 27001 certified, SOC 2 audited, MFA available . but two 2025 CVEs (XXE and a CVSS 8.8 path traversal) were disclosed.⁸No public security page found; UpGuard reports no phishing; G2's own DPA references a past data breach.15
Support qualityNo directional evidence found in sourcesTrustpilot and BBB complaints about G2's service
Public sentimentReviews are middling . a 3.6/5 aggregate over 61 reviews . with buyers most often comparing it head-to-head against Castor, Medrio, and Medidata.¹Buyers find G2 useful for breadth, but sentiment on G2's own service skews negative on Trustpilot and Redditors weigh it against Capterra and Trustpilot.
Biggest gotchaSelf-hosted Community Edition means you own patching, upgrades, and regulatory validation.⁴Vendor contracts are negotiated and opaque; budget five figures annually before committing.16

Pick OpenClinica when

  • Sponsors and CROs running regulated trials
  • Multi-centre academic studies
  • Government-adjacent research needing FedRAMP
  • Teams consolidating recruitment and EDC

When OpenClinica is not a fit

  • Small labs needing a quick simple database
  • Non-clinical surveys or registries
  • Teams without capacity for study build and validation
  • Buyers wanting self-serve transparent pricing

Pick G2 when

  • B2B software buyers shortlisting tools
  • Teams wanting peer reviews pre-demo
  • SaaS vendors building review-based social proof
  • Marketers using buyer-intent data

When G2 is not a fit

  • Vendors without five-figure budgets
  • Anyone expecting unbiased star ratings
  • Consumer-product shoppers . B2B only
  • Buyers wanting deep technical vetting

Sources

  1. OpenClinica Reviews on G2g2.com
    review
  2. OpenClinica vs Castor (RFP.wiki)rfp.wiki
    review
  3. OpenClinica Reviews on GetAppgetapp.ie
    review
  4. Reddit r/HealthInformatics database recommendationsreddit.com
    review
  5. OpenClinica Trust and Complianceopenclinica.com
    official
  6. OpenClinica FedRAMP for Clinical Researchopenclinica.com
    official
  7. CVE-2025-12922 Detail (NVD)nvd.nist.gov
    security
  8. CVE-2025-12921 OpenClinica XXE (SentinelOne)sentinelone.com
    security
  9. CVE-2025-12922 Path Traversal (Strix)strix.ai
    security
  10. Thompson Street Capital growth investment in OpenClinicatscp.com
    news
  11. G2 (company) . Wikipediaen.wikipedia.org
    news
  12. G2 . product siteg2.com
    official
  13. Sell G2 . Planssell.g2.com
    official
  14. Sell G2 . Review Generationsell.g2.com
    official
  15. G2 Data Processing Addendumlegal.g2.com
    official
  16. G2 Software Pricing . Vendrvendr.com
    news