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draw.io (diagrams.net) vs ER/Studio

draw.io (diagrams.net) lands on Worth it, and ER/Studio lands on Depends.

ER/Studio

erstudio.com

Depends
Confidence: Medium

ER/Studio fits enterprise data architecture teams governing large, multi-database estates with budget for admins and training.

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draw.io (diagrams.net) versus ER/Studio
Comparedraw.io (diagrams.net)ER/Studio
VerdictWorth itDepends
Best forEngineers drawing UML and flowchartsEnterprise data architecture teams
Who it's not forEnterprise architects needing object metadata and model governanceSolo developers and startups . costly overkill
PrivacySecurity-first: data stays local or in your Atlassian instance; two XSS CVEs documented, latest patched in v29.7.12.⁸No known public vulnerabilities found in the sources reviewed.
Support qualityNo support evidence foundNo support evidence in sources
Public sentimentUsers call it a free, easy Visio alternative; complaints focus on business-use limits and thin metadata support.⁴Enterprise modelers praise the modeling depth, but ratings are middling and community feedback is thin.12
Biggest gotchaCVE-2026-46642 XSS flaw; update to v29.7.12 or later⁸Expect sales negotiation before seeing any price; costs scale with repository and team editions14

Pick draw.io (diagrams.net) when

  • Engineers drawing UML and flowcharts
  • Privacy-sensitive orgs (data stays local)
  • Confluence/Jira teams
  • Zero-budget teams

When draw.io (diagrams.net) is not a fit

  • Enterprise architects needing object metadata and model governance
  • Teams wanting AI-assisted whiteboarding
  • Data-modeling teams needing deep ER tooling
  • Buyers requiring vendor support SLAs. none documented

Pick ER/Studio when

  • Enterprise data architecture teams
  • Financial services data governance
  • Large multi-database estates
  • PowerDesigner/erwin migrants

When ER/Studio is not a fit

  • Solo developers and startups . costly overkill
  • Quick-and-dirty ER diagramming . use Visio
  • Teams without a dedicated data architect
  • Buyers wanting transparent, self-serve pricing

Sources

  1. Security-first diagramming for teams | draw.iodrawio.com
    official
  2. Your diagram data is secure and private with draw.iodrawio.com
    official
  3. Pricing - draw.iodrawio-app.com
    official
  4. draw.io Reviews from Real Users - TrustRadiustrustradius.com
    review
  5. Draw.io Reviews - G2g2.com
    review
  6. Draw.io Review - PCMagpcmag.com
    review
  7. Using draw.io, thoughts? - Redditreddit.com
    review
  8. CVE-2026-46642 Detail - NVDnvd.nist.gov
    security
  9. CVE-2026-46642: draw.io XSS Vulnerability - SentinelOnesentinelone.com
    security
  10. CVE-2022-1575 Stored XSS - GitHubgithub.com
    security
  11. Uncovering the Limitations of Draw.io for Business Use - LinkedInlinkedin.com
    review
  12. ER/Studio Data Architect Reviews . Gartnergartner.com
    review
  13. ER/Studio . 7wData7wdata.be
    review
  14. ER/Studio Pricing 2026 . TrustRadiustrustradius.com
    review
  15. Buy ER/Studio online . Idera Storestore.idera.com
    official
  16. Support for All Major Databases and Platformserstudio.com
    official