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Comparison

Admidio vs G2

Admidio 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.

Read the full report

Admidio versus G2
CompareAdmidioG2
VerdictDependsDepends
Best forVolunteer-run clubs and associationsB2B software buyers shortlisting tools
Who it's not forOrgs needing built-in dues and payment processingVendors without five-figure budgets
PrivacyMultiple 2026 CVEs, including remote code execution . keep patched to the latest release.⁶No public security page found; UpGuard reports no phishing; G2's own DPA references a past data breach.
Support qualityCommunity forum only; no quality evidenceTrustpilot and BBB complaints about G2's service
Public sentimentUsers find member and group management easy but consistently flag the missing payment and dues features.⁴Buyers 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 gotchaCVE-2026-32756 is a remote code execution vulnerability; patch immediately if internet-exposed⁶Vendor contracts are negotiated and opaque; budget five figures annually before committing.

Pick Admidio when

  • Volunteer-run clubs and associations
  • Small nonprofits tracking member lists
  • Teams with someone to self-host
  • Groups needing roles and subgroups

When Admidio is not a fit

  • Orgs needing built-in dues and payment processing
  • Non-technical groups with nobody to run a server
  • Large associations needing full AMS features
  • Anyone expecting vendor support or SLAs

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. Admidio official siteadmidio.org
    official
  2. Admidio on GitHubgithub.com
    official
  3. Admidio . Capterra listingcapterra.com
    review
  4. Membership Management Software Advice . Reddit r/selfhostedreddit.com
    review
  5. Mitgliederverwaltung discussion . Reddit r/Austriareddit.com
    review
  6. CVE-2026-32756: Admidio RCE Vulnerability . SentinelOnesentinelone.com
    security
  7. CVE-2026-82658 . CVE Recordcve.org
    security
  8. CVE-2026-47226 . Snyksecurity.snyk.io
    security
  9. Top Admidio Alternatives . G2g2.com
    review
  10. Free Membership Management Software . PayBeew.paybee.io
    review
  11. Membership fee forum thread . Admidio Forumadmidio.org
    official
  12. Admidio Hosting . Rad Web Hostingradwebhosting.com
    news
  13. G2 (company) . Wikipediaen.wikipedia.org
    news
  14. G2 . product siteg2.com
    official
  15. Sell G2 . Planssell.g2.com
    official
  16. Sell G2 . Review Generationsell.g2.com
    official