Clinical trial management software: AI search visibility ranking (2026)
How AI search engines rank clinical trial management software by visibility and citations. 20 brands measured monthly across Google AI Mode: which brands the AI names in answers, which domains it cites as sources, and how the leaders compare. Clinical trial management software used to plan studies, coordinate sites, manage documents, track milestones, and improve research operations. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
Refreshed Jun 13, 2026Download this ranking as a PDF
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At a glance
What we observed in this categoryauto-generated
OpenClinica holds the top rank in AI visibility for clinical trial management software with a 25.0% visibility score, more than double the 12.5% shared by four other brands. Despite this lead, its citation rate is 0.0%, meaning Google AI Mode names it frequently but does not link back to its domain. This gap between being named and being cited is commercially significant: buyers following AI-generated links will not be directed to openclinica.com, limiting downstream traffic despite strong brand mention presence.
SimpleTrials presents the sharpest divergence between visibility and citation in this category. Its visibility of 12.5% matches peers like Veeva Vault CTMS and Medidata, but its citation rate of 25.0% is the highest of any brand audited, giving it the second-highest composite score of 16.2. Oracle Siebel CTMS and IQVIA both sit at 12.5% visibility with 0.0% citation, mirroring OpenClinica's named-but-not-linked pattern. RealTime CTMS shows the inverse: 0.0% visibility but 12.5% citation, meaning AI cites its domain without naming the brand in responses.
Google AI Mode is the top engine for every brand in this dataset, indicating no meaningful differentiation by engine at this stage of the audit. The most cited external sources include reddit.com, g2.com, and advarra.com alongside vendor-owned domains like simpletrials.com, medidata.com, and veeva.com. The presence of reddit.com and g2.com at the top of the source list suggests AI responses in this category anchor heavily on peer review and community discussion content rather than vendor or publisher authority alone.
Movers & shakers since last refresh
Biggest visibility risers
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OpenClinica 0% → 25% · rank #0 → #1+25pp
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SimpleTrials 0% → 12% · rank #0 → #2+12pp
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Veeva Vault CTMS 0% → 12% · rank #0 → #3+12pp
The ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
openclinica.com
|
25% | 0% | Google AI Mode |
OpenClinica leads with 25.0% visibility, nearly six times the 4.4% category average, but its 0.0% citation rate means AI responses name it without linking to its domain. |
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| 2 |
simpletrials.com
|
12% | 25% | Google AI Mode |
SimpleTrials holds the highest citation rate in the category at 25.0%, outpacing its 12.5% visibility score and giving it a composite score second only to OpenClinica. |
||||
| 3 |
veeva.com
|
12% | 12% | Google AI Mode |
Veeva Vault CTMS matches peers at 12.5% visibility and 12.5% citation, placing it among a cluster of brands sharing identical scores at ranks 3 and 4. |
||||
| 4 |
medidata.com
|
12% | 12% | Google AI Mode |
Medidata mirrors Veeva exactly at 12.5% visibility and 12.5% citation, resulting in the same composite score of 12.5 and no differentiating AI footprint between the two. |
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| 5 |
oracle.com
|
12% | 0% | Google AI Mode |
Oracle Siebel CTMS reaches 12.5% visibility but earns 0.0% citation, placing its composite score at 8.8, below peers with equivalent visibility but active citation rates. |
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| 6 |
iqvia.com
|
12% | 0% | Google AI Mode |
| 7 |
realtime-eclinical.com
|
0% | 12% | Google AI Mode |
| 8 |
castoredc.com
|
0% | 0% | Google AI Mode |
| 9 |
florencehc.com
|
0% | 0% | Google AI Mode |
| 10 |
mastercontrol.com
|
0% | 0% | Google AI Mode |
| 11 |
clario.com
|
0% | 0% | Google AI Mode |
| 12 |
medrio.com
|
0% | 0% | Google AI Mode |
| 13 |
anju.io
|
0% | 0% | Google AI Mode |
| 14 |
edge.com
|
0% | 0% | Google AI Mode |
| 15 |
adalys.com
|
0% | 0% | Google AI Mode |
| 16 |
ibm.com
|
0% | 0% | Google AI Mode |
| 17 |
datatrak.com
|
0% | 0% | Google AI Mode |
| 18 |
crucialdatasolutions.com
|
0% | 0% | Google AI Mode |
| 19 |
bio-optronics.com
|
0% | 0% | Google AI Mode |
| 20 |
greenlight.guru
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on clinical trial management software, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.
How to read this ranking
Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.
Visibility = being named
A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer.
Citation rate = being trusted
Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence — different from being named.
Top engine differs by brand
The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps.
Rankings move month to month
AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 30 days and refresh this page automatically.
Get your own clinical trial management software brand audited
The brands above were curated from public market-leader lists. Want the same measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.
Frequently asked about clinical trial management software AI visibility
Who leads AI visibility in clinical trial management software?
OpenClinica leads with 25.0% visibility, more than double the 12.5% held by the next group of brands including Veeva Vault CTMS, Medidata, SimpleTrials, and Oracle Siebel CTMS.
Which brand is cited most often by Google AI Mode in this category?
SimpleTrials has the highest citation rate at 25.0%, ahead of Veeva Vault CTMS and Medidata at 12.5%, and well above OpenClinica which has 0.0% despite its top visibility rank.
What sources does AI cite most for clinical trial management software research?
The top cited sources include reddit.com, g2.com, and advarra.com, alongside vendor-owned domains like simpletrials.com, medidata.com, and veeva.com, suggesting AI anchors on peer review and community content as well as vendor pages.
Are there brands that appear in AI citations but not in AI-named responses?
Yes, RealTime CTMS has 0.0% visibility but 12.5% citation, meaning Google AI Mode links to its domain without naming it directly in generated responses.
How does the category average compare to the top-ranked brand?
The category average visibility is 4.4%, while OpenClinica sits at 25.0%, representing a gap of over 20 percentage points between the leader and the field average across 20 brands.
Which engine dominates AI visibility for clinical trial management software brands?
Google AI Mode is listed as the top engine for every brand in the audit, with no other engine appearing in the data, indicating the entire category's AI footprint is currently concentrated on one platform.