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Best ClinicalTrials.gov Alternatives ranked by AI · updated Aug 2026
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ClinicalTrials.gov is a publicly accessible registry and results database for clinical studies worldwide. It serves patients, researchers, clinicians, and sponsors, offering extensive study records and structured eligibility information.
Top 6 ClinicalTrials.gov alternatives
Trials.ai is an online clinical-trial discovery and matching service for patients and caregivers. It uses structured patient information and trial data to...
Pros
- Uses patient-specific information rather than relying only on keyword searches
- Reduces the time needed to screen clinical-trial eligibility
- Focused interface for patients and caregivers rather than research professionals
Cons
- Coverage may be narrower than the government ClinicalTrials.gov registry
- A potential match does not confirm eligibility or enrollment availability
- Limited public information about provider features and commercial pricing
Free for patients; provider pricing N/A
Catchtrial is an online clinical-trial matching service that helps patients discover studies relevant to their condition and location. It is designed for...
Pros
- More focused on patient-friendly trial discovery than general clinical-trial registries
- Can reduce manual searching by matching users with potentially relevant studies
- Designed around connecting patients with enrollment opportunities
Cons
- Less comprehensive public-trial coverage than ClinicalTrials.gov
- Eligibility matching may require confirmation directly with study teams
- Pricing and availability details are not publicly clear
4
TrialJectory
TrialJectory
TrialJectory is a clinical-trial matching platform focused on helping patients identify studies suited to their diagnosis and treatment history. It combines patient-provided...
Pros
- Uses medical-history details for more personalized trial matching
- Particularly strong for oncology trial discovery
- Offers patient guidance beyond basic keyword searching
Cons
- Best coverage is concentrated in cancer research
- Automated matches still require confirmation from the trial site
- Less useful for conditions with limited indexed studies
Free for patients; N/A for organizations
5
CenterWatch
CenterWatch
CenterWatch is a clinical-trial information service with a searchable database of recruiting studies and educational resources for patients and research professionals. It...
Pros
- Long-established clinical-trial directory with patient education resources
- Searches recruiting studies by condition, location, and study type
- Provides practical information about participation and research processes
Cons
- Search experience is less personalized than Catchtrial
- Database coverage and status may lag behind sponsor updates
- Some content is oriented toward the U.S. market
Free for patients; N/A for organizations
6
ResearchMatch
Vanderbilt University Medical Center
ResearchMatch is a nonprofit research-recruitment platform that connects volunteers with approved studies. It serves patients and researchers, allowing people to create profiles...
Pros
- Free nonprofit option for volunteers and researchers
- Supports participant-driven profile matching and study invitations
- Includes studies from participating academic research institutions
Cons
- Availability depends on participating institutions and approved studies
- Not a complete catalog of all clinical trials
- Matching may generate invitations rather than immediate enrollment
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