# Castor EDC vs Greenlight Guru Clinical - 2026 Comparison - Software Advice

> Castor EDC vs Greenlight Guru Clinical - See how these products stack up against each other with real user reviews, product feature comparisons and screenshots. Find out which one is best for your organization.

Source: https://www.softwareadvice.com/data-collection/castor-edc-profile/vs/smart-trial

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Castor EDC vs Greenlight Guru Clinical

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# Castor EDC vs Greenlight Guru Clinical: Which is best for you?

Updated April 8, 2026

[Castor EDC](https://www.softwareadvice.com/data-collection/castor-edc-profile/)

4.7 [(204)](https://www.softwareadvice.com/data-collection/castor-edc-profile/reviews/)

[Greenlight Guru Clinical](https://www.softwareadvice.com/electronic-data-capture/smart-trial-profile/)

4.4 [(72)](https://www.softwareadvice.com/electronic-data-capture/smart-trial-profile/#reviews)

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Starting Price

Pricing available upon request

Pricing available upon request

Free Trial

Free Version

Screenshots  
and Demo

See all

See all

Top Rated  
  Features

Electronic Data Capture

4.70

Clinical Study Management

4.65

Patient Monitoring

4.64

See All

Remote Data Capture

4.54

Data Capture and Transfer

4.48

Clinical Study Management

4.45

See All

Integrations

eCRF

See All

See All

Pros / Cons

-   The overall font size, helps visually as you do not need to scroll up and down allowing for overall viewing of the page.
    
-   The only issue I have is the time it takes to save a page before I can move onto the next.
    

Read more

-   It is an essential tool for maintaining clinical trial data and communication with the clinical sites.
    
-   it can be difficult to update queries on Greenlight at times as sometime the build is stuck in a catch22 situation where a query cant be answered,
    

Read more

Ease-of-Use

Highest performing feature  
in the comparison

4.7/ 5

4.6/ 5

Value for Money

4.6/ 5

4.6/ 5

Customer Support

4.7/ 5

Highest performing feature  
in the comparison

4.8/ 5

Functionality

Highest performing feature  
in the comparison

4.5/ 5

4/ 5

Support Options

Email/Help Desk

FAQs/Forum

Knowledge Base

Phone Support

24/7 (Live Rep)

Chat

Email/Help Desk

FAQs/Forum

Knowledge Base

Phone Support

24/7 (Live Rep)

Chat

Training Options

In Person

Live Online

Webinars

Documentation

Videos

In Person

Live Online

Webinars

Documentation

Videos

FrontRunners

N/A

N/A

Advisor  
  Recommendations

N/A

N/A

Ideal Customer Size

Small

Medium

Large

Small

Medium

Large

Deployment Options

Cloud, SaaS, Web-Based

Desktop - Mac

Desktop - Windows

Desktop - Linux

Desktop - Chromebook

On-Premise - Windows

On-Premise - Linux

Mobile - Android

Mobile - iPhone

Mobile - iPad

Cloud, SaaS, Web-Based

Desktop - Mac

Desktop - Windows

Desktop - Linux

Desktop - Chromebook

On-Premise - Windows

On-Premise - Linux

Mobile - Android

Mobile - iPhone

Mobile - iPad

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