Which is better, Exterro or Onna?

Exterro edges out Onna based on user ratings across 99 reviews. That said, the best pick depends on your workflow — Onna may be a stronger fit for specific team sizes or use cases. Review the full comparison to decide.

What are the main differences between Exterro and Onna?

Key differences between Exterro and Onna include free trial availability (Onna offers one, Exterro does not). Use the Spotsaas comparison table to evaluate each dimension before deciding.

Do both Exterro and Onna offer a Free trial?

Onna offers Free Trial, but Exterro does not.

Who are the typical users of Exterro?

Exterro is designed for Large Enterprises, Medium Business, Small Business.

Who are the typical users of Onna?

Onna is designed for Large Enterprises, Medium Business, Small Business.

What is the starting price of Exterro and Onna?

Pricing details for both Exterro and Onna are unavailable.

What are the best alternatives to Exterro?

Some top alternatives to Exterro include AdaptiveGRC, LexComply, Logikcull, Relativity, Reprise.

What are the best alternatives to Onna?

Some top alternatives to Onna include Logikcull, Relativity, CasePoint, Cavo eD, Catalyst Insight.

Exterro vs Onna Comparison

Last updated: May 22, 2026

Exterro

4.3(99 reviews)

Starting at Contact for pricing

Large Enterprises
Medium Business

Exterro's eDiscovery Assistant is a highly intuitive and feature-rich enterprise-class eDiscovery software specifically designed to support a wide range of users while minimizing IT involvement. It helps legal department…

View Pricing Read Reviews

Onna

4.0(1 reviews)

Starting at Contact for pricing

Free Trial
Large Enterprises
Medium Business

Onna's powerful eDiscovery software makes it easy to sort and pinpoint relevant information from large data sets. The platform is used by law firms, corporations, government agencies, and educational institutions to mana…

View Pricing Read Reviews

Exterro leads on user satisfaction with a 4.3-star rating across 99 reviews.

SpotSaaS Analysis

ExterroOnna

The core difference between Exterro and Onna lies in their focus, with Exterro emphasizing customizable eDiscovery workflows for legal teams, while Onna prioritizes advanced data integration and analysis capabilities. Exterro is ideal for larger enterprise legal teams, whereas Onna suits medium to large businesses seeking robust data management solutions.

- Best for enterprise legal teams - Customizable eDiscovery workflows - Comprehensive legal hold processes - Strong vendor collaboration - Responsive customer support - Suitable for companies with 51-500 or 500+ employees

- Best for legal teams needing data integration - Advanced eDiscovery capabilities - Strong integration from diverse sources - In-depth data analysis features - Ideal for medium and large enterprises - Focus on advanced search functionalities

Exterro vs Onna — at a glance

Feature	Exterro	Onna
Rating	4.3 / 5	4.0 / 5
Reviews	99	1
Starting price	Contact for pricing	Contact for pricing
Free trial	No	Yes
Free version	No	No
Best for	Large Enterprises, Medium Business, Small Business	Large Enterprises, Medium Business, Small Business
Category	eDiscovery Software	eDiscovery Software
Platforms	SaaS/Web/Cloud, Installed - Windows, Installed - Mac	SaaS/Web/Cloud, Installed - Windows, Installed - Mac
API	—	Available
Support modes	24/7 (Live rep), Business Hours	Business Hours, Online
Certifications	SOC 2, HIPAA, GDPR, ISO 27001	SOC 2, HIPAA, GDPR, ISO 27001
Data residency	US	US

Key differences between Exterro and Onna

Free trial: Onna offers a free trial; Exterro does not.
User satisfaction: Exterro scores higher with a 4.3-star average.
Deployment: Exterro supports SaaS/Web/Cloud, Installed - Windows, Installed - Mac; Onna supports SaaS/Web/Cloud, Installed - Windows, Installed - Mac.

Exterro vs Onna — find the better fit before you commit.

Which tool fits your team best

Which is actually cheaper for your team size

Where each product wins, per real buyers

Most eDiscovery Software tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.

Biggest differences

Features

Pricing

Buying details

Security

Buyer feedback

Integrations

Product tour

Other options

	Exterro (87) Talk to an expert Talk to an expert	Onna (17) Talk to an expert Talk to an expert

Biggest differences

Affiliate Disclosure

Start here before you go deeper into features.

Exterro

Best for enterprise legal teams needing powerful, customizable eDiscovery workflows.

Choose if

You require comprehensive legal hold processes including employee change monitoring.
Your team values strong vendor collaboration and responsive customer support.
You need an intuitive, web-based interface with flexible, configurable workflows.

Consider alternatives if

You are a small business with minimal legal hold needs.
You need extensive out-of-the-box integrations with systems like Outlook.

Onna

Best for legal teams needing advanced eDiscovery with strong data integration.

Choose if

You require comprehensive data integration from multiple diverse sources.
Your team needs advanced search and in-depth data analysis capabilities.
Data security and regulatory compliance are top priorities for your organization.

Consider alternatives if

Your team lacks dedicated support to onboard and manage complex features.
You need extensive third-party app integrations beyond Onna’s limited marketplace.

Exterro: Best for enterprise legal teams needing powerful, customizable eDiscovery workflows. Onna: Best for legal teams needing advanced eDiscovery with strong data integration.

Description	Exterro's eDiscovery Assistant is a highly intuitive and feature-rich enterprise-class eDiscovery software specifically designed to support a wide range of users while minimizing IT ... Read More about Exterro	Onna's powerful eDiscovery software makes it easy to sort and pinpoint relevant information from large data sets. The platform is used by law firms, corporations, government agencies, and ... Read More about Onna
Free Trial Availability	No free trial	Free Trial available
Spotsaas Score What's this? ↗	9.6/10	8.3/10
User Ratings Based on verified Spotsaas reviews	4.3 (99)	4 (1)
Best Company Size	51-500 employees500+ employees	Medium BusinessLarge Enterprises
	Get pricing help	Get pricing help

Software Demo

Demo	Exterro has not given any software demo yet If you're the owner of this profile, add your demo.Contact us

Need a second opinion?

Get shortlist help from a software advisor

Share your priorities, budget, and team needs, and we’ll help you narrow the options and understand the tradeoffs before you talk to vendors.

How do Exterro and Onna Compare on Features?

Total Features	9 Features	7 Features
Unique Features	No unique features	No unique features
	Get Quote	Get Quote

Compare Exterro and Onna on pricing

Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.

Pricing Option
Pricing Plans	Not Available	Not Available
	View detailed pricing	View detailed pricing

Other Details

Organization Types supported	Small Business Freelancers Medium Business Large Enterprises	Small Business Freelancers Medium Business Large Enterprises
Platforms Supported	Mobile - iOS Browser Based (Cloud) Mobile - Android Installed - Mac Installed - Windows	Mobile - iOS Browser Based (Cloud) Mobile - Android Installed - Mac Installed - Windows
Modes of support	24/7 (Live rep) Business Hours Online	24/7 (Live rep) Business Hours Online
API Support	Not Available	Available
	Get help choosing	Get help choosing

Security & Compliance

Certifications, data handling, and security controls for IT and compliance evaluators.

SOC 2	✓ Yes	✓ Yes
HIPAA	✓ Yes	✓ Yes
GDPR	✓ Yes	✓ Yes
ISO 27001	✓ Yes	✓ Yes
Single Sign-On (SSO)	✓ Yes	✓ Yes
Multi-Factor Auth (MFA)	✓ Yes	✓ Yes
Data Encryption	✓ Yes	✓ Yes
Audit Logs	✓ Yes	✓ Yes
Data Residency	🇺🇸 US	🇺🇸 US

Exterro User Reviews & Rating Comparison

User Ratings	4.3 (based on 99 reviews)	4 (based on 1 reviews)
Rating Distribution	61 22 4 0 0	7 9 1 0 0
Spotsaas Editor’s POV generated by AI	Buyer sentiment Users generally praise Exterro for its powerful legal hold capabilities, excellent customer support, and intuitive UI, though some find the complexity and integration limitations challenging. What buyers like Ease of use Customer support Legal hold process efficiency Common complaints Complexity of features Limited system integrations	Buyer sentiment Users generally appreciate Onna's powerful data integration and search capabilities, though some find the feature set complex and the marketplace limited. What buyers like Ease of use Advanced search functionality Data security and compliance Common complaints Complexity for new users Limited app marketplace
Pros and Cons	Streamlines and speeds up legal hold processes Excellent customer support and partnership Intuitive and easy-to-use web user interface Complex features and customizations can be overwhelming without support Limited integration with some systems such as Outlook	Comprehensive data integration across multiple sources Advanced search and in-depth data analysis capabilities Strong focus on data security and regulatory compliance Complexity of features can overwhelm new users without support Limited marketplace for additional apps and connectors
Positive Reviews	No reviews available for the product	No reviews available for the product
	Read reviews	Read reviews

Media and Screenshots

Screenshots	6 Screenshots	7 Screenshots
Videos	No videos available.	3 Videos

Top Alternatives to Exterro and Onna in 2026

Alternatives	AdaptiveGRC 5 LexComply Logikcull 4.8	Logikcull 4.8 Relativity 4.5 CasePoint 5

Frequently asked questions

Which is better, Exterro or Onna?: Exterro edges out the other on user ratings (4.3 vs 4.0). That said, the best pick depends on your use case — use the comparison tables above to evaluate each dimension.
Do Exterro and Onna offer a free trial?: Onna offers a free trial. Exterro does not.
What is the starting price of Exterro vs Onna?: Exterro starts at Contact for pricing. Onna starts at Contact for pricing.
What are the top alternatives to Exterro?: Top alternatives to Exterro include AdaptiveGRC, LexComply, Logikcull, Relativity, Reprise.
What are the top alternatives to Onna?: Top alternatives to Onna include Logikcull, Relativity, CasePoint, Cavo eD, Catalyst Insight.

Exterro vs Onna Comparison

Exterro

Onna

Exterro vs Onna — at a glance

Key differences between Exterro and Onna

Exterro vs Onna — find the better fit before you commit.

Exterro

Onna

Biggest differences

Description

Free Trial Availability

Spotsaas Score

User Ratings

Best Company Size

Software Demo

Demo

Get shortlist help from a software advisor

How do Exterro and Onna Compare on Features?

Compare Exterro and Onna on pricing

Other Details

Organization Types supported

Platforms Supported

Modes of support

API Support

Security & Compliance

Exterro User Reviews & Rating Comparison

Media and Screenshots

Screenshots

Videos

Top Alternatives to Exterro and Onna in 2026

Related Blogs and Articles for Ediscovery Software

Frequently asked questions