Is Auth0 or Nagios XI better?

Neither clearly leads. Auth0 starts at Free and Nagios XI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Auth0 or Nagios XI?

Auth0 starts at Free and Nagios XI at Free.

Does Auth0 or Nagios XI run on more platforms?

Auth0 runs on Web, iOS, Android. Nagios XI runs on Web.

Can I use Auth0 for free?

Both have a free tier, so you can try either at no cost before committing.

What is Auth0 best used for?

Auth0 is most often used for b2c authentication, b2b authentication, b2e authentication, api security. Of those, b2c authentication and b2b authentication are not what Nagios XI is typically brought in for.

What can Auth0 do that Nagios XI cannot?

Auth0 covers Universal login, Social login, Multi-factor authentication, Passwordless.

Technology · head to head

Auth0 vs Nagios XI

Auth0

Technology

Secure access for everyone

From: Free
Rated: -

Full review Website

Nagios XI

Technology

Enterprise-grade monitoring solution with advanced visualization and reporting

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Auth0 free tier limited to 25,000 monthly active users, requiring upgrade for growth beyond that; Nagios XI free Edition caps at 7 nodes or 100 services, whichever limit is hit first
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Auth0 and Nagios XI actually diverge.

Attributes where Auth0 and Nagios XI differ
Attribute	Auth0	Nagios XI
Pricing model	Unknown	one-time
Platforms	Web, iOS, Android	Web
Founded	2013	Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Technology).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Auth0

Universal login
Social login
Multi-factor authentication
Passwordless
User management
Anomaly detection
Extensibility
Machine to machine

Only in Nagios XI

Nothing recorded that Auth0 does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Auth0

B2C authenticationnot Nagios XI
B2B authenticationnot Nagios XI
B2E authenticationnot Nagios XI
API securitynot Nagios XI
Mobile app securitynot Nagios XI

Nagios XI

Monitoring servers, networks, and IoT devices for status changesnot Auth0
Detecting infrastructure problems before they cause outagesnot Auth0
Creating customizable dashboards for real-time IT visibilitynot Auth0
Tracking SLA compliance and generating capacity planning reportsnot Auth0

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Auth0

Free tier limited to 25,000 monthly active users, requiring upgrade for growth beyond that
Advanced features like MFA and RBAC only available on paid Essentials tier and above
Ownership by Okta introduces risk that independent product roadmap may change

Nagios XI

Free Edition caps at 7 nodes or 100 services, whichever limit is hit first
Standard Edition is licensed per node count, starting at $2,595 for 100 nodes and rising to $14,995 for 1,000 nodes
Enterprise Edition, which adds capacity planning and SLA reporting, is sold as an add-on starting at $4,690 for 100 nodes on top of the base license
Sitewide Edition for large distributed environments has no published price and requires contacting sales

Pricing, plan by plan

Auth0

Free

FreeFree
- Up to 25,000 monthly active users
- Basic authentication
- Email/password login
Essentials (B2C)$35/month
- Unlimited MAUs beyond free tier
- Multi-Factor Authentication
- Role-Based Access Control
Professional (B2C)$240/month
- All Essentials features
- Advanced security
- Custom branding

Nagios XI

Free

Free EditionFree
- 7 nodes OR 100 services limit
- Self-supported only
Standard 100-Node$2595/perpetual
- 100 nodes
- First year includes support and upgrades
Standard 500-Node$8295/perpetual
- 500 nodes
- First year includes support and upgrades
Standard 1000-Node$14995/perpetual
- 1,000 nodes
- First year includes support and upgrades

Which should you pick?

Choose Auth0 if

You need universal login.
You want to start without paying.
You work on Web, iOS, Android.
You also want social login.

Auth0 review

Choose Nagios XI if

You want to start without paying.

Nagios XI review

Questions people ask

Is Auth0 or Nagios XI better?: Neither clearly leads. Auth0 starts at Free and Nagios XI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Auth0 or Nagios XI?: Auth0 starts at Free and Nagios XI at Free.
Does Auth0 or Nagios XI run on more platforms?: Auth0 runs on Web, iOS, Android. Nagios XI runs on Web.
Can I use Auth0 for free?: Both have a free tier, so you can try either at no cost before committing.
What is Auth0 best used for?: Auth0 is most often used for b2c authentication, b2b authentication, b2e authentication, api security. Of those, b2c authentication and b2b authentication are not what Nagios XI is typically brought in for.
What can Auth0 do that Nagios XI cannot?: Auth0 covers Universal login, Social login, Multi-factor authentication, Passwordless.

Answered from the vendors’ own pages

Auth0: How much does Auth0 cost?

Auth0 has a Free tier for up to 25,000 monthly active users (MAUs). Paid plans start at $35/month (Essentials B2C) and scale to $240/month (Professional B2C) and higher for Enterprise. Pricing scales with MAU usage.

Source

Nagios XI: What is Nagios XI's pricing model?

Nagios XI uses perpetual licensing with one-time purchase costs based on node count, ranging from $2,595 for 100 nodes to $14,995 for 1,000 nodes.

Source

Auth0: Does Auth0 include Multi-Factor Authentication?

No. MFA, RBAC (Role-Based Access Control), and premium support are not included in the free tier and require upgrading to paid Essentials plans or higher.

Source

Nagios XI: Is there a free version of Nagios XI?

Yes, Nagios XI Free Edition is available at no cost with a limit of 7 nodes or 100 services, whichever is reached first.

Source

Auth0: Is Auth0 independent or part of a larger company?

Auth0 was acquired by Okta in May 2021 for $6.5 billion. It now operates as a subsidiary business unit within Okta, but maintains its own brand and operations.

Source

Nagios XI: What is included with Nagios XI licensing?

Initial licenses include one year of free version upgrades, up to 10 support cases, and support portal access. Each license permits three installations: production, backup/failover, and testing/development.

Source

Auth0: Who should use Auth0 vs Okta?

Auth0 is developer-focused and serves customer identity use cases (B2C). Okta serves workforce identity (B2B) and has broader enterprise features. Auth0 now serves both markets post-acquisition but maintains its developer-friendly positioning.

Source

Auth0 vs Nagios XI

Auth0

Nagios XI

The short version

Where they differ

What each one covers

Only in Auth0

Only in Nagios XI

What people use each for

Auth0

Nagios XI

Where each one falls short

Auth0

Nagios XI

Pricing, plan by plan

Auth0

Nagios XI

Which should you pick?

Choose Auth0 if

Choose Nagios XI if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Auth0

More on Nagios XI

Keep looking

Other head to heads