Is Cortex or React better?

Neither clearly leads. Cortex starts at On request and React at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Cortex or React?

React has a free tier; the other does not. Paid plans start at On request for Cortex and Free for React.

Does Cortex or React run on more platforms?

Cortex runs on Web, API. React runs on Web, Mobile.

Can I use React for free?

Yes. React has a free tier, so you can try it without paying. Cortex starts at On request.

What is Cortex best used for?

Cortex is most often used for a platform team that needs to prove to leadership how far a kubernetes or framework migration has actually progressed across hundreds of services, an organisation where ownership of production services is genuinely unknown after reorganisations or acquisitions, enforcing production readiness standards on new services at creation time rather than at incident review, replacing a self-hosted backstage that is consuming a full-time engineer or two just to stay upgraded. Of those, a platform team that needs to prove to leadership how far a kubernetes or framework migration has actually progressed across hundreds of services and an organisation where ownership of production services is genuinely unknown after reorganisations or acquisitions are not what React is typically brought in for.

What can Cortex do that React cannot?

Cortex covers Service catalogue, Scorecards, Initiatives, Self-service templates. React covers Component-based architecture, Virtual DOM, JSX syntax, Unidirectional data flow.

Developer Tools · head to head

Cortex vs React

Cortex

Developer Tools

Internal developer portal that scores service ownership and maturity rather than just cataloguing services

From: On request
Free plan: No

Full review Website

React

Web Development

A JavaScript library for building user interfaces

From: Free
Free plan: Yes

Full review Website

The short version

Only React has a free tier, so it costs nothing to try first.
Each has a real cost: Cortex pricing is quote only, so a platform team cannot build a business case or compare against the true cost of self-hosted Backstage without entering a sales cycle first.; React jSX requires a build step using Webpack, Babel, or other transpilers to convert to browser-executable JavaScript
They diverge on capability: Cortex covers Service catalogue, React covers Component-based architecture.
Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Cortex and React actually diverge.

Attributes where Cortex and React differ
Attribute	Cortex	React
Starting price	On request	Free
Pricing model	quote	free
Free tier	No	Yes
Platforms	Web, API	Web, Mobile
Category	Developer Tools	Web Development
Founded	Unknown	2013

Identical on both: user rating (Not yet rated).

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 Cortex

Service catalogue
Scorecards
Initiatives
Self-service templates
Query language
Eng intelligence
Integrations layer
On-call and ownership mapping

Only in React

Component-based architecture
Virtual DOM
JSX syntax
Unidirectional data flow
React Hooks
Server-side rendering
Hot reloading
Developer tools

What people use each for

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

Cortex

A platform team that needs to prove to leadership how far a Kubernetes or framework migration has actually progressed across hundreds of servicesnot React
An organisation where ownership of production services is genuinely unknown after reorganisations or acquisitionsnot React
Enforcing production readiness standards on new services at creation time rather than at incident reviewnot React
Replacing a self-hosted Backstage that is consuming a full-time engineer or two just to stay upgradednot React

React

Web application developmentnot Cortex
Single-page applicationsnot Cortex
Interactive user interfacesnot Cortex
Mobile app developmentnot Cortex
Component librariesnot Cortex

Where each one falls short

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

Cortex

Pricing is quote only, so a platform team cannot build a business case or compare against the true cost of self-hosted Backstage without entering a sales cycle first.
The catalogue is only as accurate as the metadata you supply, so an organisation with inconsistent repository conventions spends its first quarter cleaning data before any scorecard means anything.
Scorecards create political friction: publishing a per-team grade turns an engineering standard into a performance metric, and teams will game the rules rather than fix the underlying issue.
It is closed source and hosted, so organisations with strict data residency or air-gap requirements have limited options compared with running Backstage themselves.
Value scales with organisation size, so a company with fifty engineers and thirty services will find the catalogue tells them nothing they did not already know while still paying an enterprise contract.

React

JSX requires a build step using Webpack, Babel, or other transpilers to convert to browser-executable JavaScript
Routing and state management are separate dependencies, not included in core library
Configuration complexity for advanced features like server-side rendering without a meta-framework
Requires choosing and configuring build tools and development environment setup

Pricing, plan by plan

Cortex

On request

Cortex$undefined/year
- Service catalogue and ownership mapping
- Scorecards and initiatives
- Self-service templates

React

Free

Open SourceFree
- Component-based architecture
- Virtual DOM
- JSX syntax

Which should you pick?

Choose Cortex if

You need service catalogue.
You work on Web, API.
You also want scorecards.

Cortex review

Choose React if

You need component-based architecture.
You want to start without paying.
You work on Web, Mobile.
You also want virtual dom.

React review

Questions people ask

Is Cortex or React better?: Neither clearly leads. Cortex starts at On request and React at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cortex or React?: React has a free tier; the other does not. Paid plans start at On request for Cortex and Free for React.
Does Cortex or React run on more platforms?: Cortex runs on Web, API. React runs on Web, Mobile.
Can I use React for free?: Yes. React has a free tier, so you can try it without paying. Cortex starts at On request.
What is Cortex best used for?: Cortex is most often used for a platform team that needs to prove to leadership how far a kubernetes or framework migration has actually progressed across hundreds of services, an organisation where ownership of production services is genuinely unknown after reorganisations or acquisitions, enforcing production readiness standards on new services at creation time rather than at incident review, replacing a self-hosted backstage that is consuming a full-time engineer or two just to stay upgraded. Of those, a platform team that needs to prove to leadership how far a kubernetes or framework migration has actually progressed across hundreds of services and an organisation where ownership of production services is genuinely unknown after reorganisations or acquisitions are not what React is typically brought in for.
What can Cortex do that React cannot?: Cortex covers Service catalogue, Scorecards, Initiatives, Self-service templates. React covers Component-based architecture, Virtual DOM, JSX syntax, Unidirectional data flow.

Answered from the vendors’ own pages

Cortex: How is Cortex different from Backstage?

Backstage is an open source framework you build and staff. Cortex is a hosted product with scorecards and initiatives out of the box and no platform team required to keep it running.

React: Is React free to use commercially?

Yes. React is distributed under the MIT open-source license, which permits free usage for both personal and commercial projects without licensing fees or restrictions.

Source

Cortex: Is pricing published?

No. Cortex requires a sales conversation and prepares a custom proposal.

React: Does React support TypeScript?

Yes. React works seamlessly with TypeScript for type-safe component development. TypeScript provides static type checking for React components, props, and state, improving code reliability and developer experience.

Source

Cortex: Can it self-host?

It is offered as a hosted product; on-premise arrangements are handled through sales rather than published.

React: Do I need a build step to use React?

If you use JSX, yes. JSX requires transpilation by a build tool like Webpack and Babel before browsers can execute it. However, React can be used without JSX by calling React.createElement directly, which does not require a build step.

Source

Cortex: What is the main adoption risk?

Bad or missing service metadata. The catalogue and every scorecard on top of it inherit whatever quality your repositories already have.

React: Can I build offline-capable applications with React?

Yes. React supports building Progressive Web Apps (PWAs) with service workers and IndexedDB for offline functionality. Create React App includes service worker setup, though it must be manually enabled for production use.

Source

Cortex vs React

Cortex

React

The short version

Where they differ

What each one covers

Only in Cortex

Only in React

What people use each for

Cortex

React

Where each one falls short

Cortex

React

Pricing, plan by plan

Cortex

React

Which should you pick?

Choose Cortex if

Choose React if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Cortex

More on React

Keep looking

Other head to heads