
Contentful
WordPress
Sanity.io
Directus
Payload CMS
Prismic
Ghost
Manage any content. Anywhere. The leading open-source headless CMS. 100% JavaScript / TypeScript and fully customizable.

Coassemble
Trainn.co
Build courses by API, drop them into your product with one iframe, and get told who finished. No portal, no learner accounts, priced per course view.

Which is more popular?
Based on our record, Strapi seems to be more popular. It has been mentioned 342 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | strapi.io | underlayerhq.com |
| Pricing | ||
| Company | Startup from France | Startup from the United Arab Emirates ยท 1 - 9 employees ยท 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Strapi yet.
Underlayer is headless, API-first training for SaaS products. Instead of sending your users to a separate LMS portal, you generate a course, embed it where they already work, and get every completion sent back to your own systems. How it works Create a course. Generate one from a doc or a prompt...
What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Strapi is recommended for developers and development teams looking for a flexible and customizable CMS solution, particularly those who need a headless CMS that integrates easily with modern frontend frameworks like React, Vue, or Angular. It's also suitable for organizations that prefer an open-source solution they can modify according to their needs.
No analysis of Underlayer yet.
Walkthroughs and reviews on video.
Let's Checkout... #Strapi CMS
More videos
Underlayer demo
How often each product is chosen within a category, 0โ100% relative to the other.


As answered by people managing Strapi and Underlayer.
Underlayer's answer:
it's pre-launching
Underlayer's answer:
Underlayer is training with no portal. You build a course by API, by MCP, or in the visual builder, and add it to your product with one iframe. Then signed webhooks tell your systems who finished. Learners never create an account or leave your app, and the player uses your theme, so it looks like part of your product. We charge per course view, not per seat, and every price and overage rate is published.
Underlayer's answer:
Most course tools, like Coassemble, Trainn and LearningStudioAI, assume training happens on their own site: learners sign up, log in and get enrolled, and you pay per seat. Underlayer takes the opposite approach:
No learner accounts. You pass in your own user IDs and we track progress against them. Built for developers. A full REST API covers every resource, and an MCP server lets AI agents create and edit courses. Results in your own tools. Signed webhooks send completions to your CRM, your product or your data warehouse. SCORM 1.2 and 2004 export for customers who still need to load courses into an LMS. Public pricing. Plans start at $149/month for 25,000 course views, with unlimited learners and no sales call required.
Underlayer's answer:
SaaS product, customer success and engineering teams who want onboarding, product education or compliance training inside their own app. It also suits platforms that train other people's users, like partner networks, marketplaces and field-ops tools, where a separate LMS login gets in the way.
Underlayer's answer:
Every company putting training in front of its users hit the same wall: the LMS wanted to own the learner. That meant a separate portal, a second login and a per-seat bill for people who never opened a course. We built Underlayer as the layer underneath instead. You keep the product and the user relationship. We handle building the course, playing it and tracking progress, and we stay out of the way.
Underlayer's answer:
Next.js 16 (App Router) with React 19 and TypeScript, Tailwind CSS v4, and Supabase (Postgres with row-level security, Auth and Storage). Claude from Anthropic generates courses with AI. Stripe handles billing and Resend sends email. There is also a remote MCP server with OAuth 2.1 for AI-agent access.
Share your experience with using Strapi and Underlayer. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Strapi is one of the most used headless CMS platforms. Strapi is an open-source headless CMS that is customizable and easy to use. Companies such as Walmart, eBay, Toyota, IBM use this platform.
Strapi is an open-source Node.js headless content management system, which means that the entire codebase is available on GitHub and thrives on contributors. Strapi generates a working RESTful API or uses GraphQL for...
Strapi is a popular, flexible, and open-source headless CMS that enables us to create rich digital experiences. Strapi provides REST and GraphQL APIs developers can use to access the content stored in its repository.
We have no reviews of Underlayer yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Instead of rendering pages on the server, a headless CMS operates solely as a database and editing dashboard. The content is entered into the editor interface and stored as raw data. Consequently, your frontend application fetches this... - Source: dev.to / 2 months ago
That's not true anymore. In 2026, developers are switching away from Strapi at a pace that's hard to ignore โ not because it got worse, but because the alternatives got dramatically better. - Source: dev.to / 3 months ago
CMS content. Headless CMS responses from Strapi, Sanity, or Contentful are deeply nested. Type them once; let the compiler catch template bugs. - Source: dev.to / 6 months ago
Tracking Underlayer since Sep 2026.
When comparing Strapi and Underlayer, you can also consider the following products.

You don't need another CMS. You need a better way to manage content โ unified, structured, and ready to deploy to any digital channel.
Compare Contentful to Strapi or Underlayer:

Coassemble is an all-in-one, online training tool that connects people with the information they need โ anytime, anyplace.
Compare Coassemble to Strapi or Underlayer:

WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.
Compare WordPress to Strapi or Underlayer:

Trainn is a Customer Education platform for SaaS companies of all sizes to onboard and train customers, at scale, using product training & how-to videos, feature walkthroughs, and a dedicated customer training Academy.
Compare Trainn.co to Strapi or Underlayer:

Sanity.io a platform for structured content that comes with an open-source editor that you can customize with React.js.
Compare Sanity.io to Strapi or Underlayer:
