
TinyMCE
Froala Editor
Summernote
Quill
CKEditor 4
Aloha Editor
Tip Tap
Real-time collaborative future-ready rich text editor

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, CKEditor seems to be more popular. It has been mentioned 11 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | ckeditor.com | underlayerhq.com |
| Pricing | ||
| Company | 2018 | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


CKEditor 5 is a modern WYSIWYG rich text editor that can easily accommodate the requirements of businesses and users in the age of digital transformation. It allows software creators and developers to build powerful writing solutions for applications of all sorts, within hours. Thanks to a fully...
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.


No features have been listed yet.
Walkthroughs and reviews on video.
CKEditor 5 - Collaboration features
More videos
Underlayer demo
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CKEditor 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 CKEditor 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.


CKEditor 5 is a feature-rich and open-source WYSIWYG editing solution with great flexibility. The user interface looks modern. Hence, you may expect a modern user experience.
CKEditor is a popular, versatile WYSIWYG text editor which allows you to write content directly on web pages or online applications. It can be used to create Word-like documents or provide a simple toolbar for email...
We have no reviews of Underlayer yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


The actual "word processor" or editor of notion is hot garbage, especially for software/keyboard people. Try out something like https://ckeditor.com/ and it is infinitely better. - Source: Hacker News / over 1 year ago
For example, at CKEditor, we use a hybrid approach — Syntactically Awesome Style Sheets (Sass) preprocessor and CSS variables:. - Source: dev.to / over 1 year ago
Another sign that your application might vulnerable to SXSS is simply whether or not you are using a rich text editor, such as TinyMCE or CKEditor. - Source: dev.to / almost 2 years ago
Tracking Underlayer since Sep 2026.
When comparing CKEditor and Underlayer, you can also consider the following products.

TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
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Coassemble is an all-in-one, online training tool that connects people with the information they need – anytime, anyplace.
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Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.
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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.
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Summernote is a JavaScript library that helps users create WYSIWYG editors online.
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