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CKEditor 4 VS Underlayer

Compare CKEditor 4 VS Underlayer and see what are their differences

CKEditor 4

CKEditor 4 is a rich text editor that enables you to write content inside of web pages or online applications.

Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
Underlayer

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.

Rating
0 reviews
Pricing
Freemium $149 / Monthly
Alternatives Is it good?
Eddyter
Build and integrate a WYSIWYG editor in minutes. Eddyter offers fast setup, developer-friendly APIs, and seamless content editing for modern web apps today. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, CKEditor 4 seems to be more popular. It has been mentioned 10 times since March 2021.

social mentions
10 vs 0
Text Editors popularity
100% vs 0%
alternatives listed
123 vs 2

Base details

Website, pricing, platforms and company facts side by side.

CKEditor 4
Underlayer
Website ckeditor.com underlayerhq.com
Pricing
Open source Official pricing
Freemium $149 / Monthly Official pricing
Company 2012 Startup from the United Arab Emirates · 1 - 9 employees · 2026
Listed in
Rich Text Editor Text Editors WYSIWYG Editor WYSIWYG Editors HTML Editor JavaScript Framework Components Software Development IDE +5
Education E-learning Education / E-Learning

About CKEditor 4 and Underlayer

In their own words, as submitted to SaaSHub.

CKEditor 4
Underlayer

CKEditor 4 is a smart WYSIWYG rich text editor that has been on the market since its launch in 2012. It allows software creators and developers to build stable and reliable writing solutions for applications of all sorts, within hours. Thanks to a plugin- and event-based architecture,...

Read more about CKEditor 4

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...

Read more about Underlayer

Features and specs

What each product offers, as listed by its team.

CKEditor 4 13 features
Underlayer 0 features
  • Autocomplete
  • Code snippets
  • Easy Image
    Premium
  • Emoji support
  • Export to PDF
    Premium
  • Image plugins
  • Math formulas
    Premium
  • Media embeds
  • @Mentions
  • Paste from Word, Excel and Google Docs
  • Spreadsheets
    Premium
  • Tables support with columns resizing, selecting rows and columns
  • Widgets

No features have been listed yet.

Analysis

An editorial look at what each product does well and who it suits.

CKEditor 4
Underlayer

Overall verdict

  • CKEditor 4 is considered a reliable and robust choice for developers looking for a fully-featured, customizable text editor. Its long-standing reputation and wide usage in the industry attest to its quality and effectiveness.

Why this product is good

  • CKEditor 4 is a highly popular WYSIWYG editor known for its rich set of features, flexibility, and ease of integration into web applications. It is suitable for both simple and complex editing tasks and has a large community support. The editor supports a wide range of plugins to extend its functionality, making it adaptable to various use cases.

Recommended for

  • Developers and companies looking for a versatile, feature-rich text editor.
  • Projects that require extensive customization and integration options.
  • Applications where end-users need advanced content editing and formatting capabilities.
  • Teams that value community support and reliable documentation.

No analysis of Underlayer yet.

Videos

Walkthroughs and reviews on video.

CKEditor 4 0 videos + Add
Underlayer 1 video + Add

No CKEditor 4 videos yet. You could help us improve this page by suggesting one.

Underlayer demo

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
CKEditor 4
Underlayer
100% 100%
Text Editors
0% 0%
0% 0%
Education
100% 100%
100% 100%
Rich Text Editor
0% 0%
0% 0%
E-learning
100% 100%

Questions & Answers

As answered by people managing CKEditor 4 and Underlayer.

Who are some of the biggest customers of your product?

Underlayer's answer:

it's pre-launching

What makes your product unique?

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.

Why should a person choose your product over its competitors?

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.

How would you describe the primary audience of your product?

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.

What's the story behind your product?

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.

Which are the primary technologies used for building your product?

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.

User comments

Share your experience with using CKEditor 4 and Underlayer. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

CKEditor 4 10 mentions
Underlayer 0 mentions
  • Show HN: Tilepieces – An open source project to visually editing HTML documents
    However, I think Ckeditor is (https://ckeditor.com/). You can find it in component format for tilepieces in the project https://github.com/tilepieces/component-examples. - Source: Hacker News / over 4 years ago
  • Pls, help it doesn't know why is showing an error on collectstatic. I tried everything that goes over every possible article which I found but nothing helped and I don't want to build the projects from zero since I already give 6 hours to set up it for the production server.
    It's CK Editor, a WYSIWYG text editor (a frontend component, so you wouldn't see it in your requirements.txt). I assume you're using it in a template somewhere? Otherwise why would collectstatic be looking for it? Source: over 4 years ago
  • Justnote - A privacy-focused note taking app built on Stacks
    Powered by one of the best rich text editor: CKEditor, all editing features like bold, underline, font color, and background color are supported. Source: over 4 years ago

View more

Tracking Underlayer since Sep 2026.

Alternatives to CKEditor 4 and Underlayer

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