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Jekyll VS Underlayer

Compare Jekyll VS Underlayer and see what are their differences

Jekyll

Jekyll is a simple, blog aware, static site generator.

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?
FlexiQuiz
FlexiQuiz is a powerful online test generator that enables you to create engaging online quizzes, tests, or exams in minutes. Choose from 100's of features to create a customized quiz that meets your objectives for business, education, or fun. 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, Jekyll seems to be more popular. It has been mentioned 204 times since March 2021.

social mentions
204 vs 0
CMS popularity
100% vs 0%
alternatives listed
240+ vs 2

Base details

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

Jekyll
Underlayer
Website jekyllrb.com underlayerhq.com
Pricing
Open source
Freemium $149 / Monthly Official pricing
Company Startup from the United States Startup from the United Arab Emirates · 1 - 9 employees · 2026
Listed in
CMS Blogging Blogging Platform Static Site Generators +1
Education E-learning Education / E-Learning

About Jekyll and Underlayer

In their own words, as submitted to SaaSHub.

Jekyll
Underlayer

No description of Jekyll 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...

Read more about Underlayer

Features and specs

What each product offers, as listed by its team.

Jekyll 5 features
Underlayer 0 features
  • Speed and Performance
    Jekyll generates static websites, which means they load faster compared to dynamic websites. No database queries are required, reducing server overhead and improving performance.
  • Security
    Static sites have a smaller attack surface compared to dynamic sites because they don't rely on databases or server-side code. This means fewer vectors for potential compromises.
  • Simplicity
    Jekyll setups are relatively straightforward, especially if you are comfortable writing in Markdown and HTML. This can make it easier to manage and maintain your website.
  • Integration with GitHub Pages
    Jekyll is designed to work seamlessly with GitHub Pages, allowing you to host your website for free with automatic deployment directly from your GitHub repository.
  • Customizability
    Jekyll allows for extensive customization through its support for plugins, themes, and templates. This can be helpful to create a unique look and functionality for your website.

Possible disadvantages

  • Learning Curve
    While Jekyll is simpler than some other static site generators, it does require some familiarity with the command line, version control (Git), and YAML configuration.
  • Build Time
    For large websites, the build times can become lengthy, which can slow down the development process, especially if you are making frequent updates.
  • Lack of Real-time Content Updates
    Since Jekyll generates static sites, real-time content updates (e.g., comments, dynamic forms) aren't natively supported and require third-party services or additional tooling.
  • Dependence on Ruby
    Jekyll is built with Ruby, so you will need to have Ruby installed and occasionally deal with Ruby-specific issues. This might be a drawback for developers who are not familiar with the Ruby ecosystem.
  • Limited Built-in Functionality
    While Jekyll is very flexible, it doesn’t have built-in support for many features out of the box, which might require you to manually implement or rely on plugins.

No features have been listed yet.

Analysis

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

Jekyll
Underlayer

Overall verdict

  • Jekyll is a good choice for individuals and organizations looking for a straightforward, reliable, and efficient way to build static websites. Its strengths include simplicity, flexibility, and strong community support, which contribute to a smooth development experience.

Why this product is good

  • Jekyll is a popular static site generator that is widely appreciated for its simplicity, speed, and ease of use. It is particularly suited for creating blogs and simple websites, leveraging Markdown and Liquid templates to generate static HTML content. Its integration with GitHub Pages also makes it a convenient choice for developers and non-developers alike who want to host their sites directly from their GitHub repositories without additional setup or cost.

Recommended for

  • Bloggers and content creators looking for a simple way to publish content online.
  • Developers who prefer writing in Markdown and managing content with a version control system.
  • Users who want to host their sites for free using GitHub Pages.
  • Anyone in need of a static site generator that is easy to set up, customize, and maintain with minimal resources.

No analysis of Underlayer yet.

Videos

Walkthroughs and reviews on video.

Jekyll 1 video + Add
Underlayer 1 video + Add

Getting Started With Jekyll, The Static Site Generator

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
Jekyll
Underlayer
100% 100%
CMS
0% 0%
0% 0%
Education
100% 100%
100% 100%
Blogging
0% 0%
0% 0%
E-learning
100% 100%

Questions & Answers

As answered by people managing Jekyll 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 Jekyll and Underlayer. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

Jekyll no reviews yet
Underlayer no reviews yet

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We have no reviews of Underlayer yet. Be the first one to post

Social recommendations and mentions

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

Jekyll 204 mentions
Underlayer 0 mentions
  • Managing private data from the web securely on AWS
    My bookmarks have been public since 1998, and the previous version, bookmarks-v3.0, was a static site generated by Jekyll and published on GitHub Pages: it cost nothing, and for a list of public links it was good enough. The criterion... - Source: dev.to / 15 days ago
  • Setting up a hugo static site hosted with Porkbun
    This is a static site generated with hugo with the PaperMod theme. I wanted an easy to use static site generator. I considered Jekyll And believe it to be a good choice for static sites. There seemed to be slightly more themes I liked... - Source: dev.to / 7 months ago
  • So, you want to vibecode a linkblog?
    First of all, I modified my publishing programs to keep a (local) copy of each link published modulePublicationCache and then I thought about using it for my linkblog. I like very much jekyll for a blog and I requested to some AIs... - Source: dev.to / 8 months ago

View more

Tracking Underlayer since Sep 2026.

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