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StackEdit VS Underlayer

Compare StackEdit VS Underlayer and see what are their differences

StackEdit

Full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites.

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?
DocRaptor
As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more 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, StackEdit seems to be more popular. It has been mentioned 52 times since March 2021.

social mentions
52 vs 0
Markdown Editor popularity
100% vs 0%
alternatives listed
240+ vs 2

Base details

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

StackEdit
Underlayer
Website stackedit.io underlayerhq.com
Pricing
Open source
Freemium $149 / Monthly Official pricing
Company — Startup from the United Arab Emirates · 1 - 9 employees · 2026
Listed in
Markdown Editor Text Editors Markdown Viewer Office & Productivity +1
Education E-learning Education / E-Learning

About StackEdit and Underlayer

In their own words, as submitted to SaaSHub.

StackEdit
Underlayer

No description of StackEdit 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.

StackEdit 5 features
Underlayer 0 features
  • Markdown Support
    StackEdit offers robust support for Markdown, allowing for efficient and straightforward text formatting and editing.
  • Offline Access
    Users can work on their documents offline, making it convenient for use in areas with limited or no internet connectivity.
  • Synchronization
    StackEdit can be synchronized with various cloud storage services like Google Drive and Dropbox, enabling easy access and backup.
  • Collaboration
    The platform supports real-time collaboration, which is useful for teams working on a document simultaneously.
  • Integrated Editor
    It includes a feature-rich Markdown editor with a live preview, which helps users see the formatted version of their text as they type.

Possible disadvantages

  • Learning Curve
    Users unfamiliar with Markdown may find it initially challenging to use all of StackEdit's features effectively.
  • Limited Export Options
    While it does support exporting to HTML, PDF, and a few other formats, the export options may be limited compared to other markdown editors.
  • Performance
    Some users might experience performance issues with large documents or when using the application for extended periods.
  • Requires Signup for Full Features
    To access all features, such as cloud synchronization and import/export options, users need to sign up for an account.
  • Dependency on Internet for Sync
    While offline editing is a plus, syncing documents still requires an internet connection, which may be inconvenient for some users.

No features have been listed yet.

Analysis

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

StackEdit
Underlayer

Overall verdict

  • StackEdit is generally considered a good tool for those who need a reliable markdown editor with advanced features, especially for users who value cloud integration and offline functionality.

Why this product is good

  • StackEdit is a versatile, in-browser markdown editor that offers a variety of features, such as real-time collaboration, seamless synchronization with cloud services like Google Drive and Dropbox, and offline editing capabilities. It supports a wide range of markdown variations and extensions, making it suitable for different types of documentation and note-taking needs.

Recommended for

    StackEdit is highly recommended for writers, bloggers, developers, and students who frequently work with markdown files and need a powerful editor that can integrate with cloud storage services while providing collaboration features.

No analysis of Underlayer yet.

Videos

Walkthroughs and reviews on video.

StackEdit 2 videos + Add
Underlayer 1 video + Add

StackEdit - Write Markdown on Google Drive

More videos

  • - StackEdit éditeur puissant de Markdown en ligne 💪

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
StackEdit
Underlayer
100% 100%
Markdown Editor
0% 0%
0% 0%
Education
100% 100%
100% 100%
Text Editors
0% 0%
0% 0%
E-learning
100% 100%

Questions & Answers

As answered by people managing StackEdit 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 StackEdit 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.

StackEdit 52 mentions
Underlayer 0 mentions
  • Show HN: MarkNote – Local-First Wysiwyg Markdown Editor (Tauri/Rust)
    - Not sure if I want auto-save (see above) This is another local-first editor I would prefer using (no install required): https://stackedit.io --- I also prefer installing via brew. Otherwise macOS doesn't allow you to run the app... - Source: Hacker News / 8 months ago
  • If it is worth keeping, save it in Markdown
    Https://daringfireball.net/projects/markdown/syntax#philosophy "Markdown-formatted document should be publishable as-is, as plain text, without looking like it’s been marked up with tags or formatting instructions." Any text editor... - Source: Hacker News / over 1 year ago
  • 100+ Must-Have Web Development Resources
    StackEdit: An open-source, free Markdown editor based on PageDown. - Source: dev.to / about 2 years ago

View more

Tracking Underlayer since Sep 2026.

Alternatives to StackEdit and Underlayer

When comparing StackEdit and Underlayer, you can also consider the following products.

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