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Liveblocks VS Underlayer

Compare Liveblocks VS Underlayer and see what are their differences

Liveblocks

Build amazing real‑time collaborative products

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?
Calcumber
Calculate in a notebook and share — from everyday math to engineering. 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, Liveblocks seems to be more popular. It has been mentioned 20 times since March 2021.

social mentions
20 vs 0
Developer Tools popularity
100% vs 0%
alternatives listed
115 vs 2

Base details

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

Liveblocks
Underlayer
Website liveblocks.io underlayerhq.com
Pricing
Open source Official pricing
Freemium $149 / Monthly Official pricing
Company — Startup from the United Arab Emirates · 1 - 9 employees · 2026
Listed in
Developer Tools Project Management Code Collaboration Betting +1
Education E-learning Education / E-Learning

About Liveblocks and Underlayer

In their own words, as submitted to SaaSHub.

Liveblocks
Underlayer

No description of Liveblocks 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.

Liveblocks 5 features
Underlayer 0 features
  • Real-time Collaboration
    Liveblocks enables real-time collaboration by synchronizing data across different users, which allows multiple people to work together seamlessly.
  • Scalability
    The service is designed to scale, making it suitable for small projects as well as large applications with a high number of simultaneous users.
  • Cross-platform Support
    Liveblocks can be integrated into web and mobile applications, providing flexibility in terms of where the real-time features can be used.
  • Developer-friendly API
    The API is straightforward and well-documented, which makes it easy for developers to integrate real-time capabilities into their applications.
  • Customization
    Liveblocks offers customization options, allowing developers to tailor the experience to meet the specific needs of their applications.

Possible disadvantages

  • Complexity for Beginners
    Developers new to real-time frameworks might find the integration process complex and require a learning curve.
  • Cost
    For larger applications or those that need advanced features, the cost of using Liveblocks might be a concern, especially for startups or individual developers.
  • Dependency on Internet Connection
    Since Liveblocks is a real-time service, a stable internet connection is critical for optimal performance. Poor connectivity can impact the user experience.
  • Limited Offline Capabilities
    The platform has limited functionalities when it comes to offline usage, which might pose a challenge for use cases requiring offline access.
  • Integration Complexity with Legacy Systems
    Integrating Liveblocks with older or legacy systems could present technical challenges and require additional development work.

No features have been listed yet.

Videos

Walkthroughs and reviews on video.

Liveblocks 1 video + Add
Underlayer 1 video + Add

Liveblocks & Livekit - Console DevTools Podcast S1E4

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
Liveblocks
Underlayer
100% 100%
Developer Tools
0% 0%
0% 0%
Education
100% 100%
100% 100%
Project Management
0% 0%
0% 0%
E-learning
100% 100%

Questions & Answers

As answered by people managing Liveblocks 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 Liveblocks 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.

Liveblocks 20 mentions
Underlayer 0 mentions
  • Multi-player Mode is Everywhere, Even in Dev Tools
    Of course, you don’t have to code this functionality from scratch! You can also look at open-source software like Yjs, text-crdt, Automerge and so many more. Alternatively, you can check out tools like Liveblocks, Ably, etc. Which enable... - Source: dev.to / almost 2 years ago
  • How to secure Liveblocks Rooms with Clerk in Next.js
    Liveblocks is a platform that enables developers to easily integrate collaborative features and custom real-time functionality within their applications. - Source: dev.to / almost 2 years ago
  • How to Build a Collaborative Editor with Next.js and Liveblocks
    // app/api/liveblocks-auth/route.ts Import { Liveblocks } from "@liveblocks/node"; Import { NextRequest } from "next/server"; Const liveblocks = new Liveblocks({ secret: process.env.LIVEBLOCKS_SECRET_KEY!, }); Export async function... - Source: dev.to / about 2 years ago

View more

Tracking Underlayer since Sep 2026.

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