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tmux VS Underlayer

Compare tmux VS Underlayer and see what are their differences

tmux

tmux is a terminal multiplexer: it enables a number of terminals (or windows), each running a...

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?
ASocks
Clear, Fast & Unlimited. Residential & Mobile Proxies For Best Price. 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, tmux seems to be more popular. It has been mentioned 34 times since March 2021.

social mentions
34 vs 0
Terminal Tools popularity
100% vs 0%
alternatives listed
149 vs 2

Base details

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

tmux
Underlayer
Website github.com underlayerhq.com
Pricing
Open source
Freemium $149 / Monthly Official pricing
Company — Startup from the United Arab Emirates · 1 - 9 employees · 2026
Listed in
Terminal Tools Developer Tools SSH Remote PC Access +1
Education E-learning Education / E-Learning

About tmux and Underlayer

In their own words, as submitted to SaaSHub.

tmux
Underlayer

No description of tmux 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.

tmux 8 features
Underlayer 0 features
  • Session Management
    tmux allows users to manage multiple terminal sessions from a single window, making it easier to multitask and organize workflows.
  • Persistent Sessions
    Sessions in tmux can persist even after disconnecting from the host. You can detach from a session and reattach later without losing your work.
  • Window and Pane Splitting
    tmux supports splitting windows into multiple panes, allowing users to have different programs or terminal instances side-by-side within the same window.
  • Customization
    Highly customizable with support for configuring key bindings, status lines, color schemes, and more through a configuration file.
  • Scripting and Automation
    Provides extensive scripting capabilities which can be used to automate routine tasks and workflows.
  • Remote Use
    Particularly useful for remote work, as it can be used to manage sessions on remote servers efficiently over SSH.
  • Performance
    Relatively lightweight and performant, consuming minimal system resources.
  • Community and Documentation
    A large and active community providing extensive documentation, tutorials, and plugins to extend functionality.

Possible disadvantages

  • Learning Curve
    Can be difficult to learn and memorize all the commands and key bindings, especially for new users.
  • Configuration Complexity
    The configuration can be complex and might require significant effort to customize according to individual needs.
  • Compatibility
    Might have compatibility issues with certain terminal emulators or applications, requiring workarounds or special configurations.
  • Resource Limits
    While lightweight, extensive use with many windows and panes can still consume significant system resources, potentially impacting system performance.
  • Copy-Pasting
    Copy-pasting within tmux can be less straightforward compared to using a regular terminal, requiring specific key bindings and knowledge of tmux buffers.
  • Clipboard Integration
    Integration with the system clipboard can require additional configuration and might not work seamlessly out-of-the-box.
  • Frequent Updates
    Frequent updates and changes can sometimes introduce bugs or break existing configurations, requiring users to adapt and troubleshoot.

No features have been listed yet.

Analysis

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

tmux
Underlayer

Overall verdict

  • Yes, tmux is considered a valuable tool by many in the tech community. Its features make it particularly useful for developers, system administrators, and power users who work extensively within the command-line environment.

Why this product is good

  • Tmux is a highly regarded terminal multiplexer that allows users to manage multiple terminal sessions from a single window. It facilitates productive workflows by enabling users to switch between different programs easily, run multiple applications, and keep programs running in the background. Tmux also supports session persistence, which allows users to disconnect from a session and reconnect later without losing their work state. Additionally, it is highly customizable and can be tailored to meet specific user needs, enhancing efficiency and usability.

Recommended for

  • Developers
  • System Administrators
  • Power Users
  • Linux Enthusiasts
  • Anyone who works extensively in the terminal

No analysis of Underlayer yet.

Videos

Walkthroughs and reviews on video.

tmux 3 videos + Add
Underlayer 1 video + Add

How I Work: Tmux

More videos

  • - You need to know how to use TMUX
  • - Getting Started with tmux Part 1 - Overview and Features

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
tmux
Underlayer
100% 100%
Terminal Tools
0% 0%
0% 0%
Education
100% 100%
100% 100%
SSH
0% 0%
0% 0%
E-learning
100% 100%

Questions & Answers

As answered by people managing tmux 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 tmux 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.

tmux no reviews yet
Underlayer no reviews yet

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.

tmux 34 mentions
Underlayer 0 mentions
  • Herding AI Agents: A Weekend with Herdr, Tmux, and Remote Fleets
    Running multiple agents is easy on paper: open up a bunch of terminal windows, fire them up, and you're good to go. The challenge begins when you step away from your desk and wonder what they're up to. Sure, you could pay extra for... - Source: dev.to / 2 months ago
  • 5 CLI Tools I Use to Keep Terminal Workflows Less Annoying
    Tmux is still hard to beat when you need persistent terminal sessions, panes, and project workspaces. - Source: dev.to / 6 months ago
  • [2026-04] How I Currently Use Claude Code
    I display the macOS built-in Terminal.app in full screen and use tmux. I don't split tmux windows—instead, I switch between tabs (windows). I haven't (yet?) switched to Ghostty or iTerm2. - Source: dev.to / 6 months ago

View more

Tracking Underlayer since Sep 2026.

Alternatives to tmux and Underlayer

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

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