Software Alternatives, Accelerators & Startups

Substack VS Liminary

Compare Substack VS Liminary and see what are their differences

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Substack logo Substack

With Substack, anyone can start a publication that combines a personal website, blog, and email newsletter or podcast. It's quick and simple.

Liminary logo Liminary

Stop losing the research that wins you clients. Save articles, PDFs, and videos from anywhere. Liminary recalls what you need, when you need it.
  • Substack Landing page
    Landing page //
    2022-10-26
  • Liminary
    Image date //
    2026-03-27
  • Liminary
    Image date //
    2026-03-27
  • Liminary
    Image date //
    2026-03-27

Liminary is an AI-native knowledge platform built for consultants, fractional strategists, and small professional services firms.

It captures content from anywhere you work โ€” articles, PDFs, YouTube videos, AI chat conversations, emails โ€” through a Chrome extension and web app. Instead of just storing what you save, Liminary's AI automatically surfaces the right knowledge when you need it, without you having to search. It synthesizes insights across everything you've collected, fact-checks claims against your sources, detects gaps in your research, and helps you create client deliverables grounded in what you actually know. Use Claude, Gemini, ChatGPT is the same brainstorming session all from one place in Liminary.

If you've ever lost a key stat you know you read somewhere, scrambled to pull together supporting evidence for a recommendation, or wasted hours re-finding research across scattered tabs and tools, Liminary solves that. Save anything.

Your knowledge finds you when you need it.

Substack

Platforms
-
Release Date
-
Startup details
Country
United States

Liminary

Platforms
Web Chrome
Release Date
2025 September
Startup details
Country
United States
State
Washington
City
Seattle
Founder(s)
Sarah Andrabi
Employees
1 - 9

Substack features and specs

  • Ease of Use
    Substack offers a user-friendly interface that makes it easy for writers to publish and monetize their newsletters.
  • Built-in Monetization
    Writers can easily charge readers for subscriptions, allowing for straightforward monetization.
  • Direct Audience Connection
    Substack allows writers to build a direct relationship with their audience via email, which can lead to a more engaged readership.
  • Discovery and Community
    Features like staff picks and recommendations help writers get discovered by new readers.
  • No Upfront Costs
    Substack does not charge upfront fees; instead, it takes a percentage of subscription revenues, making it easier to start.
  • Content Ownership
    Writers retain full ownership of their content, giving them more control over their work.

Possible disadvantages of Substack

  • Revenue Share
    Substack takes a 10% cut of subscription revenues, which can add up for writers with a large subscriber base.
  • Limited Customization
    The platform has limited customization options compared to building a custom website or using more flexible CMS options.
  • Dependency on Platform
    Relying on Substack means depending on its policies and infrastructure, which could pose risks if the platform changes its terms or features.
  • Competition
    As more writers join Substack, it can become challenging to stand out amidst the growing competition.
  • Email Deliverability
    Writers may face issues with email deliverability, as some newsletters may end up in spam folders.
  • Payment Processing Fees
    Besides Substack's fee, payment processors like Stripe also take a percentage, further reducing net earnings for writers.

Liminary features and specs

  • Save & Capture
    Save articles, PDFs, videos, podcasts, and AI chat conversations from anywhere with one click via Chrome extension or by uploading into the web app
  • AI Recall & Chat
    Ask questions across your entire saved knowledge base. 4x more accurate than ChatGPT + Google Drive, with full source citations
  • Fact Check & Gap Detection
    Checks outputs against your saved sources and flags gaps in your research before you deliver to clients
  • Cross-Source Synthesis
    AI connects insights across all your saved content, surfacing patterns you'd miss manually
  • Create & Produce
    Go from research to client deliverables inside the product. No copy-pasting between tools
  • Voice Interface
    Talk to your knowledge base hands-free for natural, fast interaction while multitasking
  • Web Search
    Blends real-time web results with your personal knowledge base for complete answers
  • Collaborate
    Shared knowledge bases and real-time collaboration for small teams
  • Auto-Organization
    AI-powered tagging, collections, and merging theme view that surfaces patterns across saved items

Analysis of Substack

Overall verdict

  • Substack is a good choice for writers seeking autonomy and a straightforward way to monetize their content. However, it may not be the best fit for those who prefer working within the framework of a larger publication or those unfamiliar with the challenges of building and maintaining a subscriber base.

Why this product is good

  • Substack is a platform that allows writers, journalists, and content creators to publish and monetize their newsletters. It is praised for its ease of use, built-in subscription system, and direct-to-consumer model which enables writers to retain control over their audience and content. The platform has attracted both independent writers and established journalists seeking the freedom to monetize their work without traditional media constraints.

Recommended for

  • Independent writers and journalists
  • Content creators looking to monetize their work
  • Individuals seeking a direct relationship with their audience
  • Those who appreciate simplicity in publishing

Analysis of Liminary

Overall verdict

  • Limited independently verifiable information is available about Liminary (liminary.io) at this time, so a confident quality assessment can't be provided.

Why this product is good

  • No substantial public reviews, ratings, or third-party coverage found to verify claims
  • Cannot confirm the company's track record, security practices, or customer support quality
  • Details about pricing, features, and long-term reliability are not clearly established
  • Recommend researching directly with the vendor, checking recent user reviews, and testing via a free trial or demo before committing

Recommended for

  • Users willing to do their own due diligence and test the product firsthand
  • Early adopters comfortable trying newer or lesser-known tools
  • Not recommended for mission-critical use without further verification of security, support, and reliability

Substack videos

Monetizing Podcasts and Newsletters - Chris Best of Substack and Jonathan Gill of Backtracks

More videos:

  • Review - E1016 Substack CEO Chris Best empowers writers via email newsletter platform, raised $15M from a16z
  • Review - Why EVERYONE should be on Substack | What it is, How it Works, $$$
  • Review - Beehiiv vs Substack (2024) - Which is Better?
  • Review - My Experience with SUBSTACK: An Honest Review of Substack

Liminary videos

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

Add video

Category Popularity

0-100% (relative to Substack and Liminary)
Blogging
100 100%
0% 0
Consulting
0 0%
100% 100
CMS
100 100%
0% 0
Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Substack and Liminary.

What makes your product unique?

Liminary's answer:

Liminary is the only tool that covers save, organize, recall, and create in one AI-native workflow. Most tools handle one piece: bookmark managers save links, note apps organize, AI chatbots generate. But none of them connect your actual saved research to what you produce. Liminary does. It ingests anything (articles, PDFs, videos, AI conversations), then proactively surfaces the right knowledge when you need it, without you searching. It also fact-checks your outputs against your sources and flags gaps in your research, something no other tool in this space does.

Why should a person choose your product over its competitors?

Liminary's answer:

If you use Feedly or similar tools to monitor industry trends, you can read but not synthesize or create from what you save. If you use Guru or Glean, you get knowledge retrieval for teams, but it's built for internal company knowledge, not the external research consultants gather for client work. If you use ChatGPT or Claude alone, you get generation but no access to your own saved research, which means hallucinations and no source citations. Liminary connects all of that: capture from anywhere, AI recall with 4x better accuracy than ChatGPT + Google Drive, and creation tools that let you go from research to deliverable without leaving the product.

How would you describe the primary audience of your product?

Liminary's answer:

Independent consultants, fractional strategists, and small professional services firms (1 to 5 people) who bill for their perspective. These are professionals who synthesize large volumes of research into client deliverables like strategy decks, positioning docs, market analyses, and recommendations. Their work depends on the quality and accuracy of the information they bring to the table.

Which are the primary technologies used for building your product?

Liminary's answer:

Liminary is built on an AI-native architecture using semantic ingestion that preserves meaning at sub-document granularity, a context detection engine that predicts what knowledge is relevant to your current work, and an MCP-ready infrastructure that allows integration with other AI tools and agents. Available as a Chrome extension and web app.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Substack and Liminary

Substack Reviews

25+ Medium Alternative Platforms for Publishing Articles
Substack offers writers of all experience levels the ability to write an email newsletter thatโ€™s profitable through subscriptions. Substack provides purpose-built web and newsletter publishing tools to enable writers to monetize their newsletters. It is a service often favoured by readers because itโ€™s a convenient all-in-one solution for writing a successful podcast that...
Source: forgefusion.io
10 Best Medium Alternatives for Reading and Publishing
What sะตts Substack apart is its sะตamlะตss intะตgration of contะตnt crะตation and subscription-basะตd monะตtization. Substackโ€™s usะตr-friะตndly intะตrfacะต, distribution tools, and support for various contะตnt formats make it a popular choice for indะตpะตndะตnt crะตators looking to connะตct dirะตctly with thะตir audiะตncะต and turn thะตir passion into a sustainablะต incomะต strะตam.
9 Best Medium Alternatives for Making Money With Your Writing in 2023
Substack and Medium differ primarily in their monetization methods. Medium pays creators based on reader engagement, while Substack enables writers to monetize directly through paid subscriptions to their newsletters. This business model allows Substack users to build a direct relationship with their readers via their email inboxes, whereas Medium interactions primarily...
11 Patreon Alternatives for Audience Monetization in 2023
Like a few of the other platforms weโ€™ve looked at, Substack takes a cut of your earnings rather than charging a 10% platform fee.
Source: www.uscreen.tv
Any good Mailchimp alternatives?
My question for you is, what is keeping you from making $31 per month from your list? Are you using any feature that Substack (free until you get paid) can't handle?

Liminary Reviews

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

Social recommendations and mentions

Based on our record, Substack seems to be more popular. It has been mentiond 101 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Substack mentions (101)

  • Ask HN: What are your favorite blogs not about AI?
    Https://substack.com/@yelluwcomedy. - Source: Hacker News / 3 days ago
  • Kids (With Phones) Are Alright
    Sure there was basically a cartel in social media. You saw coordinated censorship campaigns to ban the former president of the United States for example. But I wouldn't discount the amount of political interference there as well. The last administration admitted to flagging individual posts for the social media companies. But it's also true there is a lot of coordinated censorship even without state interference.... - Source: Hacker News / 12 days ago
  • Financing the AI boom: from cash flows to debt [pdf]
    Manhattan Project: $36B, 5 years โ–ซ Apollo Program: $257B, 14 years โ–ซ Interstate Highway System: $620B, 37 years โ–ซ AI data centers: $930B, 6 years and still accelerating From: https://substack.com/@rubendominguez/note/c-244929068. - Source: Hacker News / 8 days ago
  • SpaceX to buy Cursor AI coding agent operator Anysphere for $60B
    The thing is, even the center of the road academics who refrain from such comparisons are noting the similarity. The MAGA movement meets the traditional defining characteristics of fascio. We can be rigid and say that only Mussoliniโ€˜s political movement can be properly be called fascist. But if we call Hitler and the Nazis fascists as well, then we open the door to any movement that meets the criteria. And Trump... - Source: Hacker News / about 1 month ago
  • AMA: I'm Eric Ries (The Lean Startup) & Author of New Bestseller Incorruptible
    Yes, it's much different in other countries. See https://substack.com/@doks/p-198191751. - Source: Hacker News / about 1 month ago
View more

Liminary mentions (0)

We have not tracked any mentions of Liminary yet. Tracking of Liminary recommendations started around Mar 2026.

What are some alternatives?

When comparing Substack and Liminary, you can also consider the following products

Ghost - Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.

GetGuru - Get started for free with Guru, the powerful company wiki that cuts through chat noise to serve you the info you actually need to do your job.

Medium - Welcome to Medium, a place to read, write, and interact with the stories that matter most to you.

Feedly - The content you need to accelerate your research, marketing, and sales.

MailChimp - MailChimp is the best way to design, send, and share email newsletters.

alphasense - AlphaSense finds information on companies, data and themes from within millions of research documents in seconds, all with ONE simple search.