Software Alternatives, Accelerators & Startups

Insomnia REST VS Substack

Compare Insomnia REST VS Substack and see what are their differences

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Insomnia REST logo Insomnia REST

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a devโ€‘friendly UI, built-in automation, and an extensible plugin ecosystem.

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.
  • Insomnia REST Landing page
    Landing page //
    2023-10-05
  • Substack Landing page
    Landing page //
    2022-10-26

Substack

Pricing URL
-
$ Details
-
Startup details
Country
United States

Insomnia REST features and specs

  • User-Friendly Interface
    Insomnia REST features a clean and intuitive user interface that makes it easy to create, send, and manage API requests without a steep learning curve.
  • Support for Multiple Protocols
    In addition to REST, Insomnia supports GraphQL and gRPC, making it versatile for developers working with different API protocols.
  • Environment Management
    Insomnia allows you to create and manage multiple environments, making it easier to switch between staging, development, and production settings.
  • Custom Plugins and Themes
    Insomnia supports custom plugins and themes, allowing users to extend its functionality and personalize the interface to suit their workflow.
  • Collaboration Features
    With Insomnia Teams, users can collaborate and share API requests, environments, and other resources, enhancing team productivity.
  • Cross-Platform Availability
    Insomnia is available on multiple platforms, including Windows, macOS, and Linux, providing flexibility for users on different operating systems.

Possible disadvantages of Insomnia REST

  • Resource Heavy
    Some users have reported that Insomnia can be resource-intensive, leading to potential performance issues on lower-end machines.
  • Limited Free Features
    While Insomnia offers a free tier, some of the more advanced features, such as team collaboration and sync capabilities, require a paid subscription.
  • Steeper Learning Curve for Advanced Features
    Although the basic functionalities are user-friendly, mastering the more advanced features might require a steeper learning curve.
  • Dependency on Electron
    Since Insomnia is built on Electron, it might consume more memory and disk space compared to native applications.
  • Complex Plugin System
    While the plugin system is powerful, it can be complex and challenging for users who are not familiar with JavaScript and Node.js.

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.

Analysis of Insomnia REST

Overall verdict

  • Insomnia REST is an excellent choice for developers who need a robust and intuitive tool for API development and testing. Its comprehensive features and ease of use make it a competitive option alongside other popular API clients.

Why this product is good

  • Insomnia REST is widely regarded as a powerful tool due to its user-friendly interface, extensive plugin ecosystem, and support for multiple authentication protocols. It allows users to easily build, debug, and test RESTful APIs with features like environment variables, code generation, and response validation. Moreover, its compatibility with GraphQL and gRPC makes it versatile for modern development needs.

Recommended for

  • API Developers
  • Software Testers
  • Backend Engineers
  • Technical Leads
  • Anyone involved in RESTful API development and testing

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

Insomnia REST videos

3 Reasons to use Insomnia REST Client in your Exploratory API Testing

More videos:

  • Tutorial - Insomnia REST Client Tutorial

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

Category Popularity

0-100% (relative to Insomnia REST and Substack)
API Tools
100 100%
0% 0
Blogging
0 0%
100% 100
Developer Tools
100 100%
0% 0
CMS
0 0%
100% 100

User comments

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Reviews

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

Insomnia REST Reviews

Top 20 Open Source & Cloud Free Postman Alternatives (2024 Updated)
Product Introduction: Insomnia is a powerful open-source API client designed for simplicity and efficiency and works great as a postman alternative. It supports REST, GraphQL, and gRPC, making it versatile for various API types.
Source: medium.com
Best Postman Alternatives To Consider in 2025
It is a free, open-source platform that boasts a user-friendly interface and robust features like environment and collection management, code snippets, and test automation. Compared to Postman, Insomnia offers a lighter footprint and a more customizable workspace.
Postman Alternatives for API Testing and Monitoring
Insomnia is a user-friendly tool for API development and testing. Insomnia allows creating and sending HTTP and REST requests, like GET, POST, PUT, DELETE, and more. Users can view API responses, including status codes, headers, and body. This enables understanding how the application handles different response scenarios, for efficient debugging.
Top 10 HTTP Client and Web Debugging Proxy Tools (2023)
Insomnia REST is the best alternative for Postman. It has more than 350 open-source plugins, plus GraphQL built-in with multiple protocol support. Since GraphQL is an added value, you can fully automate the entire lifecycle of APIs, build and debug them efficiently and with ease.
15 Best Postman Alternatives for Automated API Testing [2022 Updated]
Insomnia by Kong enables you to deliver high-quality APIs through collaboration. This postman alternative also includes testing suites, which allow you to create functional tests and centralize APIs. With this platformโ€™s streamlined API client, sending GraphQL, REST, and SOAP requests are simple. Defining variables such as authentication credentials allows you to manage...
Source: testsigma.com

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?

Social recommendations and mentions

Insomnia REST might be a bit more popular than Substack. We know about 134 links to it since March 2021 and only 98 links to Substack. 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.

Insomnia REST mentions (134)

  • Postman's New Pricing Is a Trap; Here Are the Alternatives
    Apidog offers 4 users free with unlimited everything. Bruno has built a passionate community around privacy-first API testing. Insomnia continues to improve with strong multi-protocol support. - Source: dev.to / 4 months ago
  • The Ultimate Guide to Offline API Testing: 10 Tools That Work Without Internet
    Insomnia balances professional-grade features with strong offline capabilities. Its Scratch Pad and Local Vault features ensure sensitive data remains on your local machine while providing comprehensive protocol support. - Source: dev.to / 9 months ago
  • Postman which I thought worked locally on my computer, is down
    I ditched Postman for Insomnia (Open source) after Postman refused to adhere to customers to disable auto-updates for 6 years+. I checked on their GitHub issue tracker and it turns out, the solution was to upgrade to their "Enterprise plan". https://github.com/postmanlabs/postman-app-support/issues/6999#issuecomment-3424362009 So, I said fuck it and switched to a real, open source alternative, Insomnia, instead:... - Source: Hacker News / 9 months ago
  • How to Design a RESTful API with CRUD Operations
    Postman and Insomnia provide user-friendly interfaces for manual and automated API testing, while testing libraries like Jest, Mocha, and pytest support programmatic tests. - Source: dev.to / 10 months ago
  • Sending SMS Messages with PHP
    To send the message, youโ€™ll want an HTTP tooling client that makes it easy to send POST requests - Iโ€™ve opted for Kongโ€™s Insomnia but you could also use Postman or even a raw cURL request. - Source: dev.to / 11 months ago
View more

Substack mentions (98)

  • 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 / 19 days 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 / 25 days ago
  • Show HN: Playing with genomics foundation model tutorial/explainer article
    Hi folks, I got curious about how genomics foundation models work and wrote an article explaining how they are trained + can be used. Feel free to use the following as learning resources if you wish to jump into ML for comp bio stuff, it may help: - Code: https://github.com/dillondesilva/nt-promoter-region-classification - Article/Tutorial:... - Source: Hacker News / about 1 month ago
  • CBP Directive 3340-049B: Border Search of Electronic Devices
    The vast majority of people from the developed world have no problems going through any border in the developed world. Your experience is probably representative, but that's not what we're talking about. My understanding is that de facto you have no rights at all in China. The Americans take this sort of thing very seriously, which is why it's in the news and talked about. Some guy gets imprisoned for 37... - Source: Hacker News / about 1 month ago
  • GitHub โ€“ DOS 1.0: Transcription of Tim Paterson's DOS Printouts
    There was never a serious claim DOS copied CP/M code. The controversy was mostly about legality of reimplementation of the API, plus some pretty vague claims about copying the design: https://substack.com/@nemanjatrifunovic/note/p-178321556. - Source: Hacker News / 2 months ago
View more

What are some alternatives?

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

Postman - The Collaboration Platform for API Development

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

Hoppscotch - Open source API development ecosystem

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.

RapidAPI for Mac - Paw is a REST client for Mac.

Buttondown - Buttondown is the best way to start and run your newsletter