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Postmate Client VS Postman

Compare Postmate Client VS Postman and see what are their differences

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Contents:
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  4. ยป Alternatives

Postmate Client logo Postmate Client

Privacy-first API client for VS Code โ€” no login, no cloud sync, no telemetry.

Postman logo Postman

The Collaboration Platform for API Development
  • Postmate Client Postmate Client running inside VS Code โ€” request builder
    Postmate Client running inside VS Code โ€” request builder //
    2026-07-07
  • Postmate Client Compare JSON responses side by side
    Compare JSON responses side by side //
    2026-07-07
  • Postmate Client Collection Runner โ€” run entire suites with one click
    Collection Runner โ€” run entire suites with one click //
    2026-07-07
  • Postmate Client HTML test execution report
    HTML test execution report //
    2026-07-07

Postmate Client is a free, privacy-first API client that runs natively inside VS Code. Test REST, GraphQL, and WebSocket APIs without leaving your editor โ€” no account required, no cloud sync, no telemetry. All requests, environments, and data stay on your machine.

Every feature is included, free โ€” there is no paid tier:

  • REST, GraphQL, and WebSocket requests with variable autocomplete
  • Collections and environments with instant switching
  • Request chaining โ€” pass values from one response into the next request without scripts
  • Data-driven testing โ€” attach a CSV data table to your environment and run a request against every row, or re-run a single row from a dropdown inside the request panel
  • Compare API responses โ€” diff two responses or two environments side by side, with differences shown in clean JSONPath notation; run bulk comparisons across a full data table for staging-vs-prod regression checks
  • Tests and assertions โ€” write them as table rows (no code) or in JavaScript with a Monaco editor
  • Collection Runner with HTML reports
  • CLI (pmc) for CI/CD pipelines โ€” GitHub Actions, GitLab CI, Jenkins
  • mTLS / client certificate support โ€” certificates stay local, never uploaded
  • One-click import from Postman (v2.0/v2.1), Bruno, Swagger/OpenAPI, and cURL

Postmate Client was built by a solo developer after Postman was blocked at his organization over data privacy concerns. It is designed for developers and teams in security-conscious environments โ€” fintech, healthcare, enterprise โ€” where API payloads, tokens, and certificates must never leave the machine.

Install from the VS Code Marketplace and send your first request in under a minute.

  • Postman Landing page
    Landing page //
    2021-07-23

Postmate Client

Website
postmateclient.com
Pricing URL
Official Postmate Client Pricing
$ Details
free
Platforms
Windows Mac Linux
Release Date
2025 June
Startup details
Country
United States
State
TX
City
Austin
Founder(s)
Shyam Narayan Yadav
Employees
1 - 9
Edit details

Postman

Website
postman.com
Pricing URL
-
$ Details
Platforms
Windows Mac OSX Linux
Release Date
-
Startup details
Country
India
Edit details

Postmate Client features and specs

  • Protocols
    REST, GraphQL, and WebSocket
  • Runs in
    VS Code โ€” native extension, no separate app
  • Privacy-Focused
    100% local โ€” no login, no cloud sync, no telemetry
  • Data-Driven Testing
    Run a request against every row of a CSV data table, or re-run any single row
  • Response Comparison
    Diff two responses or environments in JSONPath notation; bulk compare across data tables
  • Collection Runner
    Run full suites with HTML reports
  • Tests & Assertions
    No-code table-based tests, or JavaScript
  • CLI
    pmc โ€” run collections in GitHub Actions, GitLab CI, Jenkins
  • Import/Export
    Import & export Postman format; import Bruno, Swagger/OpenAPI, cURL
  • mTLS Support
    Client certificate support โ€” certificates stay local
  • Pricing
    Free โ€” every feature included, no paid tier

Postman features and specs

  • User-Friendly Interface
    Postman features an intuitive and user-friendly interface that simplifies the process of constructing API requests and visualizing responses. This makes it accessible for both beginners and advanced users.
  • Collaboration
    Postman offers robust collaboration features, such as shared workspaces, collections, and real-time editing, enabling teams to work together more efficiently on API development.
  • Comprehensive Testing Tools
    Postman provides a suite of testing tools to create, automate, and manage test cases. It supports automated testing through its scripting environments, which ensure APIs perform as expected.
  • Extensive API Documentation
    Postman can automatically generate comprehensive API documentation, making it easier to maintain and share API specifications with stakeholders and other developers.
  • Mock Servers
    Postman allows users to create mock servers to simulate API responses. This is particularly useful for testing and development purposes when the actual API is not yet available.
  • Integration Capabilities
    Postman offers integrations with various CI/CD tools, version control systems, and other services like Jenkins, GitHub, and Slack, facilitating seamless integration into development workflows.

Possible disadvantages of Postman

  • Resource Intensive
    Postman can sometimes be resource-intensive, consuming substantial memory and CPU, which can impact the performance of your system, especially when dealing with large collections.
  • Steep Learning Curve for Advanced Features
    While Postman is generally user-friendly, some of its advanced features, like scripting and automation, can have a steep learning curve and might require additional effort to master.
  • Pricing
    Although Postman offers a free tier, many of its advanced features, such as enhanced collaboration tools and extended integrations, are locked behind paid plans, which may not be cost-effective for smaller teams or individual developers.
  • Dependency on Internet
    Some of Postman's features, particularly those related to collaboration and synchronization, require a stable internet connection, which can be a limitation in environments with poor connectivity.
  • Limited Native Support for Certain Protocols
    Postman primarily focuses on HTTP/HTTPS protocols and may offer limited or no native support for other protocols, which can be restricting for developers working with diverse sets of technologies.

Analysis of Postmate Client

Overall verdict

  • I don't have verified, up-to-date information about postmateclient.com specifically, so I can't confirm its legitimacy, quality, or safety. There are many similarly-named delivery/courier-related tools and it's easy to confuse legitimate services with unofficial or low-quality clones, so caution is warranted before trusting or paying for this service.

Why this product is good

  • No independently verified reviews, ratings, or reputable coverage were found for this specific site.
  • The name is similar to major brands (e.g., Postmates), which raises the possibility of confusion with unofficial third-party tools.
  • Without clear information on the company behind it, its security practices, or customer support quality, its reliability cannot be confirmed.
  • Domain age, ownership transparency, and user feedback (via trusted review platforms) should be checked before use.

Recommended for

  • Users who have already independently verified the site's legitimacy and ownership.
  • Not recommended for those seeking an official Postmates-affiliated tool without confirming authenticity.
  • Best avoided by users who need to enter sensitive personal or payment information without first confirming security certifications (SSL, privacy policy, business registration).
  • Suitable only for advanced users comfortable doing their own due diligence (checking WHOIS data, reviews on Trustpilot/BBB, etc.) before trusting the service.

Analysis of Postman

Overall verdict

  • Yes, Postman is widely regarded as a good tool for API development and testing. Its combination of powerful features and ease of use makes it a popular choice among developers.

Why this product is good

  • Postman is considered a top choice for API development due to its user-friendly interface, extensive features for testing, automation, and collaboration, and strong community support. It simplifies the process of creating, managing, and testing APIs, making it accessible for both beginners and experienced developers.

Recommended for

  • Developers working on API integration
  • QA engineers involved in testing APIs
  • Teams in need of collaborative API development
  • Developers looking to automate API testing
  • Individuals looking for a comprehensive API testing tool

Postmate Client videos

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

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Postman videos

+ Add

POST/CON 2018 workshop in review: Running Postman Collections

More videos:

  • Review - POST/CON 2018 workshop in review: Postman Collections
  • Tutorial - How to Share Postman Collections

Category Popularity

0-100% (relative to Postmate Client and Postman)

Postmate Client

Postman

API Tools
1 1%
API Tools
99% 99
Developer Tools
1 1%
Developer Tools
99% 99
APIs
0 0%
APIs
100% 100

Questions & Answers

As answered by people managing Postmate Client and Postman.

What makes your product unique?

Postmate Client's answer

Postmate Client combines three things no other API client does together:

  • Runs natively inside VS Code โ€” no separate app
  • 100% local โ€” no login, no cloud sync, no telemetry
  • Every feature free โ€” no paid tier

Two workflows stand out:

  • Data-driven testing โ€” attach a CSV data table to an environment and every row appears in a dropdown inside the request. Run all rows, or re-run a single failing row with one click.
  • Compare mode โ€” diff responses across two environments in JSONPath notation, even across an entire data table. Staging vs prod regression testing in one click.

Why should a person choose your product over its competitors?

Postmate Client's answer

Choose Postmate Client if your API data must stay on your machine.

  • vs Postman โ€” Postman (and its VS Code extension) requires an account and syncs to their cloud. Postmate Client has no account to sign into, because nothing leaves your disk.
  • vs Thunder Client โ€” adds full data-driven testing, response comparison, WebSocket support, and a CLI, all free.
  • No paywall anywhere โ€” collection runner, CI/CD CLI, and mTLS support are all included.

If you need shared cloud workspaces for a team, Postman is better at that โ€” Postmate Client is built for developers who want speed and privacy.

How would you describe the primary audience of your product?

Postmate Client's answer

Developers and QA engineers who test APIs while writing code and want their data to stay local โ€” especially in security-conscious environments (fintech, healthcare, enterprise) where cloud-based API tools are blocked or discouraged by security teams.

Also a natural fit for VS Code users tired of switching to a separate app for API testing.

What's the story behind your product?

Postmate Client's answer

Postmate Client was built by a solo developer after Postman was blocked at his organization over data privacy concerns โ€” API payloads and tokens syncing to a third-party cloud was an unacceptable risk.

The entire product philosophy stems from that day: no login, no cloud sync, no telemetry, everything stored locally. What started as a personal tool became a full API client for VS Code โ€” and it remains free, with every feature included.

Which are the primary technologies used for building your product?

Postmate Client's answer

  • TypeScript and the VS Code Extension API
  • Monaco Editor for scripting and diff views
  • Core logic ships as the @postmate/core npm package, which also powers the pmc CLI for CI/CD pipelines

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Postmate Client and Postman

Postmate Client Reviews

We have no reviews of Postmate Client yet.
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Postman Reviews

Postman vs Apidog: Choosing the Suitable API Development Tool
Forking Existing Collections: One of Postmanโ€™s unique strengths is the ability to fork collections created by others. Developers can easily duplicate publicly available Postman collections, modifying them to fit their particular needs without starting from scratch. This feature saves time and encourages collaboration by allowing developers to build upon existing work.
Source: dev.to
Top 20 Open Source & Cloud Free Postman Alternatives (2024 Updated)
As the digital landscape evolves, the significance of APIs (Application Programming Interfaces) has surged, facilitating seamless communication between various software applications. Postman has been a leading tool in this space, offering a comprehensive platform for API development, testing, and documentation. However, recent shifts in its pricing model and user experience...
Source: medium.com
Best Postman Alternatives To Consider in 2025
- Focus on specific needs: Does the tool excel at SOAP APIs or cater to microservices? - Resource usage: Does it handle complex projects without impacting system performance? - Script reusability: Does it allow for efficient code sharing across projects?3. Is Postman the best API tool?Not all-encompassing. While Postman is powerful, the "best" tool depends on your specific...
Source: www.hypertest.co
Postman Alternatives for API Testing and Monitoring
Some engineers turn to Postman for API testing and monitoring needs. However, Postman is a costly and limited solution. QA, DevOps and other engineers may find it lacks capabilities that can answer their needs. In this blog post, we provide 12 Postman alternatives built for the enterprise.
Source: www.blazemeter.com
Beeceptor vs Postman
You cannot download request log. Although, you can use Postman APIs to query and retrieve.
Source: beeceptor.com

Social recommendations and mentions

Based on our record, Postman seems to be more popular. It has been mentiond 30 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.

Postmate Client mentions (0)

We have not tracked any mentions of Postmate Client yet. Tracking of Postmate Client recommendations started around Jul 2026.

Postman mentions (30)

View more

What are some alternatives?

When comparing Postmate Client and Postman, you can also consider the following products

Thunder Client - Rest API client for VS Code, lightweight Postman alternative

DreamFactory - DreamFactory is an API management platform used to generate, secure, document, and extend APIs.

Bruno - Bruno is a Git-integrated, fully offline, and open-source API client

MuleSoft Anypoint Platform - Anypoint Platform is a unified, highly productive, hybrid integration platform that creates an application network of apps, data and devices with API-led connectivity.

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.

Apidog - All-in-One workspace for API Design, Documentation, Debug, Mock, Test

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