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Requestly VS Postmate Client

Compare Requestly VS Postmate Client and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

Requestly logo Requestly

A Powerfulย API Mockingย andย Testingย Tool

Postmate Client logo Postmate Client

Privacy-first API client for VS Code โ€” no login, no cloud sync, no telemetry.
  • Requestly Requestly
    Requestly //
    2025-02-12
  • Requestly Rest Client
    Rest Client //
    2025-02-12
  • Requestly HTTP Interceptor
    HTTP Interceptor //
    2025-02-12
  • Requestly API Mocking
    API Mocking //
    2025-02-12
  • Requestly Requestly
    Requestly //
    2025-02-12

Requestly is a modern and powerful companion for API Development and Testing. It is an open-source tool purpose-built to speed up and simplify API development workflow for developers and QAs. It is a combination of API Client and HTTP Interceptor that helps create and share API Contracts, testing APIs, and easily mock and integrate them into web and mobile apps.

  • 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.

Requestly

Website
requestly.com
Pricing URL
Official Requestly Pricing
$ Details
freemium
Platforms
Google Chrome Firefox Edge Safari Brave Opera Vivaldi Android Windows Linux Mac OSX MacOS
Release Date
2021 January
Startup details
Country
United States
State
California
City
San Francisco
Founder(s)
Sachin Jain, Sagar Soni, Sahil Gupta
Employees
20 - 49
Edit details

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

Requestly features and specs

  • Redirect URL
  • Block Network Requests
  • Modify Request & Response Header
  • Modify Response
  • Supercharge Selenium
  • Session Replay
  • Modify Query Params
  • Team Workspace
  • API Client
  • API Mocks
  • GraphQL Support
  • Zero Setup
  • Auto Capture Sessions
  • Network Logs
  • Console Logs

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

Analysis of Requestly

Overall verdict

  • Requestly is generally regarded as a good tool due to its comprehensive functionalities and ease of use. Its ability to seamlessly manage network requests makes it suitable for both beginners and experienced developers.

Why this product is good

  • Requestly is widely considered a valuable tool because it offers robust and flexible features for intercepting and modifying network requests. Developers and QA testers appreciate it for its ability to simulate and debug API calls efficiently. It is particularly useful for testing changes without altering the codebase and for working with web applications in development and production environments.

Recommended for

  • Developers looking to debug and test API endpoints.
  • Quality Assurance (QA) teams that require reliable testing tools for web applications.
  • Technical professionals who manage network traffic and need to modify or redirect requests effortlessly.
  • Anyone involved in web development who needs to simulate network conditions or test application behavior under different scenarios.

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.

Requestly videos

+ Add

Get Started with Requestly

More videos:

  • Demo - Session Replays by Requestly
  • Tutorial - Modify API Response using Requestly Chrome Extension
  • Tutorial - How to load local JS file in production sites for faster debugging (Map Local Tool)
  • Tutorial - Report Quality Bugs with Video, Network logs, Console logs & Environment details

Postmate Client videos

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

Add video

Category Popularity

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

Requestly

Postmate Client

Developer Tools
96 96%
Developer Tools
4% 4
API Tools
0 0%
API Tools
100% 100
Testing
100 100%
Testing
0% 0
APIs
100 100%
APIs
0% 0

Questions & Answers

As answered by people managing Requestly and Postmate Client.

Who are some of the biggest customers of your product?

Requestly's answer

  • Verizon
  • AT&T
  • Adobe
  • Salesforce
  • Telegraph
  • Intuit
  • Verizon

How would you describe the primary audience of your product?

Requestly's answer

Front-end developers, QAs, PMs, Digital Marketers

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 makes your product unique?

Requestly's answer

Requestly is an open-source API development and testing tool that combines the capabilities of an API Client and HTTP Interceptor, making it a better alternative to Postman + Charles Proxy. It simplifies API mocking, request modification, and debugging with an intuitive no-code interface, enabling developers and QAs to test APIs efficiently.

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.

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

Share your experience with using Requestly and Postmate Client. For example, how are they different and which one is better?
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Reviews

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

Requestly Reviews

Comparing Charles Proxy, Fiddler, Wireshark, and Requestly
On the pricing front, Requestly strikes a balance between affordability and functionality. It is an open-source tool, offering freemium to individual developers and affordable pricing plans for team collaboration. We have also clearly differentiated how Requestly differs from Wireshark and other web debugging tools like Proxyman, Modheader, and HTTP ToolKit separately.
Source: dev.to

Postmate Client Reviews

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

Social recommendations and mentions

Based on our record, Requestly seems to be more popular. It has been mentiond 35 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.

Requestly mentions (35)

  • Why You Need a Local-First API Client (With Hands-On Example)
    If you want to try a local-first workflow, you can start using Requestly here: https://requestly.com. - Source: dev.to / 8 months ago
  • How to use Cursor to Generate API Testcases in Requestly
    Thatโ€™s where automation changes the game. By pairing Cursor, an AI-powered coding assistant, with Requestly's local-first API testing and mocking platform, you can offload the grunt work of writing tests to AI while keeping execution secure and reproducible on your own system. In this article, weโ€™ll walk through how to set up Cursor with Requestly, generate test cases automatically, and run them end-to-end so that... - Source: dev.to / 8 months ago
  • These 20 Awesome API Clients Will Change How You Work with APIs
    Requestly is a versatile browser extension and web client used to intercept, mock, and debug APIs in real-timeโ€”perfect for frontend developers. - Source: dev.to / about 1 year ago
  • Best Tools for GraphQL Development in 2025
    Requestly is a powerful tool for modifying GraphQL responses, intercepting requests, and debugging API interactions. It allows developers to tweak request bodies, capture GraphQL traffic, and share sessions for easier debugging and collaboration. - Source: dev.to / over 1 year ago
  • How Not to Use AI in Software Development
    Learn more at https://requestly.com/. - Source: dev.to / over 1 year ago
View more

Postmate Client mentions (0)

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

What are some alternatives?

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

Postman - The Collaboration Platform for API Development

Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.

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

Hoppscotch - Open source API development ecosystem

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

ngrok - ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.

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