Software Alternatives, Accelerators & Startups

Proxyman.io VS Postmate Client

Compare Proxyman.io VS Postmate Client and see what are their differences

Proxyman.io logo Proxyman.io

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

Postmate Client logo Postmate Client

Privacy-first API client for VS Code โ€” no login, no cloud sync, no telemetry.
  • Proxyman.io Landing page
    Landing page //
    2023-02-25

Modern and Delightful HTTP Debugging Proxy Proxyman is a native, high-performance macOS application, which enables developers to observe and manipulate HTTP/HTTPS requests.

  • 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.

Proxyman.io

$ Details
$49.0 / Annually
Platforms
Mac OSX
Release Date
-

Postmate Client

$ 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

Proxyman.io features and specs

  • User-Friendly Interface
    Proxyman.io provides an intuitive and easy-to-navigate user interface, making it accessible for both beginners and advanced users.
  • Cross-Platform Support
    It supports multiple platforms including macOS, Windows, and Linux, ensuring a broad range of users can utilize the tool.
  • Real-time Traffic Interception
    Proxyman.io offers real-time traffic interception and inspection, enabling users to debug and analyze traffic as it happens.
  • HTTPS Decryption
    The tool supports HTTPS decryption, allowing users to view encrypted traffic for more thorough analysis.
  • Customizable Filters
    Users can set up customizable filters to focus on specific types of traffic or protocols, enhancing productivity and efficiency.
  • Extensive Documentation
    Proxyman.io provides detailed documentation and tutorials, helping users to make the most of the software.
  • Active Community and Support
    The tool has an active community and responsive support team, providing assistance and updates regularly.

Possible disadvantages of Proxyman.io

  • Cost
    While Proxyman.io offers a free trial, the full version is paid, which might be a barrier for some users or smaller organizations.
  • Learning Curve
    Despite its user-friendly interface, new users might still experience a learning curve to fully utilize all features.
  • Resource Intensive
    The application can be resource-intensive, potentially slowing down the system when intercepting high volumes of traffic.
  • Limited Free Version
    The free version has limitations in terms of features and volume of traffic it can handle, which may necessitate purchasing the paid version for extensive use.
  • Occasional Bugs
    Like any software, it can have occasional bugs or performance issues, although these are generally addressed quickly by the development team.

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 Proxyman.io

Overall verdict

  • Proxyman.io is generally considered a good tool for developers in need of a robust and intuitive proxy tool. It provides essential features for network traffic analysis with a clean and modern interface.

Why this product is good

  • Proxyman.io is appreciated for its user-friendly interface and powerful features that make it an effective tool for web debugging. It supports a range of protocols including HTTP, HTTPS, and WebSocket, and offers functionalities such as breakpoints, request/response modification, and SSL proxying. Its integration with MacOS makes it a preferred choice for developers in that ecosystem.

Recommended for

  • Web developers
  • Mobile developers
  • Security researchers
  • Quality assurance engineers

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.

Category Popularity

0-100% (relative to Proxyman.io and Postmate Client)
Developer Tools
97 97%
3% 3
API Tools
0 0%
100% 100
Proxy
100 100%
0% 0
Security
100 100%
0% 0

Questions & Answers

As answered by people managing Proxyman.io and Postmate Client.

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

Share your experience with using Proxyman.io 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 Proxyman.io and Postmate Client

Proxyman.io Reviews

Top 10 HTTP Client and Web Debugging Proxy Tools (2023)
Proxyman just like Paw is a native macOS web debugging proxy application. This tool stands as an intermediary or a man-in-the-middle server. With its built-in macOS setup, you can capture, inspect and get around HTTP(s) traffic, request, and responses easily. What set Proxyman aside from Paw is the fact that it is more advance in functionalities.
12 HTTP Client and Web Debugging Proxy Tools
Similar to the above-mentioned Paw, Proxyman is a premium native macOS web debugging proxy application.
Source: geekflare.com
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, Proxyman.io seems to be more popular. It has been mentiond 27 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.

Proxyman.io mentions (27)

  • Charles Proxy
    I don't have elaborate needs and have used Charles for many years. A few years ago I switched to https://proxyman.com and found it easier to use. - Source: Hacker News / 7 months ago
  • Essential Mobile Testing Tools: A Developer's Complete Guide
    Network analysis tools like Charles Proxy and Proxyman provide essential debugging capabilities for mobile applications. These tools intercept and analyze all network traffic, enabling detailed inspection of API communications. - Source: dev.to / 9 months ago
  • Catching useful errors when parsing JSON fails in Swift
    Armed with this you could now investigate the raw JSON using HTTP proxying (I like to use ProxyMan for this), and/or talk to the back-end team, see if they've made some changes and are aware of the breakage in the contract between client and server. - Source: dev.to / almost 2 years ago
  • Show HN: Pฤkiki Proxy โ€“ An intercepting proxy for penetration pesting
    I previously used Proxyman [1] on iOS to the http requests send over TLS. It worked rather nicely. Proxyman in this case starts a VPN which handles all the traffic. It uses custom certificate to decrypt the messages. [1] https://proxyman.io/. - Source: Hacker News / over 2 years ago
  • A collection of useful Mac Apps
    Proxyman - Price: Free (optional paid plans available) Modern and intuitive HTTP/HTTPS debugging proxy app for macOS. Source: about 3 years 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 Proxyman.io and Postmate Client, you can also consider the following products

Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy

Postman - The Collaboration Platform for API Development

HTTP Toolkit - Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.

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

Fiddler - Fiddler is a debugging program for websites.

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