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101Tool VS Postman

Compare 101Tool VS Postman and see what are their differences

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

101Tool logo 101Tool

Free, browser-based API Studio, PDF optimizer, JSON code generator, and developer conversion toolkit โ€” no signup or installation required.

Postman logo Postman

The Collaboration Platform for API Development
  • 101Tool
    Image date //
    2026-07-18
  • 101Tool
    Image date //
    2026-07-18
  • 101Tool
    Image date //
    2026-07-18
  • 101Tool
    Image date //
    2026-07-18

101Tool is a free, browser-based utility platform for developers and teams who want practical tools without installing an app or creating an account.

Its API Studio supports REST and GraphQL requests, multi-request tabs, Params, Auth, Headers, Body and Tests editing, response inspection, variable extraction, collection runs, Postman Collection and OpenAPI imports, local request history, WebSocket sessions, environment variables, and optional small-team workspace synchronization. Sensitive values can remain device-local.

The PDF Optimizer analyzes and optimizes PDF files in the browser with multiple compression levels while prioritizing readable output and local processing. The Code Generator converts JSON payloads into TypeScript interfaces, Go structs and Python Pydantic models. The Developer Toolkit includes number-base conversion, ASCII tools, color conversion, URL and Base64 encoding, text utilities and hexadecimal helpers.

101Tool offers Korean and English interfaces, responsive layouts, light and dark themes, and detailed technical guides for every major tool. Core utilities are available free of charge with no installation required.

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

101Tool

Website
101tool.net
Pricing URL
Official 101Tool Pricing
$ Details
free
Platforms
-
Release Date
2026 July
Startup details
Country
South Korea
Founder(s)
Jason Lee
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

101Tool features and specs

  • API Studio
    REST, GraphQL, WebSocket, collections, tests and environments
  • Local PDF Optimization
    Browser-based PDF analysis and multi-level optimization
  • JSON Code Generation
    TypeScript, Go and Python Pydantic output

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 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

101Tool videos

No 101Tool videos yet. You could help us improve this page by suggesting one.

Add video

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 101Tool and Postman)

101Tool

Postman

API Management
100 100%
API Management
0% 0
API Tools
0 0%
API Tools
100% 100
PDF Tools
100 100%
PDF Tools
0% 0
APIs
0 0%
APIs
100% 100

User comments

Share your experience with using 101Tool and Postman. 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 101Tool and Postman

101Tool Reviews

We have no reviews of 101Tool yet.
Be the first one to post

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.

101Tool mentions (0)

We have not tracked any mentions of 101Tool yet. Tracking of 101Tool recommendations started around Jul 2026.

Postman mentions (30)

View more

What are some alternatives?

When comparing 101Tool and Postman, you can also consider the following products

Smallpdf - PDF document management and conversion suite

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.

quicktype - Generate beautiful, typesafe code from data

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.

Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.

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

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