Top 12 Open-Source Alternatives to Postwoman

Product categories

API API Tools APIs Application Builder Automated Testing Browser Testing CLI CSS Code Analysis Developer Tools Productivity Website Testing

Summary

The top open-source alternatives to Postwoman are Postman, Insomnia REST, and Requester. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Postman Landing Page
1

Postman

The Collaboration Platform for API Development
Pricing:
- Open Source
#APIs #API Tools #Developer Tools 27 social mentions
Insomnia REST Landing Page
2

Insomnia REST

The most intuitive cross-platform REST API Client ð´
Pricing:
- Open Source
#API Tools #API #Developer Tools 120 social mentions
Requester Landing Page
3

Requester

HTTP client plugin for Sublime Text with an expansive feature set, modern UX, elegant syntax and...
Pricing:
- Open Source
#API Tools #Developer Tools #APIs
Selenium Landing Page
4

Selenium

Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily, it is for automating web applications for testing purposes, but is certainly not limited to just that.
Pricing:
- Open Source
#Testing #Browser Testing #Automated Testing 8 social mentions
Hoppscotch Landing Page
5

Hoppscotch

Open source API development ecosystem
Pricing:
- Open Source
- Freemium
- Free Trial
#Web App #Productivity #APIs 77 social mentions
Cypress.io Landing Page
6

Cypress.io

Slow, difficult and unreliable testing for anything that runs in a browser. Install Cypress in seconds and take the pain out of front-end testing.
Pricing:
- Open Source
#Automated Testing #Software Development #Browser Testing 26 social mentions
cURL Landing Page
7

cURL

cURL is a computer software project providing a library and command-line tool for transferring data...
Pricing:
- Open Source
#API Tools #APIs #Developer Tools 105 social mentions
Can I use Landing Page
8

Can I use

Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.
Pricing:
- Open Source
#Website Testing #Browser Testing #CSS 342 social mentions
Prettier Landing Page
9

Prettier

An opinionated code formatter
Pricing:
- Open Source
#Developer Tools #Code Analysis #JavaScript Framework 255 social mentions
Docker Landing Page
10

Docker

Docker is an open platform that enables developers and system administrators to create distributed applications.
Pricing:
- Open Source
#Developer Tools #Containers As A Service #Container Tools 62 social mentions
recipeui.com
11

RecipeUI

Open source type-safe Postman alternative
Pricing:
- Open Source
#Productivity #Regular Expressions #Developer Tools 2 social mentions
Step CI Landing Page
12

Step CI

API Testing and Monitoring made simple
Pricing:
- Open Source
#API #Developer Tool #Testing Tool 8 social mentions