Top 12 Open-Source Alternatives to Thunder Client

Product categories

API API Design API Management API Tools APIs Blogging Blogging Platform Business Workflows CLI CMS Data Integration Developer Tools

Summary

The top open-source alternatives to Thunder Client are Postman, Insomnia REST, and Hoppscotch. 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
Hoppscotch Landing Page
3

Hoppscotch

Open source API development ecosystem
Pricing:
- Open Source
- Freemium
- Free Trial
#Web App #Productivity #APIs 77 social mentions
cURL Landing Page
4

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
Strapi Landing Page
5

Strapi

Strapi is the most advanced Node.
Pricing:
- Open Source
#CMS #Blogging #Blogging Platform 310 social mentions
StopLight Landing Page
6

StopLight

Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality in your API lifecycle, all with an easy, enjoyable developer experience.
Pricing:
- Open Source
- Freemium
- Free Trial
#API Tools #APIs #API 23 social mentions
Webhook.site Landing Page
7

Webhook.site

Instantly generate a free, unique URL and email address to test, inspect, and automate (with a visual workflow editor and scripts) incoming HTTP requests and emails.
Pricing:
- Open Source
- Freemium
- $14.0 / Monthly
#Developer Tools #APIs #Sales Workflow 68 social mentions
Step CI Landing Page
8

Step CI

API Testing and Monitoring made simple
Pricing:
- Open Source
#API #Developer Tool #Testing Tool 8 social mentions
Axe API Landing Page
9

Axe API

The next-generation Rest API framework.
Pricing:
- Open Source
#API Tools #APIs #Developer Tools
req Landing Page
10

req

A minimal yet powerful HTTP client/API testing tool.
Pricing:
- Open Source
#API Tools #APIs #Developer Tools
Restfox.dev Landing Page
11

R

Restfox.dev

Browser based HTTP client inspired by Insomnia and Postman
Pricing:
- Open Source
#Developer Tools #HTTP #API Tools 5 social mentions
Mockoon Landing Page
12

Mockoon

Mock servers in seconds
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 26 social mentions