Top 11 Open-Source Alternatives to Testfully

Testfully

API Client and API monitoring.

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Pricing:

Freemium
Free Trial
$49.0 / Monthly
Official Pricing

Platforms:

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Product categories

API API Clients API Design API Management API Testing API Tools APIs Data Integration Developer APIs Developer Tools Productivity Web Service Automation

Summary

The top open-source alternatives to Testfully 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
#API Tools #Developer Tools #APIs 30 social mentions
Insomnia REST Landing Page
2

Insomnia REST

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.
Pricing:
- Open Source
#API #API Tools #Developer Tools 134 social mentions
Hoppscotch Landing Page
3

Hoppscotch

Open source API development ecosystem
Pricing:
- Open Source
- Freemium
- Free Trial
#Productivity #API Tools #Developer Tools 102 social mentions
Firecamp Landing Page
4

Firecamp

Firecamp is a modern client for Real-time, GraphQL, REST and other 15+ routine tech stacks and platforms.
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 5 social mentions
cURL Landing Page
5

cURL

cURL is a computer software project providing a library and command-line tool for transferring data...
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 128 social mentions
req Landing Page
6

req

A minimal yet powerful HTTP client/API testing tool.
Pricing:
- Open Source
#API Tools #Developer Tools #APIs
StopLight Landing Page
7

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 #API Tools #API Management 33 social mentions
swagger.io Landing Page
8

swagger.io

Swagger is an open source RESTapi Documentation Tool.
Pricing:
- Open Source
#API Tools #Data Integration #Web Service Automation 106 social mentions
recipeui.com
9

RecipeUI

Open source type-safe Postman alternative
Pricing:
- Open Source
#Productivity #Developer Tools #APIs 2 social mentions
usebruno.com
10

Bruno

Bruno is a Git-integrated, fully offline, and open-source API client
Pricing:
- Open Source
#API Tools #APIs #Developer APIs 1 social mentions
Tyk Landing Page
11

Tyk

Tyk is an open-source API gateway and API management platform.
Pricing:
- Open Source
#API Tools #API Management #Web Service Automation 14 social mentions