Top 12 Open-Source Alternatives to RESTer

Product categories

API API Design API Management API Tools APIs CLI Command Line Tools Configuration Management Debugging Developer Tools Monitoring Tools Proxy

Summary

The top open-source alternatives to RESTer are Postman, Insomnia REST, and cURL. 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
cURL Landing Page
3

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
FRequest Landing Page
4

FRequest

FRequest is a fast, lightweight and opensource Windows / MacOS desktop program to make HTTP(s)...
Pricing:
- Open Source
#API Tools #Developer Tools #APIs
Hoppscotch Landing Page
5

Hoppscotch

Open source API development ecosystem
Pricing:
- Open Source
- Freemium
- Free Trial
#Web App #Productivity #APIs 77 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
mitmproxy Landing Page
7

mitmproxy

mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.
Pricing:
- Open Source
#Developer Tools #Security #Software Development 81 social mentions
Proxyman.io Landing Page
8

Proxyman.io

Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
Pricing:
- Open Source
- $49.0 / Annually
#Developer Tools #Debugging #Proxy 24 social mentions
Flagsmith Landing Page
9

Flagsmith

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.
Pricing:
- Open Source
- Freemium
- Free Trial
#Feature Flags #Developer Tools #Configuration Management 13 social mentions
DreamFactory Landing Page
10

DreamFactory

DreamFactory is an API management platform used to generate, secure, document, and extend APIs.
Pricing:
- Open Source
- Freemium
- Free Trial
#API Tools #APIs #Monitoring Tools 1 social mentions
Kreya - GUI Client Landing Page
11

Kreya - GUI Client

Kreya is a GUI client for gRPC and REST APIs with innovative features for environments, authorizations and more.
Pricing:
- Open Source
#API Tools #APIs #Developer Tools 10 social mentions
Httper Landing Page
12

Httper

Test RESTful APIs on android
Pricing:
- Open Source
#API Tools #Developer Tools #APIs