Top 12 Open-Source Alternatives to Requestly

Requestly

A Powerful API Mocking and Testing Tool.

As Requestly is an open source project, you can find more open source alternatives and stats on LibHunt.

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Pricing:

Open Source
Freemium
Free Trial
Official Pricing

Platforms:

Google Chrome
Firefox
Edge
Safari
Brave
Opera
Vivaldi
Android
Windows
Linux
Mac OSX
MacOS

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Product categories

Developer Tools API Tools APIs Testing Localhost Tools Proxy API Clients Debugging Developer APIs HTTP Proxies Productivity Security

Summary

The top open-source alternatives to Requestly are Proxyman.io, Postman, 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.

Proxyman.io Landing Page
1

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 / Annually
#Debugging #Developer Tools #Proxy 27 social mentions
Postman Landing Page
2

Postman

The Collaboration Platform for API Development
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 30 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
ngrok Landing Page
4

ngrok

ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.
Pricing:
- Open Source
#Testing #Localhost Tools #Proxy 429 social mentions
HTTP Toolkit Landing Page
5

HTTP Toolkit

Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.
Pricing:
- Open Source
- Freemium
- €7 / Monthly (for a Pro subscription)
#Software Development #Development Tools #Security 30 social mentions
Insomnia REST Landing Page
6

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
mitmproxy Landing Page
7

mitmproxy

mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.
Pricing:
- Open Source
#Software Development #Security #Developer Tools 93 social mentions
Clobbr Landing Page
8

Clobbr

Easy API endpoint load testing without breaking the bank
Pricing:
- Open Source
#Productivity #API Tools #Load And Performance Testing
usebruno.com
9

Bruno

Bruno is a Git-integrated, fully offline, and open-source API client
Pricing:
- Open Source
#API Tools #APIs #Developer APIs 1 social mentions
Mockoon Landing Page
10

Mockoon

Mockoon is the easiest and quickest way to design and run mock REST APIs. No remote deployment, no account required, free and open-source.
Pricing:
- Open Source
- Paid
- Free Trial
- $15 / Monthly (5 API mocks synchronized accross your devices, 1 mock deployed)
#API Tools #Developer Tools #APIs 35 social mentions
tmate Landing Page
11

tmate

Tmate is a instant terminal sharing based on ssh.
Pricing:
- Open Source
#Communication #Testing #Developer Tools 19 social mentions
Expose Landing Page
12

Expose

A beautiful, open-source, tunneling service - written in PHP
Pricing:
- Open Source
#Testing #Localhost Tools #Tunnel 2 social mentions