Top 10 Open-Source Alternatives to Cloud Middleman

Cloud Middleman

The only web debugging proxy that runs in the cloud.

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Product categories

A/B Testing API API Clients API Testing API Tools APIs Debugging Developer Tools Proxy Security Software Development Testing

Summary

The top open-source alternatives to Cloud Middleman are Proxyman.io, HTTP Toolkit, and Sonar by Facebook. 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
- $49.0 / Annually
#Debugging #Developer Tools #Proxy 25 social mentions
HTTP Toolkit Landing Page
2

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
- €7.0 / Monthly (for a Pro subscription)
#Software Development #Development Tools #Security 26 social mentions
Sonar by Facebook Landing Page
3

Sonar by Facebook

Extensible mobile app debugging for iOS and Android
Pricing:
- Open Source
#Error Tracking #Visual Bug Reports #Exception Monitoring 17 social mentions
Flagsmith Landing Page
4

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
#A/B Testing #Configuration Management #Developer Tools 13 social mentions
httpbin(1) Landing Page
5

httpbin(1)

HTTP request and response service
Pricing:
- Open Source
#API Tools #Testing #Developer Tools 59 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 129 social mentions
HyperDX Landing Page
7

HyperDX

Fix bugs faster with affordable end-to-end webapp monitoring
Pricing:
- Open Source
#CMS #Monitoring Tools #Developer Tools 3 social mentions
mitmproxy Landing Page
8

mitmproxy

mitmproxy is an SSL-capable man-in-the-middle proxy for HTTP.
Pricing:
- Open Source
#Software Development #Security #Developer Tools 87 social mentions
YiLu Proxy Landing Page
9

YiLu Proxy

Yilu Socks5 Proxy - Best Proxy Service with 90M+ Rotating Residential And Mobile 4G/5G Proxies from Global 200 Countries!
Pricing:
- Open Source
- Paid
- $100.0 / Usage
#Proxy #Private Proxy #Proxy Server 139 social mentions
Postman Landing Page
10

Postman

The Collaboration Platform for API Development
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 30 social mentions